A mobile mechanic Greenwood service was needed for a Mitsubishi with serious tyre problems. CMM Automotive attended the vehicle in Greenwood and inspected the tyres after the owner experienced a flat tyre.
During the inspection, we found one tyre completely flat. More importantly, the remaining three tyres had very little tread left and required attention.
CMM Automotive inspecting a Mitsubishi with a flat tyre and badly worn tyres in Greenwood.
Checking the Mitsubishi Tyres
Tyres play an important role in braking, steering and vehicle stability. Low tread can significantly reduce grip, particularly on wet roads.
We inspected all four tyres rather than concentrating only on the flat tyre. The inspection showed that three tyres had reached an unsafe level of wear.
Driving with badly worn tyres can increase stopping distances and reduce the driver’s ability to maintain control in poor weather. A flat tyre can also suffer further damage if the vehicle continues to move.
We explained the tyre condition to the customer and recommended replacing the affected tyres before returning the Mitsubishi to normal road use.
Mobile Mechanic Assistance in Greenwood
A roadside problem can sometimes reveal other faults that require attention. Checking the vehicle carefully helps identify safety concerns that the driver may not have noticed.
If your vehicle develops a flat tyre or another problem that leaves you unable to continue driving safely, CMM Automotive can attend your location and assess the situation.
A mobile mechanic Wanneroo service was needed for a Subaru with a charging system problem. The owner had experienced battery problems, so CMM Automotive attended the vehicle in Wanneroo to find the cause.
A flat battery does not always mean the battery itself has failed. The alternator must recharge the battery while the engine runs and provide electrical power for the vehicle.
CMM Automotive testing a Subaru with an alternator charging problem in Wanneroo.
Diagnosing the Subaru Charging Problem
We tested the Subaru’s charging system and found that the alternator was not producing the correct charge.
When an alternator stops charging properly, the vehicle begins relying on power stored in the battery. Eventually, the battery voltage drops too low to operate the vehicle correctly. The engine may then stop or fail to restart.
Charging system testing helps determine whether the problem comes from the alternator, battery, wiring or another electrical component.
Mobile Mechanic Repairs in Wanneroo
Warning signs of an alternator problem can include a battery warning light, slow starting, dim lights or repeated flat batteries. Identifying the fault early can help prevent an unexpected breakdown.
CMM Automotive provides mobile mechanic services across Perth for charging system faults, starting problems, vehicle diagnostics and many common mechanical repairs.
Our mobile service allows us to inspect and diagnose your vehicle at your home, workplace or another suitable location.
If your vehicle repeatedly has a flat battery or you suspect the alternator is not charging correctly, we can test the charging system and identify the cause.
A mobile mechanic West Perth service was needed after a Mazda 3 developed a problem with its drive belt. CMM Automotive attended the vehicle and found that the fan belt had snapped.
A broken fan belt can quickly leave a vehicle stranded. Depending on the engine design, the belt may operate important components such as the alternator, water pump or air conditioning compressor.
CMM Automotive attending a Mazda 3 with a snapped fan belt in West Perth.
Finding the Snapped Fan Belt
We inspected the Mazda 3 and confirmed that the fan belt had broken. Before replacing a damaged belt, it is important to check the surrounding components and determine why the belt failed.
A worn belt can eventually crack and break. Problems with pulleys, tensioners or other belt-driven components can also cause premature belt failure.
Our inspection allowed us to assess the belt system and determine the repairs required to get the Mazda back on the road.
Mobile Mechanic Repairs in West Perth
A snapped fan belt can happen without much warning. Drivers may notice a battery warning light, unusual noises or changes in engine temperature shortly before the belt fails.
A mobile mechanic Marangaroo service was recently needed for a Toyota with a timing belt problem. CMM Automotive attended the vehicle to investigate the fault and determine what repairs the Toyota required.
Timing belts play an important role in keeping an engine running correctly. If a timing belt becomes worn, damaged or develops another problem, the engine may run poorly or stop completely. In some engines, a timing belt failure can also cause serious internal engine damage.
Diagnosing the Toyota Timing Belt Problem
Our inspection of the Toyota identified a problem associated with the timing belt system. We checked the affected components and assessed the condition of the system before discussing the repair with the customer.
Timing belt problems should never be ignored. Unusual engine noises, difficulty starting or changes in engine performance can sometimes indicate a problem that requires further investigation.
Finding the cause early can reduce the chance of a breakdown and may help prevent more expensive engine repairs.
