1993 Ford Aerostar engine idle too fast

1993 FORD AEROSTAR
170,000 MILES • 6 CYL • 2WD • AUTOMATIC
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GLRBIRD
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  • 1 POST
engine idles at 2000 rpm, throtle body butterfly is closed and does not seem to have a vacuum leak. started when i had alternator replaced at local shop. they said it was a cracked hose from the air filter to the throtle body and taped it up but still idles fast.
Jan 27, 2010 at 4:11 AM
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DAVID07722
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  • 5 POSTS
First, you never, never tape a hose up, you replace it! As for your issue, it does sound like a vacuum leak. The best way to find one is look for the area that has a loud sucking sound or spray carb cleaner all around the engine while it is running, if the idle increase then that is where your vacuum leak is.
Jan 27, 2010 at 1:02 PM
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