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Thread: short idle, no throttle response leading to stall

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Posts: 1-10 of 11
2011-05-11 17:49:57
short idle, no throttle response leading to stall
i just finished putting all the finishing touches on my t28 turbo setup last night by running the inter cooler piping. prior to yesterday i could start my 200sx up and it would run and idle fine (with the after market maf injectors and ecu).

today, i went to start it and it will start and idle strong for 10 seconds or so, then the idle will go up and down in speed and become unstable , then the car stalls. every time i start the car up now, it does this, also opening the throttle some has no response at all i could put the pedal to the floor and it does nothing the engine will stumble more if anything. i set my fpr to 35psi no change , i have no pipe leaks , and im running blow through.

any ideas?
2011-05-11 18:28:37
check maf conections
2011-05-11 18:41:12
Originally Posted by beto
check maf conections

tried that last night, reseated the maf connection and the ground, also throwing no maf code
2011-05-11 18:44:10
The two idle control valve wires didn't get swapped around by chance?
2011-05-11 19:41:39
Originally Posted by BenFenner
The two idle control valve wires didn't get swapped around by chance?

not that i know of, i haven't modified that part of the harness, and it was fine a few days ago, all i did differently was just put on my ic piping,

its throwin a p0335 code, crank pos sensor, i replaced that sensor last year so i think maybe ill check the harness, as ive cleared that code and it keeps throwing it?
2011-05-12 00:10:14
check your tps
2011-05-12 00:32:43
messed around with it some more, no longer throwing that p0335 cps code, still starts easy, fires up, idles then about 10 seconds later it begans having trouble idling and stalls , only aggravated by the throttle.

tps is plugged in, havent fooled with the harness for it at all, im assuming the tps is also good because it was working only a few days ago.

checked the manifold for intake leaks, no leaks,

dumbfounded atm
2011-05-12 02:37:33
You try swapping another ecu in instead??
2011-05-12 02:45:10
dont have another one, at least one i have programmed for the maf and injectors im using, im running 72lb injectors with a cobra maf, only other ecu i have is the oem ecu. havent tried it yet
2011-05-12 19:31:42
also its really rich smelling, i have no downpipe but i can really smell fuel like i can barely keep my head under the hood its so strong
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