93 F-150XL bogs down when pulling hills

Rover's picture
Posts: 4498
AG Points: 9250
Joined: 2007-12-15
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Why could my 93 F-150XL bog down while pulling hills? Runs better when engine and transmission is cooler or just started. Have replaced plugs, wires, cap, rotor button, fuel filter, water pump and fuel pump in gas tank.