intermitant high idle
 

Any ideas on this one?

my 1987 normally idles at 900 quite happily, however it has now started to stick at 2000 rpms. if you lift the gas pedal it does drop back to 900. At first i though simply stuck linkages but ive checked out everything ( pedal feels exactly the same and in same possition when idle is 900).

should i re investigate the pedal again? or does any one have any ideas / similar probs.

i will also prey to the porsche gods and hopefully it will cure itself by morning!

seriously any help greatly appreciated.

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mike 87 coupe'

[This message has been edited by D911_MEE (edited 06-04-2001).]

[This message has been edited by D911_MEE (edited 06-04-2001).]

Have been doing some reaserch, the po had new throttle micro switch replaced in 1991 to solve similar prob.

As usual hanyes manual is a bit vauge, can any one explain what the function of this switch is?

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mike 87 coupe'