Question about 1988 Ford F 150

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1988 f150 is shutting off randomly and getting worse.replaced ignition switch with no results. When it cuts off I can cycle the key and starts right up. Without cycling the key just turns over unless

Replaced ignition and checked connections. Made sure had fire and fuel. Possible eec or pcm?

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Not really. Check your grounds and positive side of the battery and ignition. Most likely ground shorts/ bad connections.

Posted on Dec 03, 2014

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1988 ford f150 starting problems


If the problem is the starter won't crank the engine over, check the small wire at the solenoid (the one from the ignition switch). It should have power when the key is held in crank. If no power there, trace the signal back to the ignition switch-check the neutral safety switch-at the clutch pedal-or the park/neutral switch on the transmission, if automatic. Check if the ignition switch has power out of it on the start wire with key in crank. Use a voltmeter or testlight for checking.

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Sounds like there's a grounded wire somewhere between the ignition switch and the solenoid. When you bypass the switch with the screwdriver you don't ground out the line, but with the switch the ground shorts the circuit, blows the fuse, and then won't start the engine.

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Where is the fuel shut off switch on 1991 ford 150?


On a 1991 F-150 the Fuel Shut Off Switch is located on the left and above where the steering column passes through the floorboard.

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Can't shut off power.


I have an '86, and the ignition switch is on the steering column, right under the column shroud. That's what the actuator rod connects to, it activates the ignition switch when you turn the key. So if yours is anything like mine, there's just two screws holding the shroud on, so you should be able to remove the shroud and manually manipulate the ignition switch since the actuator rod isn't connected to it anymore. That way you can hopefully start it as well as turn it off.

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Remove the ignition switch cylinder and inspect the contacts in the column. Look for dark spots, scratches, excessive scuffing. My guess is that cleaning the contacts with a little tiny piece of sandpaper and perhaps bending them out a little (so there is more pressure between the contacts when you reinstall the cyclinder) will cure the problem.

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I accidently put the wrong key in the ignition of my 1988 chevy nova. I got the key out but the right key doesn't go in now. Any suggestions


It sounds like you jambed the tumblers in the ignition switch.
You might want to try calling a locksmith to discuss if this is something that they can do.
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