CMM Automotive inspecting a Toyota with a timing belt problem in Marangaroo
Mobile Mechanic Repairs in Marangaroo
CMM Automotive provides mobile mechanic services across Perth for mechanical faults, vehicle diagnostics, starting problems and many common vehicle repairs.
Our mobile service allows us to inspect vehicles at the customer’s home, workplace or another suitable location.
If your Toyota develops an engine problem or you suspect a timing belt fault, arranging an inspection can help identify the cause before the problem becomes more serious.
A mobile mechanic Darchservice was recently required for a Kia that had developed a coolant leak. The owner had noticed coolant disappearing from the cooling system and needed the cause identified before the problem became more serious.
CMM Automotive attended the vehicle in Darch and inspected the cooling system. During our checks, we traced the coolant leak to the engine water pump.
CMM Automotive diagnosing a leaking water pump on a Kia in Darch.
Finding the Coolant Leak
A leaking water pump can gradually cause the engine coolant level to drop. Depending on the severity of the leak, the driver may notice coolant underneath the vehicle, a low coolant level or an increase in engine temperature.
On this Kia, inspection of the cooling system confirmed that coolant was escaping from the water pump area.
Finding the source of a coolant leak is important because continuing to drive with insufficient coolant can eventually cause the engine to overheat. Severe overheating can result in expensive engine damage.
Mobile Mechanic Repairs in Darch
After diagnosing the leaking water pump, we explained the problem and the repair options to the customer.
CMM Automotive provides mobile mechanic services across Perth for many mechanical problems, cooling system faults, starting issues and vehicle diagnostics.
If your vehicle is losing coolant, overheating or developing a mechanical problem, diagnosing the fault early can help prevent a small repair from becoming a much larger problem.
For professional mobile mechanic Darch assistance, contact CMM Automotive on 1800 888 990.
This Toyota Prado needed car air conditioning in Kingsley after the system started losing its cooling performance. CMM Automotive attended the vehicle in Kingsley to diagnose the problem.
We inspected the air conditioning system and carried out leak testing. Our testing traced the refrigerant loss to a leaking air conditioning condenser.
The condenser sits at the front of the vehicle and plays an important role in the air conditioning system. Its location also exposes it to dirt, stones, insects and other road debris. Over time, damage or corrosion can cause the condenser to develop a refrigerant leak.
Finding the leak allowed us to identify the correct repair before carrying out an aircon regas.
CMM Automotive diagnosing a leaking air conditioning condenser on a Toyota Prado during a mobile callout in Kingsley.
Leaking Air Conditioning Condenser
The condenser helps remove heat from the high-pressure refrigerant after it leaves the compressor. Air flowing through the condenser helps cool the refrigerant before it continues through the system.
A leaking condenser allows refrigerant to escape. As the refrigerant level falls, the air conditioner can gradually lose its ability to cool the cabin.
On this Toyota Prado, our testing confirmed that the condenser was the source of the refrigerant leak. We could then recommend the correct repair instead of simply adding more refrigerant.
Repairing the source of a leak first can help prevent repeated regassing and refrigerant loss.
We diagnose condenser leaks, compressor problems, leaking hoses, TX valve faults and many other air conditioning issues. We also test system pressures and cooling performance at the vehicle’s location.
If your vehicle’s air conditioner gradually stops cooling, a refrigerant leak may be the cause. Proper testing can locate the leak and identify the repair needed to restore reliable cooling.
This Toyota Corolla needed a car aircon repair in Warwick after the air conditioning system started losing refrigerant. CMM Automotive attended the vehicle in Warwick and carried out testing to find the source of the leak.
We inspected the air conditioning system and checked the hoses and connections for signs of refrigerant loss. Our testing traced the problem to a leaking low-pressure air conditioning hose.
A damaged or leaking hose can slowly release refrigerant from the system. As the refrigerant level drops, the air conditioner may struggle to produce cold air. Eventually, the system may stop cooling altogether.
Finding the leak allowed us to identify the correct repair before adding more refrigerant.
CMM Automotive diagnosing a leaking low-pressure air conditioning hose on a Toyota Corolla in Warwick.
Leaking Low-Pressure Aircon Hose
Air conditioning hoses carry refrigerant between the major components of the system. They must remain properly sealed while handling changes in pressure and temperature.
Age, vibration and general wear can eventually cause an aircon hose to leak. Leaks can also develop around hose crimps and connections.
On this Toyota Corolla, we identified the low-pressure hose as the source of the refrigerant loss. We could then repair the fault before servicing the system.
