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Old 05-07-2009, 05:36 PM
VAVet VAVet is offline
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Default Engine Surging and terrible MPG

I have a 1997 Ranger with the 4.0L V-6. Mileage is approximately 80K
The engine surges from about 800 RPM to 1500 RPM whenever I am parked/stopped. Additionally, the MPG is only about 12....

Could a bad idle air control valve be the problem?

Any suggestions would be greatly appreciated...
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Old 05-17-2009, 10:33 PM
Bill G Bill G is offline
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Check for a vacuum leak that what it sound like.
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