Overfilled AC System: While low refrigerant can cause problems with your AC and engine surging, an overfilled system can cause the same problem. When this happens, it will place a significant load on the engine and can lead to surging. Replacing the belt often eliminates the surge, and ensures better AC operation.īad AC Cycling Switch: The AC cycling switch controls the compressor cycling pattern. This places significant strain on the engine and the AC system. If the belt is stretched or worn smooth, it can slip during operation. Low Refrigerant in the AC System: If your AC system is low on refrigerant, it will make the compressor cycle on more frequently, increasing the load on your engine.įailing AC Compressor: If your AC compressor is beginning to fail, this can also add to the surging problem.īad Belt: One often overlooked cause of a car surging with the AC on is actually a worn compressor belt. Common sources of carbon buildup include the IAC valve, the EGR valve, and the throttle body. When the additional load of your AC compressor is added, it causes the computer to miscalculate and increase idle speed too much. For instance, if the system is low on refrigerant, the compressor will kick on more often, causing the surging to increase in frequency (if not in intensity).Ĭarbon Buildup: A number of engine components are subject to carbon buildup over time, and this can place a significant load on the engine. The car’s computer essentially miscalculates the amount of power necessary, and ends up overshooting, leading to a surging engine.Īny problem with the AC system can also exacerbate this condition. If there is carbon buildup within any part of the system, including the idle air control valve, throttle body, or possibly even the EGR valve, it can cause surging. When the engine is put under a load by the AC system, the car’s computer automatically attempts to compensate for that by adjusting the idle. When your AC turns on, it puts a load on the engine (the engine is responsible for turning the compressor, which builds pressure in the system, which allows low-pressure, gaseous refrigerant to be turned into high-pressure liquid and used in your cooling system. Aftermarket remotes (RF Kits) can be installed to control the vehicle.First, understand that this problem isn’t tied to just one system – it’s a combination of different things. The module will manage the remote starter functions. In some cases, Stand Alone Remote Starter can also be combined with 3X Lock remote starter functionsĮVO-ALL installation on a Audi S8 2022 Push-to-Start. Aftermarket remotes (RF Kits) can be installed to control the vehicle. In some cases, Stand Alone Remote Starter can also be combined with 3X Lock remote starter functionsĮVO-ALL installation on a Audi A8 2022 Push-to-Start. In some cases, Stand Alone Remote Starter can also be combined with 3X Lock remote starter functionsĮVO-ALL installation on a Jeep Cherokee 2022 Push-to-Start. Ford Transit 150 2022 Std-Key-with-KeylessĮVO-ALL installation on a Ford Transit 150 2022 Std-Key-with-Keyless.
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