i made a post on this before (oh and i did do a search); however, i thought i'd explain my situation again... after i drive my car (usually after i drive it fast) it fluctuates the idle from 500rpm to 1500rpm, when i let off the gas. it also occurs if it's in any gear and i push on the clutch (with no gas). any help appreciated! thanks in advance.

 

bump bump!

 

mine does this too....... does it stop when you come to a stop??? mine does i would also like some help!
bump!

 

sounds like my car. i did however THINK i found the solution. First things first. try borrowing an IACV (on back of manifold) from someone. if it stops that's ur prob most likely. if not. check the voltage readings on ur TPS. the range should be like .450 to 4.5v or near that (mine is way off... .520-4.67 i think). if that's the case. I'd try a new throttle body. the butterfly might be bent a lil, or u could have a bad TPS. I had this problem for MONTHS and it frustrated all hell outta me. I took it to the dealership. They told me the plate was bent. the guy used to race back in his days so he checked my trunk and found the old nitrous bottle holes (DOH!) so he told me it coulda backfired and bent the plate. I checked the throttle voltage later to find that it was off so that could definitely be the problem. my car doesn't do it as bad anymore it sorta went away so i'm too cheap to buy a throttlebody hehe. hope this helps.

EDIT: BTW... mine also used to happen after driving fast or being hard on the car (highway runs or sometimes stuck in traffic for hours )



[Modified by CivicRyda2k, 12:02 PM 10/20/2002]

 

thanks for taking some time!!


[Modified by gsR-T mode, 9:51 PM 10/20/2002]

 

no prob. ironically... tonite i was driving home, and i decided to do a lil boosting home on the highway. got to a light off the exit... bam... IACV CEL comes on and the car starts the jumpy idling lol. damn i need to get a new throttle body.

 

mine does it when i rev it and the rpm's fall back to idle... it fluctuates, but not as much as 1000 rpms! mine is like 3-400 rpm fluctuations, annoying and can't figure out what's wrong..