Idle Problem. Please Help

[pwpanas]

Originally Posted by SKILMATIC

...I would try changing the IACV first then if that doesnt solve the problem we can trouble shoot some more.

Is there an echo in here?

[suprra_girl]

we won't really know much until he does at least a diagnostic... it very well may be the isc but pulling codes is always a good first step

[pwpanas]

Originally Posted by suprra_girl

we won't really know much until he does at least a diagnostic... it very well may be the isc but pulling codes is always a good first step

Agreed...if your Supra's ecu has any codes, it's always a worthwhile exercise to go through them first. Although you didn't mention the check-engine light, please post any codes stored in your ecu and we'll help you make sense of them.

[panicos]

Originally Posted by SKILMATIC

I know you said it idles when it is warm at 500rpm but do you notice any flutering at all? Anything different? Is it at all slugish?

Its just kind of odd how the IACV works fine once you are warm but during cold start it doesnt seem to work.

Do you notice any wires loose? Did you have any electrical problems before? I would try changing the IACV first then if that doesnt solve the problem we can trouble shoot some more.

I had no problems with electrical in the past. No wires loose, as far as the diagnostics reads. The idle reading is stack to 125.

[panicos]

Originally Posted by SKILMATIC

It may be your IACV(idle air control valve), but is there a problem with idling once the car is warm?

When it gets warm the revs raise up to 1500. It starts cool with no revs and rises all the way up to 1500 when its realy hot.