75 F250 390 engine kill problem
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75 F250 390 engine kill problem
The last couple of weeks my truck just dies going down the road. Just about as soon as it dies, I can start it back up and down the road I go. I put a different coil on to start with but do not know how to trouble shoot what seems to me to be an electrical problem.
Any ideas would be appreciated.
Any ideas would be appreciated.
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Joined: Jan 2001
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From: Virginia
This is going to be hard to track down because it's so intermittent. What I would do is get a length of wire, and a 12 volt bulb and socket. Run the wire out the front of the driver's door, tape it to the cowl, and run it underneath the rear of the hood. Hook it to the coil + wire.
Hook the other end to the light bulb. Take another short piece of wire and run from the light bulb to a good ground under the dash. Sit the light bulb were you can see it.
While you are driving, and it quits, see if the light goes out. If it does you then know you are losing power to the coil +. This could be a wiring problem in the plug, or an ignition switch problem, etc. If that all looks good, you could go ahead and move the test wire to the ignition hot wire on the ignition switch. If the light still goes out, then I would suspect possibly a bad ignition switch or a bad connection out at the starter solenoid at the battery + connection.
Hook the other end to the light bulb. Take another short piece of wire and run from the light bulb to a good ground under the dash. Sit the light bulb were you can see it.
While you are driving, and it quits, see if the light goes out. If it does you then know you are losing power to the coil +. This could be a wiring problem in the plug, or an ignition switch problem, etc. If that all looks good, you could go ahead and move the test wire to the ignition hot wire on the ignition switch. If the light still goes out, then I would suspect possibly a bad ignition switch or a bad connection out at the starter solenoid at the battery + connection.
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