1995 Ford F250 engine revving

1995 FORD F-250
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WEBCT2000
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Engine Mechanical problem
1995 Ford F250 V8 Four Wheel Drive Manual 80k miles

I call it ghost revving it revs high then low or just stays high .
The engine will RPM to 3000 when I depress the clutch.
The truck will easily do 40mph with no foot on the gas.
What is causing this ?
Oct 15, 2009 at 12:03 AM
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BIG_JAY
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I would start with an Idle air control motor (IAC). That is what controls your idle.
Oct 16, 2009 at 9:25 PM