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Re: Fast idle on start up 240-260 1983

posted by  someone claiming to be abe crombie on  Mon Apr 27 17:39 CST 1998 [RELATED]

ICQ>

the sensor that is located nearest #1 intake runner porvides a varying resistance that goes up in ohms as temp gets colder. If it has a faulty connection the idle control unit will assume the high (infinite) resistance is a sign of really cold temp and it will run idle valve at maximum control opening and you will get 200rpm idle speed until connection improves at which time idle goes back to normal. Clean and tighten (push sides of connectors in connector housing closer together for tighter contact with male pins on sensor) and see if your trouble ends.





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