Quote:
Originally Posted by cvriv.charles
LOL. That doesnt sound stable to me. Maybe you mean stable is in your car doesnt stall? I was under the impression that the idel is suppose to be a bit higher when cold and then drops to about 950 when warm. Not 500. 500 is barely running. Thats why the car is doing that. My car does that. Hate it. When your car is warm how smooth is the idle at 950rpm? If it isnt smooth humming away. I would check the ISV. Checking the ISV is very easy. Takes two seconds. When I clamped mine off I could not believe how much smoother the idle was. Theres also a diagnostic plug too. Where you can disable the ISV.
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When warm, the idle at 1000-1100 is perfect. No lapping, no movement, no threatening to stall, no indication that there's anything wrong. Even at 500rpm, there's no movement, it's just extremely low...no threat to stall other than running too low.
And I've bypassed the ISV electronically via the diagnostic port to set the idle higher. Can't change the idle on the late 944 without doing that. There's no immediate change when I jump the ports. Should there be?