This approach helps prevent the vehicle from simply losing its refrigerant again after a regas.
We diagnose leaking hoses, compressors, TX valves, Schrader valves and many other air conditioning faults. We can also check system pressures and cooling performance at the vehicle’s location.
If your air conditioner gradually becomes warmer, the system may have developed a refrigerant leak. Finding the leak first can save repeated regassing and help restore reliable cooling.
This Suzuki neededcar air conditioning in Cannington after the system stopped cooling correctly. CMM Automotive attended the vehicle at the customer’s location to diagnose the fault.
We inspected the air conditioning system and carried out several tests. During the vacuum test, we found that the system would not hold vacuum correctly. This indicated a leak somewhere within the air conditioning system.
Further testing traced the leak to the air conditioning compressor. The compressor could not maintain the required vacuum, confirming that it had developed a leak.
Finding this fault was important before attempting to regas the system.
CMM Automotive diagnosing an air conditioning compressor leak on a Suzuki during a mobile callout in Cannington.
Air Conditioning Compressor Leak
The compressor plays a major role in circulating refrigerant through a vehicle’s air conditioning system. A leaking compressor can allow refrigerant to escape and eventually cause the air conditioner to stop cooling.
Vacuum testing can help identify whether an air conditioning system has a leak before adding refrigerant. If the system loses vacuum, we need to locate the cause before continuing with the service.
On this Suzuki, our testing identified the compressor as the source of the problem. This allowed us to recommend the correct repair instead of simply regassing a leaking system.
We diagnose compressor problems, refrigerant leaks, TX valve faults and electrical issues. We can also test system pressures and cooling performance at the vehicle’s location.
If your car air conditioner has stopped cooling, adding refrigerant may not solve the problem. Finding the cause of the refrigerant loss can prevent the system from quickly losing its charge again.
CMM Automotive provides mobile air conditioning diagnosis and repairs across the Perth metropolitan area.
This Kia needed acar aircon repair in Woodvale after the air conditioning system developed a refrigerant leak. CMM Automotive attended the vehicle at the customer’s location and started testing the system.
Our inspection found refrigerant leaking from the high-pressure Schrader valve. Schrader valves provide service access to the air conditioning system. Although they are small components, a leaking valve can eventually cause the system to lose enough refrigerant to affect cooling performance.
We checked the high-pressure service port closely and confirmed the leak around the Schrader valve. Finding the leak allowed us to repair the actual fault instead of simply adding more refrigerant.
CMM Automotive repairing a leaking high-pressure air conditioning Schrader valve on a Kia in Woodvale.
High-Pressure Schrader Valve Leak
A car air conditioning system relies on the correct refrigerant charge to cool the cabin efficiently. Even a small leak can gradually reduce that charge.
Schrader valves can develop leaks as seals age or deteriorate. Dirt or damage around the valve can also prevent it from sealing correctly.
On this Kia, we repaired the leaking high-pressure Schrader valve before servicing the air conditioning system. We then checked the system to make sure it operated correctly.
We diagnose refrigerant leaks, compressor faults, electrical problems and pressure-related issues at the vehicle’s location. We also check system pressures and cooling performance to help identify the cause of poor air conditioning.
If your vehicle’s air conditioner starts losing its cooling performance, a refrigerant leak may be the cause. Finding and repairing the leak first can prevent repeated regassing without fixing the underlying problem.
CMM Automotive provides convenient mobile car aircon diagnosis and repairs across the Perth metropolitan area.
This Mazda BT-50 needed a car air conditioning repair in Gwelup after the air conditioning system stopped cooling correctly CMM Automotive attended the vehicle at the customer’s location to diagnose the problem.
When testing the air conditioning system, we found extremely low pressure on the low side. This reading indicated a possible restriction in the refrigerant flow. We carried out further testing before replacing any components.
CMM Automotive diagnosing a Mazda BT-50 air conditioning fault during a mobile callout in Gwelup.
Faulty TX Valve Found
The testing eventually traced the problem to a faulty TX valve (thermal expansion valve). The TX valve controls the amount of refrigerant entering the evaporator. When the TX valve becomes restricted, the low-side pressure can drop significantly. The evaporator may then receive insufficient refrigerant to cool the vehicle properly
On this Mazda BT-50, the unusually low suction pressure was an important clue that helped identify the restriction.
After diagnosing the faulty TX valve, we carried out the correct repair instead of simply regassing the system and hoping the problem disappeared.
