Rough Idle. when car comes to a stop?

General engine questions/issues that aren't specific to the other categories
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Rough Idle. when car comes to a stop?

By strider2112
- Sat May 02, 2009 10:27 am #114461 Hello. Im having a problem with my EG.It runs great at start up. After its is warmed up It runs but when it idles its kinda rough. when i accelerate it runs fine but when i come to a stop and it has to idle it doest it Runs rough.Car doesnt leak and i have checked compression all cylinders are good compression.car doesnt overheat.But this lil idle problem is a bother.Dont know if its the map sensor. has anyone else ever had this problem?
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By OGJaper
- Sat May 02, 2009 4:20 pm #114492 I some what have this issue, but mine doesnt go low in RPM's it goes higher, from 800 to 1500 just constant revs every second or so when I am stopped, I took my intake off and checked the throttle body, cleaned it out and it ran better, but now its doing it again, on top of that my speed-o stops working every now and then and my low-beams will shut off at random too haha... my car is haunted :lol: anyways it doesnt throw CEL at me for what ever reason, just the SRS light is on :?

Without codes I'm not sure if I should just start with relays or sensors or just the gauge cluster in general (if its fried maybe this is a good reason to buy the JDM white faces :wink: )

By strider2112
- Sat May 02, 2009 8:30 pm #114531 My car doesnt post any codes. No check engine light at all. When its warming up it runs great. After its warmed up it has the idle problem when its stopped and setting there at idle.But when i push gas pedal it goes away, then when i stop it falls on its face again. Changed filter on firewall and in tank. Brand new Fuel rely Did compression check everything i could think of.I really would love to fix this.
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By Punksz6
- Sun May 03, 2009 1:52 am #114585 You could try and clean your IACV and what kind of motor do u have?? Cause if u have a z6 u could also check the Fast Idle Thermo Valve. There is a plate on the side of the FITV that u can take off and check and see if the screw thats in there is loose. Just try narrowing down vaccum lines,tps. Hopefully some of this helps. :)
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