Question about 1991 Ford F150

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1991 Ford F150 300 6 cylinder, The solenoid on the side wall near the battery is getting red hot and causing the wire to melt and smoke. What can be the cause? The solenoid was recently replaced and the altinator went out so it now has a new altinator as well but the solenoid is getting red hot when trying to jump start because of a dead battery

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When you jump the truck, make sure you do NOT connect the ground cable to the body or frame of the truck. This is a common mistake and will melt a wire connecting the body/frame to the battery, and make it very difficult to get the truck started because of the voltage drop. Connect the ground cable to the engine block (safe) or battery (not as safe). Make sure you give the dead battery time to charge up when you jump it, or use a battery charger to properly charge the battery (better for the battery). If the voltage is too low (because the battery isn't fully charged), you may have solenoid problems. In fact, you may have already damaged the solenoid. If so, you will need to replace it again. Good luck!

Posted on Aug 24, 2010

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Make sure the solenoid is wired correctly,and that the cables are good,I would replace the solenoid,and check the starter and cables.

Posted on Aug 24, 2010

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Its likely your starter is bad and drawing too much power
from your battery to start .
Have advance auto check the amperage draw of the
starter while cranking , its free.

Posted on Aug 24, 2010

  • JOHN ALBURY
    JOHN ALBURY Aug 25, 2010

    If your starter is drawing more than 200-250 amps , you will eventually overload your
    solenoid and wire from the battery to the solenoid as well as the solenoid to the starter .
    your battery needs to be charged and a starter load test done , if your battery tests ok,
    as i stated , your likely to need a starter ,as well as primary wires to and from
    the battery , solenoid and starter as well being they are overheated , and a solenoid.

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