Been having a small idle issue that I cannot figure out. This video was a cold start and a few little revs to show what is happening during cold idle. The rpm's drop then the car doesn't sound rite, like it has cams or no exhaust or something. Once the car is completely warmed up the idle seems a little bit low. It occasionally happens on warm starts also, however the idle gets much lower like it wants to stall out before returning to normal. Stepping on the clutch when coming to a stop gets quite bothersome as the car almost stalls. Sometimes its fine, just inconsistent and annoying. No problems at all with WOT. Anyone have any ideas what may be causing this to happen?


http://www.youtube.com/watch?v=SQcZwoqD-cQ

 

Maybe it's the tune? I have had the same tune for 2 years and had no problems. I think I need to get it checked out. This idle issue just started happening one day when I turned on my car.

 

other things I think it could be possibly are IAC, EGR, or bad maf sensor. I'm not realy sure how to tell if any of these are the problem. I just checked EGR and all hoses are conncected.

 

it could b the IAC

 

take the IAC out and clean it. I had a similar problem when I bypassed the coolant hoses for the throttle body, and somehow a droplet of coolant made it to the opening of the IAC

 

seems normal to me.. how does it idle after the car warms up?

also what do you guys mean by IAC?

 

Idle Air Controller on the throttle body, bottom right

 

Thanks guys. I'll take out the IAC tomorrow and clean it. It does the same thing when the car is warmed up but gets alot closer to stalling when i rev it.

 

Have an ac delete on this car?

 

^ Nope, AC is still there. everything is stock including the turbo, my only mods are the one's in my sig.

 

try adjusting your idle with evoscan.
easy to do and worth a try.
peter

 

mine iddles that high when first started in the morning or a cold engine. that looks just normal on mine LOL, that might be the reason why I get ****ty gas milage.

 

It's not idling too high. does your idle go from 1600 rpm to 1000 rpm then back again?

 

Have you done a boost leak test?

 

IMO it could be the cold weather..i am near pittsburgh and my car started doing the same thing when the weather broke cold...im goin to wait till it warms up a bit before i take it to Nate at TPG. once my car warms up its fine but that first 5 min or so does what urs it doing.