951 idle fluctuation on cold start only
#1
951 idle fluctuation on cold start only
My 88 951 idle fluctuates only on cold start. Once warm it's perfect! Have set TPS and idle.
Any things to look at first? ICV? If I pull that out (manifold off) I will want to replace it with a known working one or brand new. 951 parts are not cheap or easily avail when I am so don't want to just start swapping parts!
Any things to look at first? ICV? If I pull that out (manifold off) I will want to replace it with a known working one or brand new. 951 parts are not cheap or easily avail when I am so don't want to just start swapping parts!
#3
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Maybe an old plasticized O-ring providing occasional sealing between the throttle body and intake manifold.
https://rennlist.com/forums/944-turb...-idle-2-a.html
Laust
https://rennlist.com/forums/944-turb...-idle-2-a.html
Laust
#7
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Join Date: Apr 2011
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I also had a similar problem. It turned out to be the temperature sensor. the one at the front of the head. I was give erratic readings until the engine got warm.
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#8
This one? DME sensor? Will try unplugging it on cold start, did you test yours or just replace? Will test mine when my PS lines are fixed and back on the car.
#9
I would just replace it for $20 from your local parts store.