idle issue in my s13 - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

LB240driftr · 01-05-2011, 01:19 PM

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 · 01-05-2011, 06:11 PM

did u check for vacuum leaks? mafs checked?

c-los13 · 01-05-2011, 06:23 PM

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 · 01-07-2011, 10:52 AM

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

01-05-2011, 01:19 PM	#1
LB240driftr Zilvia FREAK! Join Date: Jan 2008 Location: Long beach, ca Age: 36 Posts: 1,055 Trader Rating: (78) Feedback Score: 78 reviews	idle issue in my s13 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?? __________________ Drift $tyle

01-07-2011, 10:52 AM	#4
LB240driftr Zilvia FREAK! Join Date: Jan 2008 Location: Long beach, ca Age: 36 Posts: 1,055 Trader Rating: (78) Feedback Score: 78 reviews	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 __________________ Drift $tyle

01-05-2011, 06:11 PM	#2
buentellomma Zilvia Junkie Join Date: Mar 2010 Location: Goodyear AZ Age: 39 Posts: 480 Trader Rating: (6) Feedback Score: 6 reviews	did u check for vacuum leaks? mafs checked?

01-05-2011, 06:23 PM	#3
c-los13 Zilvia Junkie Join Date: Feb 2010 Location: Edinburg, Texas Age: 36 Posts: 446 Trader Rating: (0) Feedback Score: 0 reviews	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!!!