1998 Ford Expedition idle problem

1998 FORD EXPEDITION
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GOJAMG32
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Engine Performance problem
1998 Ford Expedition V8 Four Wheel Drive Automatic

Engine starts but won't stay idle, I depress gas pedal stay running let go turns off.
Jan 21, 2009 at 9:33 PM
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JACOBANDNICKOLAS
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Hi:
My first guess would be a throttle position sensor (TPS) or an idle air control valve (IAC). Is there a check engine light coming on for you? You may want to have the computer scanned for codes. Most nationally rcognized parts stores will do it for free. Try that and let me know what you find.

Joe
Jan 24, 2009 at 4:53 PM
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GOJAMG32
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[quote:2520a12d16="Jacobandnickolas"]Hi:
My first guess would be a throttle position sensor (TPS) or an idle air control valve (IAC). Is there a check engine light coming on for you? You may want to have the computer scanned for codes. Most nationally rcognized parts stores will do it for free. Try that and let me know what you find.

Joe[/quote:2520a12d16]
No their is no check engine lamp on. I have no air leaks. I have checked my codes and none show up.
Jan 24, 2009 at 6:02 PM
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