That high of an idle does not sound correct. I have seen where the air flow sensor will cause this. You should check between pins 1 and 2. There should be .9 dc volts when the engine is idling at 1,000 rpm.
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Benzmac:
Donnie Drummonds
1992 500E (very soon I hope

1981 280GE SWB
ASE CERTIFIED MASTER AUTO TECHNICIAN
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