idle issue in my s13

[LB240driftr]

i have a 92 hatch with 95 s14 motor swap, 97 rebuilt head, aaaand a 5 spd conversion. now the problem is that the car runs great but at idle it runs higher than normal (like around 1500ish) but then drops to about 1k within 1-2 seconds and then all the suddon it starts dropping and rising repeatedly untill i give it gas again

-so far i tried replacing both coolant temp sensors, and i have the stock auto s13 ecu installed(thought this makes it idle higher but not fluctuate)

can anybody shed any light on my problem its frustrating as hell??

[buentellomma]

did u check for vacuum leaks? mafs checked?

[c-los13]

there are alo of things to check bro
as well as many threads on this too
like buentellomma said....check maf and vacuums also a basic tune up should help to get to the problem
wire plugs spark plugs, o2 sensor, all them lil things
GL
i had idle problems forever!!! removing my emissions was the best thing i ever did to my car!!!

[LB240driftr]

maf is checked out..vacuum is good(i think) but i know i could remove all egr shiz since its an s14 motor anyway
pretty sure it could use an o2 since it runs pretty damn rich
anyways thanks guys il try a few things and post here again