car cuts off unless you hold the gas when engine is warm

[kpoage20]

I have a 1g gsx. When i cold start the car, it idles fine, then once the engine starts to warm up, it will cut off unless you hold the gas pedal down. I put a new iacv on the car, didnt seem to help. Car also has new plugs, and i swapped the injectors out for a known good set. Has anyone had this problem or could give some advice to what could cause this before i start throwing parts on it?

 

[steve]

So your car won't idle when warm.

You replaced the ISC but does it move like it's designed to when you power up the ECU?

[ame]http://www.youtube.com/watch?v=l7R3gf7SiAo[/ame]
[ame=http://www.youtube.com/watch?v=KibYz21IMA0]DSM ISC motor testing & Replacement - YouTube[/ame]

The ECU won't control the idle speed if it doesn't see that the throttle is closed. Make sure the IPS is grounding the signal.
Do you have the right year ECU for your car? The IPS signal moved in the harness between 90 and 91.

If the rest works perhaps it's as simple and adjusting your BISS.

 

[kpoage20]

Thanks for your reply, i will check to see if the iac moves like it should when the car is powered on.

 

[d1978]

any updates on this thread?