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Brake Pumping causing erractic idling 900 1995

posted by  Laozong on  Fri May 10 15:40 CST 2002
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last visit: Sat Mar 27 21:43 CST 2010
[RELATED]

940 Non-Turbo

Some weeks ago I posted on my car idling erractically, especially in the morning. RPM would go up to about 1500-2000 and then back down to 500. I've checked vacuum hoses including mount and I think they are okay.

Recently I discovered that the RPM move erractically also when I keep pumping the brake pedal. The RPM would drop and go up just like it did every morning. I think I am closer to finding the problem part but I like expert advice from this board before I go out and start changing parts, which may be unnecessary. I am suspecting the brake booster check valve or the vacuum hose, although I can't see any leak in the hose.

Please advice. I'm willing to try anything as long as it is not costly.

Thanks

Laozong






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New Brake Pumping causing erractic idling [900][1995]
posted by  Laozong  on Fri May 10 15:40 CST 2002 >


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