High Idle
Tom,
Check the 12 volt plug on the AAR on the right (passenger) side of the engine. If it is not plugged in, the valve won't close properly and you will get a fast idle until there is enough heat from the block to cause the bi-metallic spring to unwind and close
the valve.
or
You might have had a bad plug(s) or wire(s) that had been compensated for by advancing the timing. Also, make sure that the vacuum retard (the one showing vacuum at idle) is plugged into the right (retard) side of the advance unit.
Good luck
Fred Cook
80 911SC Sunroof Coupe
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