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Old Mar 15, 2005 | 06:38 PM
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no volts at iac

hello let me start off this site is great my 300 started having a high idle 1500 rpm so i decided to check a few things no vac leaks no codes so i got out the multi meter and checked tps turned out good then checked iac but got nothing the motor tested good and red wiretested 12v but red and gry/white tested zero how do i repair this .
 
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Old Mar 15, 2005 | 09:20 PM
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The IAC could be bad. Remove the electrical plug from it. The engine RPM should drop and maybe stall out. If it doesn't, the IAC is bad or very dirty. You might try taking it apart and cleaning it.
 
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Old Mar 15, 2005 | 10:28 PM
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I don't know if you will get a reading or not. You may be able to put an old dwell meter on it and get a reading. I believe the voltage is pulsating.
 
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Old Mar 15, 2005 | 10:42 PM
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Franklin is correct (as always ), the voltage on the IAC is pulsating.
 
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Old Mar 16, 2005 | 02:25 AM
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Glad to know that. Now I have a use for my old dwell meter.
 
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