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ECMlink Another Idle problem...

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Shooty

10+ Year Contributor
71
26
Jul 1, 2012
Rimouski, QC, Canada
Well, where to start...

I think I red every post containing idle problems and now I'm out of idea, again

I started with the basics, did a boost leak test. Fixed the leaks and now it holds 25 psi
I've adjusted the TPS within specifications, loosen the throttle cable, adjusted the throttle stopper so it doesn't stick.

Next, I've blocked the FIAV, without luck. I've also changed the isc motor witch helped even if the old one had no shorted coils in it

I've check the isc drivers in the ecu but they looked good


Here is what's happening... when the car is cold, it's quite alright. It idle not so bad and I can make some adjustements. When the car gets real hot, things get messy, it surge like never before.

If I'm cruising and leave it in neutral in a hill by exemple, it goes from 900 to 1500 and cycles up and down
Same happen if left at idle after a long run

I've linked a 40 minutes drive with before and after idle comparaison.
Let me know what you think

Thanks a lot, again!!
 

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