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-   -   Idle speed AND speedometer acting up at the same time... (http://forums.pelicanparts.com/porsche-911-technical-forum/61333-idle-speed-speedometer-acting-up-same-time.html)

LeeH 03-01-2002 11:28 AM
Idle speed AND speedometer acting up at the same time...
 
I was at a light about a mile from home when the idle on my stock '84 3.2 jumped to a steady 3000 rpm for about 5-10 seconds then it dropped back down. When I pulled into the garage it did the same thing, right to 3000 rpm. After a few seconds it dropped back down. I revved and waited, but couldn't duplicate this. Then, as I turned off the car, the speedometer jumped to indicate 40 mph and slowly dropped to zero as the engine died.

Any suggestions?

beepbeep 03-01-2002 11:31 AM
happends to me when voltage is really low...check your alternator!


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