Capital City G8
I am looking for help in trying to diagnose a idle surge. The chains were replaced because of a P0008. When I got the car back, I replaced the belt because it was slipping. The car has been running great for 3 weeks. Now I have a idle surge of about 200 rpms. When I start the car, it runs fine. I can do short hops with no issues. If I do a long drive such as going to work which is about 45 minutes. The rpms will be start to be erratic. If I rev the engine up to 1000rpms, it stays steady. What is also interesting is that if the engine is running normal at idle. The rpms will surge if I turn on the air conditioning. When I drive the car, the car drives with no problems. It is so far just an idle issue. Any suggestions will be appreciated. I attached a video of the gauge in engineering mode.