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1990 Ford F-150

Question: 1982 F150 straight six 300ci motor cutting in and out on highway...

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shady_tree_specialty, 4.9L 6 Cylinder, Marietta, GA, December 20, 2009, 19:48
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 Rookie

I have a 1982 f150 2 wheel drive with the straight six 300ci 114k original miles...The truck drives fine in town, but on the highway when you get up to 65mph or so it will start cutting out....It does not have this problem when in neutral....only under load...any ideas?? truck has Cat, no muffler, I have replaced all of the following within the last month plugs,wires,fuel sending unit,water pump, alternator,thermostat,radiator. Any help with this would be great...

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  • Medium-star Best Answer
    Andy Y December 21, 2009, 15:04
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     Master

    You'll want to make sure your fuel pressure is good and the fuel filter (if equipped) isn't plugged. If flow is restricted, you might be fine around town but the float bowl may drain under freeway conditions

    I'm not sure if your truck has a cap and rotor, but checking inside the cap for arcing, corrosion, and carbon tracks is a good idea.

    That is where I'd start, hope this helps

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  • Answer #2

    Valleyautotech December 21, 2009, 15:31
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     Master

    This truck has a replaceable cap and rotor on the distributor and its very easy to change

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  • Answer #3

    Visitor, February 11, 2011, 10:11

    Change the ignition module.

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