Mobile Car Air Conditioning Perth
CMM Automotive provides mobile car air conditioning Perth diagnostics and repairs throughout Gwelup and surrounding Perth suburbs. We can test air-conditioning pressures, vent temperatures and system operation at the vehicle’s location to help identify faults including TX valves, compressors, condensers, refrigerant leaks and electrical problems.
If your car air conditioner is not cooling properly, accurate diagnosis can help find the actual cause before adding unnecessary parts or refrigerant
If you’re searching forjump start my car Perth, a failed battery may not always be the original problem. CMM Automotive recently attended a Honda in Scarborough after the vehicle developed a battery and starting problem.
Honda Battery Failed in Scarborough
The Honda’s battery had failed and the vehicle could no longer start correctly. At first, it would have been easy to assume that the battery had simply reached the end of its service life.
However, checking why a battery has failed can be just as important as getting the vehicle started again.
CMM Automotive attended the Honda in Scarborough and inspected the battery and charging system. Our testing found that the alternator was producing too much charging voltage.
An alternator should maintain the vehicle’s electrical system within the correct voltage range. When an alternator overcharges, excessive voltage can damage the battery and other electrical components.
In this case, the overcharging alternator had contributed to the battery failure.
CMM Automotive attending a Honda in Scarborough after an overcharging alternator caused the vehicle’s battery to fail.
Checking the Charging System After a Jump Start
A mobile car jump start may get a vehicle running, but it does not necessarily fix the cause of the flat or failed battery.
Once an engine is running, we can check the alternator output and battery condition. This can reveal charging problems that may otherwise go unnoticed.
An alternator can fail in different ways. Some alternators stop charging completely, while others can produce excessive voltage. Both faults can eventually leave the vehicle with battery and starting problems.
Finding the charging fault can also prevent a replacement battery from suffering the same damage.
We come directly to homes, workplaces and other safe locations. We can test the battery and check the charging system before recommending the next step.
If your vehicle won’t start and you’re searching for someone to jump start my car in Perth, CMM Automotive can come to you and investigate why the problem occurred.
If you’re searching forjump start my car Perth, a battery failure can happen when you least expect it. CMM Automotive recently attended a Mazda in Perth after its battery failed while the owner was at the shops.
Mazda Would Not Start After Shopping
The Mazda had recently been serviced by a family member. However, the battery had not been tested during the service.
The owner drove to the shops without noticing any major starting problems. When it was time to leave, the Mazda would not start. The battery no longer had enough power to crank the engine correctly.
This situation shows why battery testing can be a useful part of routine vehicle servicing. A battery may continue starting a vehicle while its performance slowly declines. The owner may receive very little warning before it finally fails.
Age, heat and repeated starting can all affect battery performance. Short trips can also make it harder for a weak battery to recover its charge.
CMM Automotive providing mobile jump start assistance for a Mazda after its battery failed unexpectedly at the shops.
Mobile Jump Start and Battery Testing
CMM Automotive attended the Mazda at the shopping centre and inspected the battery. We then provided the mobile car jump start needed to get the vehicle running.
Battery testing helps determine whether a battery has simply lost its charge or has reached the end of its useful life. We can also check the charging system while the engine is running.
These checks can help prevent another unexpected starting problem.
If testing confirms that the battery has failed, CMM Automotive can also supply and fit a suitable replacement battery at the vehicle’s location.
Flat Battery Assistance Across Perth
A flat battery at the shops can quickly turn a simple trip into an inconvenient situation. Fortunately, you don’t always need to organise a tow truck or find someone with jumper leads.
If your vehicle won’t start and you’re searching for someone to jump start my car in Perth, CMM Automotive can come to you. We can test the battery, check the charging system and help get you moving again.
If you’re searching forjump start my car Perth, the battery may not always be the real cause of the problem. CMM Automotive recently attended a Ford in Wembley after the vehicle’s battery went flat and the engine would no longer start.
Ford With a Flat Battery in Wembley
The owner initially suspected that the Ford simply had a flat battery. However, a battery can lose its charge when the vehicle’s alternator stops working correctly.
The alternator supplies electrical power while the engine is running. It also keeps the battery charged during normal driving.
When an alternator stops charging, the vehicle begins relying on the power stored in the battery. Eventually, that stored power becomes too low to operate the vehicle correctly.
The first warning may be a battery light on the dashboard. Other signs can include dim lights, electrical problems or difficulty starting the engine.
CMM Automotive attending a Ford in Wembley after an alternator charging fault caused the vehicle’s battery to go flat.
Mobile Jump Start and Charging System Testing
CMM Automotive attended the Ford in Wembley to investigate the starting problem. We provided the mobile car jump start needed to get the engine running.
