1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

89 f150 engine hesitation

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Mar 5, 2007 | 10:33 AM

f150pat

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89 f150 engine hesitation

my 89 4.9l hesitates around 30-35 mph& 55-65 ranges. lacks power on hills on highway(4spd. w/OD). also, when hot starting, almost stalls to surging idle, then levels. new EGR & position sensor, air filter & PCV, recent high pressure fuel pump, fuel filter. any suggestions?

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