1999 Ford F-150 ENGINE STUDERS AT ABOUT 45 TO 55 MPH

1999 FORD F-150
175,000 MILES • V8 • 2WD • AUTOMATIC
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MANGLE
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ENGINE SEEMS TO IDLE FINE BUT IT STUDERS AT AROUND 45 TO 55 MPH SOMETIME. NOT ALWAYS BU SOMETIMES WHEN I ACCELERATE IT STUDERS. I CHANGE THE PLUGS,WIRES AND EGR VALVE. WHAT ELS COULD IT BE?
Nov 1, 2010 at 6:35 PM
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