Hello. When I depress the clutch and my car is rolling, sometimes the revs will go down from 400 to 700 rpm for a second before going back up to a normal idle of 900rpm. If I rev the car up a little bit and we're still rolling (with my foot on the clutch) they will do the same thing once I stop touching the gas pedal. It's hard to explain online, but my mechanic says he drove it for a while and he never saw anything wrong. I personally don't think it's normal since I never drove a car that did this before. Sometimes it will do it, sometimes it wont. I got the IAC cleaned and nothing changed. Some people told me it could be a vaccum leak but the mechanic said nothing was wrong. It seems to be worse when the engine is partially warmed up ( when the temp gage is not half way yet ) and when it's raining outside, but it will do it (a bit less) in mostly any weather. Please help me since I'm affraid to drive that car.
Jun 24, 2010 at 10:37 PM