Question about 1981 Ford F 100

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Starter and solenoid issues

My 79 Bronco had carb issues and stalled, while trying to start her again I melted the battery cables on the solenoid. When I tried to restart I noticed one of the smaller wires on the solenoid turned red while starting and during the second start the starter motor wouldn't stop or disengage. after rebuilding the carb and replacing the solenoid and putting fusible links on all the solenoid related wires I obtained the following problem: the starter cranks with the key out and the switch in OFF- also it cranks while the key is in and the switch in the ON position. May I mention that the engine only gets power when the swich is in the ON position but with the starter going i cant run neither engine or truck. HELP PLEASE! I need this truck for college.

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  • dasbronco Feb 27, 2009

    IT WILL START WITHOUT THE KEY. THE ONLY MOMENT THE TRUCK DOESNT CRANK IS WHEN THE TWIN FUSIBLE LINKS THAT GIVE POWER TO THE TRUCK- THE ONES THAT HACE A LINK EACH BUT SHARE ONE TERMINAL. IF I REMOVE ALL THE OTHERS EXCEPT THESE THE TRUCK CRANKS

  • Anonymous Mar 02, 2009

    Hey DASBRONCO here! I tried removing each fusible link and kept an eye on the behavior of the truck but the same thing kept happening exept for one thing: after I began to remove links the problem shifted and only relfected if the key was in and the switch in the ON position. But, when the moment came to remove the links that share a teminal ( the ones that power the rest of the truck ) nothing happened. Any ideas?

  • gerry bissi May 11, 2010

    Basically, you need a heavy wire going from the battery to the starter solenoid large termial to supply the heavy cranking current.



    The other wires are for the igniton switch. So, you need a wire from th ignition switch to the starter solenoid. This may have been the one you melted somehow. Did you hook it up to the right connection on the solenoid?

    here is 96 bronco, don't have 79.



    Starter Relay

    The starter motor solenoid relay switch is an electrically operated switch used to connect the windings in the starter motor solenoid to the battery. The relay consists of a coil, plunger and contact disc. When the coil is connected to battery power through the ignition switch, it becomes an electromagnet. The magnetic force draws the plunger into the coil core. A disc connected to the plunger contacts the relay terminal, completing the battery to solenoid circuit. When the key or button is released, the magnetic field in the coil collapses and spring pressure returns the plunger and contact disc to the open circuit position.







    starter system 96 bronco

  • James Waters May 11, 2010

    will the truck start if you disconnect the fusible link you put in ? with or without the key

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  • 14 Answers

I think you might have some wires mixed up!

Posted on Mar 04, 2009

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