hey guys...i got my swap in and running.....FINALLY.....but the idle jumps from 500-2500....i checked for all possible vacuum leaks, and am going to replace the IAC tomorrow morning to see if it helps...other than that, can anyone shed some light on the situation?

TIA

 

check your idel screw near the tb, make sure its not all the way out (like mine)
check for vacuum leak, AGAIN
dont replace the IAC, try taking it out and clean it
check the fast idle make sure its not loose
it this dont fix the problem, your SOL

 

forgot to ask, when does this happen? when you start up the car or when its warmed up?

 

If it's a JDM swap on mine it was the IAC valve at the bottem of the throtle body mine did the same thing 700-3000rpm gets really annoying but the vlave off a GSR fixed it right up no idles at 690-725rpm all the time.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ludeR917 &raquo;</TD></TR><TR><TD CLASS="quote">forgot to ask, when does this happen? when you start up the car or when its warmed up?</TD></TR></TABLE>

almost always...it will idle ok at first cold start for like 30 seconds...then it will kick into the loping....it kinda sounds like i have some brutal cam in it...but thats not what im going for


THANKS TO EVERYONE FOR THEIR HELP!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jdmboostedlude &raquo;</TD></TR><TR><TD CLASS="quote">If it's a JDM swap on mine it was the IAC valve at the bottem of the throtle body mine did the same thing 700-3000rpm gets really annoying but the vlave off a GSR fixed it right up no idles at 690-725rpm all the time.</TD></TR></TABLE>

wouldnt that be the fast idle thermo valve, cus my engine is the jdm motor, and the IAC is on the front of the Intake Mani, behind the rail and injectors

thanks though...im gonna check it as soon as i get home from class...peace

 

also if your coolant is low and it has an air pocket in the iac then it will do the same thing. top that off before you go replacing it

David

 

SEARCH!...there are probably 25 posts about this

 

I have the same problem, it started out only when the car was cold. Now it revs all day. It ranges from 1k to 3k.

Im assuming its a vaccum leak. I have to fix it soon, its not nice in commute traffic, When I push in the clutch to ride 1st and second gear the car will accelerate then just stop and the car jolts.

 

FIXED...it was the Fast Idle Thermo Valve...took it off, and it was backed all the way out...so i screwed it in a little bit...and it worked fine....not to mention my idle screw was all the way out...so it would idle at like 3k....but thats all fixed.....


thanks to all who put in their two pennies