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Registered
Join Date: Mar 2002
Location: Manassas, VA
Posts: 57
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Low Idle at Start-up
My car (80SC) starts right away when cold. However, it idles at around 600 to 700 rpm and the alternator light stays on until I give the gas pedal a bump. The light goes off but the idle is still low. Recently, after the car is warmed up and I've driven for for a while, (say for 30 to 60 minutes)when I stop the idle goes up to 1400-1600 rpm.
I replaced my airbox (and pop-off) not too long ago, and didn't have this problem before. Could it be related? Does the idle have to be reset?
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07-14-2002, 07:54 AM
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Join Date: Mar 2002
Location: Manassas, VA
Posts: 57
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Anybody?
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07-15-2002, 07:19 AM
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verify all vacuum hoses/connections and make sure the pop-off valve is sealing like it should. we all seem to suffer from eratic idling, but 600-1600 is extreme to say the least.
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07-15-2002, 07:44 AM
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1977 Porsche 911 S 2.7 CIS 