Once the Ford was running, we tested the charging system. Our testing showed that the alternator was no longer charging the battery correctly.
This explained why the battery had gone flat. Simply replacing or recharging the battery would not have fixed the underlying problem. The new or recharged battery would eventually lose its charge again.
Checking the charging system after a jump start can help identify this type of fault.
Need a Jump Start in Perth?
CMM Automotive provides mobile jump start services across Perth for vehicles with flat batteries and starting problems. We can come directly to your home, workplace or another safe location.
If your car won’t start and you’re searching for someone to jump start my car in Perth, CMM Automotive can help. We can test the battery and charging system to determine why your vehicle has failed to start.
If you need to jump start your car in Perth, a flat battery may not always mean the battery itself has failed. CMM Automotive recently attended a Nissan Pulsar in Yokine after the vehicle developed starting problems and the battery went flat.
Nissan Pulsar With a Flat Battery
The owner of the Nissan Pulsar found that the vehicle would no longer start correctly. A flat battery was the obvious first concern. CMM Automotive attended the vehicle to provide mobile assistance and investigate the cause.
During our initial inspection, we found a poor connection at one of the battery terminals. A battery terminal needs a clean and secure connection. This allows electrical current to flow correctly between the battery and the vehicle.
A loose, damaged or badly connected terminal can cause several problems. These may include slow cranking, intermittent starting, electrical problems or a battery that continually loses charge.
CMM Automotive attending a Nissan Pulsar in Yokine after a faulty battery terminal caused flat-battery and starting problems.
Finding the Cause Before Replacing the Battery
Rather than simply fitting another battery, we checked the battery connections and identified the faulty terminal.
CMM Automotive repaired the battery-terminal connection and then provided the mobile car jump start needed to get the Nissan Pulsar running again. We could then check the vehicle’s charging system and confirm that it was operating correctly.
This is an important part of diagnosing a flat battery. Replacing a battery without checking the connections and charging system could leave the owner with exactly the same starting problem later.
Mobile Jump Start Service Across Perth
If your vehicle has a flat battery, clicks when you turn the key or has intermittent starting problems, CMM Automotive can come directly to your location.
Our mobile jump start Perth service includes checking the battery and basic charging system to help identify why the vehicle has failed to start.
If you’re stranded and searching for someone to jump start my car in Perth, CMM Automotive provides convenient mobile assistance across Perth to help diagnose the problem and get your vehicle moving again.
If you’re searching for jump start my car Perth because your vehicle suddenly refuses to start, a weak or flat battery may be the cause. CMM Automotive recently attended a Ford Ranger in Padbury that was turning over very slowly but would not start.
CMM Automotive providing mobile jump start assistance for a Ford Ranger with a flat battery in Padbury.
Ford Ranger Cranking Slowly in Padbury
When the owner tried to start the Ford Ranger, the engine would still crank. However, it was turning over much slower than normal. After several attempts to start the vehicle, the engine eventually flooded and became even more difficult to start.
A battery does not have to be completely flat before it causes starting problems. A weak battery may still operate the lights, radio and other accessories. However, it may not provide enough power to crank the engine at the correct speed.
This is why slow engine cranking is often one of the first signs of a weak battery.
Mobile Jump Start and Battery Testing
CMM Automotive attended the Ford Ranger in Padbury and tested the battery before carrying out the mobile car jump start. With sufficient battery power available, we could crank the engine at the correct speed and get the Ranger running again.
Once the engine was running, we checked the battery and charging system. These checks help determine whether the battery has simply discharged or whether another problem has caused the vehicle to lose battery power.
Common causes can include an ageing battery, a charging-system fault, lights or accessories being left switched on, or a vehicle sitting unused for an extended period.
Need a Car Jump Start in Perth?
If your vehicle is cranking slowly, clicking when you turn the key or refusing to start, repeatedly trying to start it can make the situation worse.
CMM Automotive provides mobile jump start services across Perth. We come directly to homes, workplaces and other safe locations to diagnose starting and battery problems.
If you’re stuck with a flat battery and thinking, “I need someone to jump start my car in Perth”, CMM Automotive can test the battery and charging system and help get you moving again.
Mobile Car Air Conditioning Perth diagnosis involves much more than checking whether a vehicle needs an A/C regas. We recently inspected a Nissan in Hocking with an air conditioning system that was not operating correctly.
The Nissan had poor air conditioning performance, so CMM Automotive tested the system to find the cause. Our diagnosis identified afaulty TX valve, also known as a thermal expansion valve.
