Quote:
Originally Posted by dlpalumbo
I've tried cleaning my ISV, but I still have idle problems. A new O2 sensor helped a lot, but the idle still bounces when I depress the clutch.
I took off ISV (again) and tried to rotate the valve. I didn't apply much pressure, but it seemed to be stuck. It was open about 1.5mm.
Is this normal??
Thanks,
Dan
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This may be unrelated but I had been recently having idle problems too. In my case the car would not hold an idle reliably with the isv connected. Even when it would idle it would hunt too much. I tried many things, cleaning the isv, swapping it out for a different unit, cleaning the DME connector pins thinking it could be resistance related and none of it worked. When the isv was disconected it would idle fine except when cold so in frustration I hooked up a bypass switch to the isv so I could control it from the cabin as needed. This got me by but I knew there must be a fix. A mechanic that I know who works on my neighbors Porsche's suggested that the throttle body/AFM was dirty and cleaning it would likely cure the problem. With some skepticism I let him do the work and it worked like a charm. It now idles just as it should with a rock steady idle whether the A/C is on or not. All this and I have a LWF and no harmonic dampener with serpentine alternator belt. So if this can get my car running right it may be worth a try. If you do it yourself it is free and only takes about an hour or less.