my idle surges from 1200 to 1500rpm when i start it up, (either when the motor is hot or cold) and im 98% sure its not a vacuum leak. what the hell else could it be? i drilled a idle air hole in my golden eagle intake mani, could that be the problem? before the car wouldnt idle unless there was a vacuum leak. and i noticed that there wasnt a hole on the mani to fit the idle hole on my inline4 tb. so after i did that, i plugged the vacuum leak that i left open before (so the motor wouldnt kill out) and now the idle surges....any ideas?

 

bump

 

ttt

 

just curious, are you running afc hack? I had a idle surge, and instead of running -40 at idle i tuned it to -33 to prevent the idle surge. It has something to do with the voltage to the map sensor I believe while running the hack

 

no afc hack...

 

ttt.

 

to check for vacuum leaks spray hoses and manifold w/ brake clean, if it starts to idle fine where ever you spray leak is there, also could be iac valve

 

mine does that when i start the car and let it warm up, but it only happens when i start the car for the first time in the morning. it idles fine after that all throughout the day. i always thought of it as normal.

 

when did this start? did if occur after some work was done or out of the blue?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Black-LS &raquo;</TD></TR><TR><TD CLASS="quote">when did this start? did if occur after some work was done or out of the blue?</TD></TR></TABLE>

right after i plugged the egr on the block...then it started to idle like that. but before i had a vacuum leak....so i plugged both at the same time. and it started to idle all gay.