This small component plays an important role in controlling refrigerant flow through the air conditioning system.
Nissan Air Conditioning Not Cooling Properly
Poor cooling from the vents can have several possible causes.
Low refrigerant is one possibility. However, compressors, condensers, electrical components and TX valves can also cause poor A/C performance.
For this reason, we did not assume that the Nissan simply needed more refrigerant.
Testing the system allowed us to investigate how the air conditioning was operating. The results eventually led us to the faulty TX valve.
What Does an A/C TX Valve Do?
The TX valve controls the amount of refrigerant entering the evaporator.
It needs to regulate refrigerant flow as the operating conditions of the air conditioning system change. This helps the evaporator work efficiently and produce cold air through the vehicle’s vents.
If the TX valve stops working correctly, refrigerant flow can become restricted or poorly controlled.
The result can be poor cooling performance from the air conditioning system.
Symptoms of a Faulty TX Valve
A faulty TX valve can produce symptoms that may initially appear similar to other A/C problems.
The air from the vents may not become cold enough. Cooling performance may also vary under different driving conditions.
System pressures can also provide useful information during diagnosis.
However, poor cooling alone does not confirm that the TX valve has failed. The complete A/C system needs to be assessed before replacing components.
Simply adding refrigerant will not repair a faulty TX valve.
This is why CMM Automotive tests the air conditioning system before recommending repairs.
Several faults can produce similar symptoms from inside the vehicle. The driver may only notice that the vents are blowing warm or slightly cool air.
The cause could be very different under the bonnet or inside the A/C system.
Testing pressures and system performance helps us narrow down the possibilities. We can then identify the component responsible for the fault.
For this Nissan in Hocking, the diagnosis identified the TX valve as the problem.
Faulty Nissan A/C TX valve diagnosed by CMM Automotive in Hocking.
TX Valve Faults and Refrigerant Flow
The TX valve has an important job despite its relatively small size.
Too little refrigerant flow through the evaporator can reduce cooling performance. Incorrect refrigerant control can also affect how efficiently the system operates.
A correctly functioning TX valve responds to changing A/C conditions. A faulty valve may no longer regulate that flow properly.
Replacing refrigerant alone cannot correct this type of mechanical fault.
We can investigate systems that blow warm air, cool poorly or operate intermittently. Our testing can also help identify refrigerant leaks and component faults.
This Nissan in Hocking is a good example of why diagnosis should come before replacing parts or regassing the system.
The poor A/C performance was caused by a faulty TX valve. Finding the actual fault allowed the correct repair to be recommended.
If your vehicle’s air conditioning is not getting cold enough, it does not automatically mean it needs more gas.
CMM Automotive can inspect the system at your location and investigate what is causing the problem. Correct diagnosis can save time and help avoid unnecessary A/C repairs.
Mobile Car Air Conditioning Perthdiagnosis can sometimes involve finding an air conditioning leak that does not occur all the time. We recently inspected a Toyota from Morley with an unusual refrigerant leak.
The vehicle had a faulty air conditioning evaporator. However, the leak was not present every time we tested the system.
The evaporator would leak and then appear to seal itself again. The fault could reappear around two days later. This made the problem much more difficult to identify than a constant refrigerant leak.
Toyota Air Conditioning Losing Refrigerant
When a vehicle loses A/C refrigerant, the first step is to find where it is escaping.
A large, constant leak can sometimes be relatively straightforward to locate. An intermittent leak can be much harder.
During testing of this Toyota, the system did not always show the same result. At certain times the evaporator would leak. At other times it appeared to hold pressure correctly.
This meant a single test could easily miss the problem.
Intermittent Toyota A/C evaporator leak diagnosed by CMM Automotive in Morley.
Intermittent A/C Evaporator Leak
The air conditioning evaporator is located inside the vehicle’s HVAC system. Its position can make evaporator faults more challenging to diagnose than some engine bay leaks.
In this Toyota, the evaporator had developed an intermittent leak.
The unusual part was how the fault behaved. The evaporator could leak refrigerant and later appear to seal again.
Around two days later, the leak could return.
This type of fault demonstrates why air conditioning diagnosis sometimes requires more than one quick test.
Why Can an A/C Leak Be Difficult to Find?
Not every refrigerant leak behaves in the same way.
Temperature and system pressure can change while a vehicle is being driven or parked. Components also expand and contract as their temperature changes.
A small fault may therefore leak under certain conditions but appear sealed under others.
