Weird IDLE, is this normal? [Archive] - Forum


View Full Version : Weird IDLE, is this normal?

07-14-2005, 10:14 PM
I have an 02 GAGT, 43k miles, and i have an APOC cold air intake, and the SLP Pro Flow Exhaust. Anyway's, tonight I noticed that when the car was idling, the engine was making a funny sound. It would maintain a normal sound, then the engine would like speed up, then slow back down, etc... I watched the RPMS the whole time, and it stayed at a constant 750. Is this normal? I'm not sure if the engine has always done this because I've never really listened to it. I don't have an SES light. What do you all think? Does your engine do that too?


07-15-2005, 07:15 AM
Could be the air conditioning compressor kicking in and out, it uses a good amout of power to run which is noticeable at idle. Turn the HVAC knob to OFF and see if it keeps doing it (turning the knob to off shuts down everything)