engine stalls when air conditioner is turned on and engine is idling. i was also getting a service engine soon lamp on my dash. do i need to change out my a/c compressor?
Country: United StatesMake: gmcModel: Envoy SLEYear: 2002Engine: 4.2 vortex
Hello and thank you for trusting me with your question. My name is XXXXX XXXXX X will do my best to help you with your GMC problem.This is a common problem on the Envoy 4.2 engine. No need to replace the compressor. The problem is that the engine idle speed is dropping too low due to carbon buildup in the throttle body. Remove the air intake tube and resonator box in front of the throttle body on top of the engine. Then use carburetor cleaner spray to clean the throttle body (throttle blade and bore). This will allow more airflow at closed throttle and will prevent the engine from stalling. If you would like any additional information or have more questions please don’t hesitate to ask! Please remember to only rate my service when you are satisfied. IF you feel the need to rate "Poor Service" or "Bad Service", please stop and reply to me via the REPLY TO EXPERT button with the issue you have. I will be happy to continue further and do everything I can to provide you with the service you seek.I am not paid unless I get a rating of 3 to 5 Stars/Smiley Faces. If I have helped you with your question, please give me an appropriate rating so that I get credit for helping you.Thank you,David
is there any special liquid i need to use?
There are throttle body cleaner sprays that you can purchase. Plain carburetor cleaner spray works well and is likely cheaper. This is available at most parts stores and at walmart.
thank you very much. that solved the problem. now i just got to return the ac compressor.
You are very welcome. Please don't forget to rate my service to you.
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