This can make an intermittent A/C leak difficult to locate.
A system might even pass a test at one point and show signs of leakage later. For this reason, previous symptoms and test results can provide valuable information.
Proper A/C Leak Detection Matters
Repeatedly adding refrigerant does not repair the source of a leak.
If refrigerant continues to disappear, further investigation is required.
This is particularly important when dealing with an intermittent fault.
In the case of this Toyota from Morley, the faulty evaporator explained the refrigerant loss. The intermittent nature of the leak explained why the fault was difficult to confirm.
Signs of a Leaking Car A/C Evaporator
A leaking evaporator may cause the air conditioning to gradually lose cooling performance.
The system may initially blow cold air after being serviced. Cooling performance can then become weaker as refrigerant escapes.
Eventually, the air from the vents may no longer feel cold.
An evaporator leak may also be difficult to see because the component sits inside the HVAC housing.
Proper testing is therefore important when an evaporator problem is suspected.
Mobile Car Air Conditioning Diagnosis in Perth
This Toyota from Morley is a good example of why refrigerant leaks are not always straightforward.
The evaporator did not leak continuously. It could leak, seal itself again and then show the fault approximately two days later.
A quick test performed while the evaporator was sealed could potentially miss the problem.
CMM Automotive providesmobile car air conditioning service in Perthfor many common and unusual A/C faults. We can test systems for leaks and investigate poor cooling performance.
If your vehicle keeps losing refrigerant after an A/C service, there may be a leak that needs further investigation.
Finding the actual cause is important before carrying out further repairs or adding more refrigerant.
Mobile Car Air Conditioning Perth services often involve finding refrigerant leaks before an air conditioning system can be correctly regassed. We recently attended a Hyundai in Balcatta with an air conditioning problem.
The vehicle’s A/C was not performing as it should. Before adding refrigerant, CMM Automotive inspected and tested the system. We needed to find out why the air conditioning had lost performance.
A vehicle that has lost refrigerant should be checked for leaks before being repeatedly regassed.
Some leaks can be very small and may take time to reduce the system’s performance. Other leaks can allow refrigerant to escape much faster.
Common leak areas can include hoses, seals, condensers and service valves. Compressors and other A/C components can also develop leaks.
Testing helps narrow down the cause.
Once we identified the leaking low-pressure Schrader valve on this Hyundai, we knew where the refrigerant was escaping.
Small A/C Parts Can Cause Big Problems
The Schrader valve is a small component compared with an A/C compressor or condenser. However, its job is still important.
If the valve does not seal correctly, the system cannot retain its refrigerant.
This Hyundai in Balcatta demonstrates why proper diagnosis matters. A relatively small leak can eventually cause the entire air conditioning system to perform poorly.
Replacing or repairing the leaking component first can help prevent the refrigerant from escaping again.
If your vehicle is no longer blowing cold air, the system may have lost refrigerant. However, finding out why it has lost refrigerant is an important part of the repair process.
Our mobile service allows us to inspect and test many air conditioning problems at your location.
This Hyundai in Balcatta had a leaking low-pressure Schrader valve. Correct testing allowed us to identify the source of the refrigerant loss.
If your vehicle’s A/C is losing its cooling performance, CMM Automotive can test the system and investigate the cause. Finding the fault first can provide a more effective repair than simply regassing the system again.
Mobile Car Air Conditioning Perth services often involve diagnosing faults that only appear under certain conditions. We recently attended a Range Rover in Padbury with an unusual air conditioning problem. The A/C would not start working straight away.
The owner explained that the air conditioning could take around 20 minutes before it started working. Once it began operating, the system could produce cold air. However, waiting 20 minutes for the A/C to start was a clear sign that something was wrong.
Range Rover A/C compressor fault diagnosed by CMM Automotive in Padbury.
Range Rover Air Conditioning Not Working
An air conditioning system that starts working after a long delay can have several possible causes. The problem may involve an electrical component, pressure issue, sensor or compressor fault.
For this reason, we needed to diagnose the system rather than assume it simply required more refrigerant.
CMM Automotive tested the Range Rover’s air conditioning system to determine why it would not operate correctly from startup.
The A/C compressor was not operating correctly when the system was first switched on. After approximately 20 minutes, it would eventually begin working.
This explained the unusual symptoms the owner had experienced.
The compressor is an important part of a vehicle’s air conditioning system. It circulates refrigerant through the system and allows the cooling process to take place.
When a compressor develops a fault, the symptoms can vary. Some compressors may stop working completely. Others can operate intermittently or take time before they begin working correctly.
