Mechanics

IDLE PROBLEM

1979 Porsche 911

Engine Performance problem
1979 Porsche 911 6 cyl Two Wheel Drive Manual 140.00 miles

I have 911 sc It starts an runs perfect, but after it warms up the idle wont go below 2000 rpm, its still fuel injected, vacum line are good and intact
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Shooter5454
September 7, 2010.




Check the aux air valve, it should be closed when engine is warmed up. Its controlled electrically and its designed to be a controlled air leak around the throttle plate. As the engine warms up it closes shut lowering the idle, or it could be a sticking throttle.

Cwporsche
Sep 9, 2010.


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