Question about 1998 Ford F150 Regular Cab

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Engine cuts out or bogs down when accelerating

1998 Ford F150, Triton 4.6L V8. Whenever I'm accelerating, it starts cutting out, engine light start flashing, and it ever backfired a couple of times which I didn't think could happen on a fuel injected engine. It is getting worse daily and has even started to idle rough. I guessing that it might need fuel filters replaced, if you agree can you tell me where they are located. I used to be a fairly good shade tree mechanic but with the change to fuel injection, electronic ignition, and computers I'm lost. It seems to smooth out once I get up to speed and stop giving it the gas.

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  • Joe C
    Joe C Jan 21, 2009

    I've replaced the fuel filter on the driver's side of the truck underneath in the frame rail, about the size of a can of soda. Is there another fuel filter? I did have to get a special tool. Also changed air filter and added injector cleaner. The problem has improved a little, I guessing it will take sometime to clean the injectors. If it hasn't improved in 2 weeks when I get paid again. I try changing the plugs. Thanks for the help shelby7

  • Anonymous Mar 23, 2009

    When i crank my truck it idles rough.For some reason when i let off the gas it smothers down and dies.Can you help? 1999 F 150 Triton v8

  • Tom Maul Feb 27, 2013

    I just bought a 1999 F-150 4.6 liter and it started rummig rough cut out after drivingin traffic truck sat for a 1 and a half missing a gas cap fro some of that time ran good at first put new bosh platinum plugs and wires cleaned MAF censior runs worse now wont even roll down the road please help what next ?

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If the engine light is flashing, it means you have a misfire in one or more cylinders. it is most likely plugs or coil wires.
mine started doing this a few weeks ago. finally got around to changing the plugs today. the cylinder order on fords is easy, passenger side from front to back is 1234, driver side front to back is 5678. my number 4 cylinder had a plug that was collapsed. the metal piece was crushed into the contact, not allowing any spark.

Posted on Jul 13, 2009

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Most of the time when you drive your truck and get on it it bogs your engine light flashes and your a.c. also seems to get warm.then when you easy up on the gas it acts like it plays catch up. it was that i had about 2 to 4 bad coil pack on it then i replace them i had no more problems with it

Posted on May 15, 2009

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I own a 2001 F-150 5.4 triton with nearly 300,000 miles and it started cutting out when i accelerated and idled a little rough but took it into Ford dealership and I had bad coils and has been running great since!!

Posted on Mar 08, 2013

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Mine is doing the same thing and i just changed all my plugs last night and bought one $50 coil pack because the obd2 said that cylinder 6 was misfiring... It did help at first but im not sure if we installed the new coil pack on the correct cylinder... i know its on the driver side but i dont know if the cylinders are in a U shape starting on the passenger side from the back 1234 and then starting at the back on the driver side 8765 or if it is the passenger side from the back 1234 and then starting at the back on the driver side 5678 so firgure out the layout of the cylinders and you should be okay also the driver side is a pain we took most of the stuff off the top down to the throttle body and we had to lift the fuel rail off so if that is something your not sure how to do ask cause it took me and a friend who is pretty good with vehicles 3 hours for the driver side and 1 hour for the passenger side...

Posted on Jul 06, 2009

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I would definitely start with a new fuel filter. It is located on the passenger side of the truck but you will have to buy the tool needed to remove the old filter. It is a plastic ring that slides on between the filter and the end to unlock the fuel line. You can purchase this where you buy your filter. They come in a package of 5-6 for different size lines. Ask the sales person to show you how it works. I would also recommend a bottle of injector cleaner put in your tank, this would also help. Hope this works for you Take care shelby7

Posted on Jan 18, 2009

  • shelby7 Jan 22, 2009

    I would Definetly change the plugs. If you haven't changed them since day one it is time. There is only 1 fuel filter. Is the engine lite still flashing? If it is you may have to get a code reader to see if any codes are stored in the PCM. Without getting into a lot of tech. talk you may have to take it to someone who has an ODBll that can read the codes. But I would start with the easy stuff first. Hope this helps, let me know Shelby7

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