When i come to a stop my idle will fluctuate between 800-1400 for about one minute then it will idle at 850 like its suppost to. I also just put a wideband in my car and everytime i let off the gas it spikes lean for a second then it goes back to being fine wtf could cause this? The car is a eg hatch with ls motor and has skunk2 manifold. also no cel's or mil's

 

stock ecu?

 

yep stock ecu i just threw the wideband on because i was bord

 

have you tried cleaning the iacv?

 

nah, i havent tried that yet ive tried just about everything else

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mmuller &raquo;</TD></TR><TR><TD CLASS="quote">have you tried cleaning the iacv?</TD></TR></TABLE>

 

Do you still have the stock O2 sensor in its original location and hooked up to the ECU?

Did you install the Skunk2 manifold and then this started to happen?

 

most likely the iacv... unscrew the cap on the top of it and screw down the plastic valve in there.. that should do it

 

clean it

 

A momentary enrichening followed by a lean spike is normal when letting off the throttle.

 

haha thanks in vtec i just now figured this out haha

 

What did you figure out? And what was funny about IN VTECs response?

 

well it seems like my idle screw backed it self out some so i screwed that back in and its fine. As far as in vtec's response i just realized the wideband is gonna read lean when u let off the gas as the injectors close now i feel stupid

 

haha i coulda told u that napier