1998 Ford F150 Regular Cab Logo
Anonymous
Anonymous Posted on Feb 28, 2010
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1998 Ford F-150 4.2 V6 starts and idles fine ibut bogs when step

1998 Ford F-150 4.2 V6 starts and idles fine if you step on the gas to accelerate quickly it bogs down and backfires I have changed fuel filter, fuel pump, Fuel pressure regulator I have swapped every sensor from my 99 ford and still have same problem. The truck will get up to Highway speed but if I press the gas passed a certain point it bogs down. I am frustrated and ready toset fire to the truck. Help

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  • Anonymous Feb 28, 2010

    The only codes I get are for EGR system, so I swapped EGR solinoid and EGR Sensor I have checked every vacuum hose and like I said swapped the IAC, TPS, MAS and problem persists

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  • Posted on Jan 14, 2011
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I had a van do this same thing to a tee turned out to be a broken key pin in the harmonic balencer causing the timing to ****** replaced balencer and ran like a dream there is a crank sensor grid on the balencer when the key pin broke it trew the timing off

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  • Posted on Dec 02, 2010
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Sound like you have catalytic converter stopped up

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  • Posted on Feb 28, 2010
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Are you getting any codes have you checked mass air flow sensor

  • Anonymous Feb 28, 2010

    what about cam sensors?

    worth checking

  • Anonymous Feb 28, 2010

    sounds like timing is out

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1998 Ford F-150 V6 is hesitating and not starting sometimes and idling rough like a misfire.

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