Question about 1981 Ford F 150

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79 F150 won't start

79 F150 won't turn over. new battery, new solenoid switch. Lights, radio, and wipers all work. Switched the two small wires on solenoid because I thought I might have had them wrong. Engine started up as soon as I turned key to on position. Turned it of after about 15 seconds because starter did not disengage and kept turning with the engine. At least that is what it sounded like. I knew this wasn't right so checked manual and switched wires back to original position. Still will not turn over. Not even a click. Lights, radio and everything else still work.

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Try jumping across solenoid(touch 2 big posts w/a screw driver) check for a good ground between sol. housing and fender

Posted on Jul 06, 2009

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Try to determine if click is from solenoid on the starter or starter relay. Turn the headlights on and watch them while someone turns the key to start. If they get dim, probably the starter-have it tested-even new ones are sometimes bad. If lights don't dim, you will need to check the start circuit. Check for power on the small wire to starter solenoid when key is held in start. If no power there, work back towards the ignition switch. Check the neutral safety switch-should have power in and power out when key held in crank. The ignition switch will have a start wire out of the switch going to the neutral safety switch. It should have power with key in start, the only time the start wire will have power.
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