[mehlosTT]

Originally Posted by mh3kgt

this may be a little off topic, but i searched around a little bit and wasn't able to come up with a definate answer to this myself. So my question is...i have some idle surge in my 92 vr4 and i've already replaced the iac, ecu caps and still have the idle surge. On a cold start my car jumps up to 3k and holds then slowly drops, after putting it in gear the rpm's are fine, but after putting the clutch in to shift/into neutral my idle surges usually between 2-2.5k. Ok, so my question is that if i get the AEM EMS, will the idle control be able to fix my idle and make it steady, or will the surge still exist? I may have some vac leaks as i hear a hissing from near the intake mani. Gonna check that out tomorrow. I just wanted to know ahead of time so i can get all mechanical issues fixed before purchasing the EMS and it not solving my problem. Thanks in advance for any info.

The AEM ems system at over $2000 with all needed sensors is not the answer here...just correct the vacuum leaks and then see if it fixed the surge. The fact that she idles up when cold probably rules out any FAIV issues within the Throttle body. Moning cold starts should be about a 1600-2000 or so RPM idle till she is warmed up; i.e.coolant has reached near normal temps.
You might want to move your post to a new topic area, so not to highjack the original.