In this Range Rover, the delayed operation was an important clue during our diagnosis.
Why Does Car Air Conditioning Work After 20 Minutes?
If your car’s air conditioning takes 10, 15 or 20 minutes before it becomes cold, the system needs further investigation.
It does not automatically mean the refrigerant level is low.
The problem could involve the compressor, an electrical control, a sensor or another A/C component. Proper testing helps determine which part of the system is responsible.
Simply adding refrigerant without finding the fault may not solve the problem.
Intermittent air conditioning faults can sometimes be harder to find than a system that has completely stopped working.
The technician may need to observe the system while the fault is occurring. Comparing its operation before and after the A/C begins working can provide useful information.
The owner’s description of the fault is also important.
In this case, knowing that the Range Rover consistently took around 20 minutes to produce cold air helped with the diagnosis. It gave us a clear symptom to investigate.
Not Every Air Conditioning Fault Needs a Regas
Many vehicle owners associate poor air conditioning performance with low refrigerant. However, there are many other reasons an A/C system may stop working correctly.
A compressor fault is one example.
Adding refrigerant cannot repair a compressor that is failing to operate correctly. This is why CMM Automotive recommends diagnosing the system before deciding what repair is required.
This Range Rover in Padbury is a good example of an intermittent air conditioning fault. The system could eventually produce cold air, but the long delay was not normal.
Testing identified the faulty A/C compressor as the cause of the problem.
If your vehicle’s air conditioning takes a long time to become cold, there may be more happening than low refrigerant. The same applies if the A/C works sometimes but not others.
Mobile Car Air Conditioning Perth services are not always about regassing a system that has stopped blowing cold air. Sometimes the problem is electrical, as we recently discovered with a Mitsubishi in Canning Vale.
The owner contacted CMM Automotive because the air conditioning was working intermittently. Sometimes it worked normally, while at other times it would not operate at all. This made the fault difficult to predict.
Mitsubishi Air Conditioning Not Working
When diagnosing an intermittent air conditioning problem, we should not automatically assume the refrigerant level is low.
A car air conditioning system relies on several electrical and mechanical components working together.A faulty switch, relay, sensor or wiring connection can stop the A/C system from working. Other components may still operate correctly.
During our inspection of this Mitsubishi in Canning Vale, we investigated why the air conditioning was working intermittently.
Mitsubishi air conditioning fault diagnosed by CMM Automotive in Canning Vale.
The dashboard air conditioning switch was developing an intermittent fault.
Sometimes the switch operated correctly and allowed the air conditioning system to function. At other times, it failed to send the required signal. As a result, the A/C system would not operate.
This explained why the owner had experienced such inconsistent behaviour.
Intermittent electrical faults can also make diagnosis more difficult. If the component happens to work while the vehicle is being inspected, the problem can easily appear to have disappeared.
That is why understanding the customer’s description of when and how the problem occurs can provide valuable information during car air conditioning fault diagnosis.
Not Every A/C Problem Needs a Regas
This Mitsubishi is also a good example of why an air conditioning system should be properly diagnosed before automatically adding refrigerant.
A regas would not have repaired the faulty dashboard switch.
The system needed the electrical control problem identified so the actual cause could be addressed.
At CMM Automotive, our Mobile Car Air Conditioning Perth service focuses on finding the reason an A/C system is not operating correctly before recommending repairs.
Depending on the symptoms, this can involve checking refrigerant levels and pressures, looking for leaks, measuring vent temperatures and inspecting the operation of electrical and mechanical components.
Intermittent Car Air Conditioning Problems
If your car’s air conditioning works one day but not the next, there are several possible causes.
Electrical switches and relays can develop worn internal contacts. Wiring connections can also become intermittent, while sensors and control components may occasionally provide incorrect signals.
Some faults may also appear after components become hot and then disappear again once the vehicle cools down.
For this reason, an intermittent A/C problem should not automatically be treated as a refrigerant issue.
Mobile Car Air Conditioning Service in Perth
Having the vehicle inspected while the fault is occurring can make intermittent problems easier to diagnose.
In the case of this Mitsubishi in Canning Vale, diagnosing the faulty dashboard air conditioning switch identified why the system would sometimes work and sometimes refuse to operate.
If your vehicle’s air conditioning is blowing warm air, operating intermittently or has stopped working completely, CMM Automotive can inspect the system and determine what is causing the problem.
Correct diagnosis can help avoid replacing unnecessary components or paying for an A/C regas that will not repair the actual fault.
