'02 tries to start itself - Ford Powerstroke Diesel Forum
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  #1  
Old 12-14-2009, 05:35 PM
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'02 tries to start itself

On my way to work this morning when i would hit the brake pedal the starter would kick on and i could hear a relay clicking and when i'd let off the brakes it would stop, when i pulled into the parking lot and tried to shut it off it kept cranking and started itself till i pulled the key out. After work it wouldn't even crank, i had to get a push to start it (i love manual trannys) and the whole way home it was doing the same thing till i got home and it wouldn't do it. i shut it off and now it wont start again. thanks for any help.
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  #2  
Old 12-15-2009, 09:03 AM
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Sounds like you have a crossed wire somewhere under the dash. Check everything around the brake pedal assembly, you will proabably find a wire that is stripped from rubbing the linkage.
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Old 12-15-2009, 09:09 AM
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these things just never quit huh?

Ya sounds like something fairly simple with your wiring. Good luck
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Old 12-15-2009, 09:25 AM
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your truck is possessed....bathe it in holy water
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Old 12-15-2009, 03:45 PM
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Checked the wires, nothing bare or rubbing. Could the computer be causing this?
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Old 12-15-2009, 04:03 PM
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The starter also kicks on if i manually turn on the trailer brake controller too, not just when i hit the pedal.
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Old 12-16-2009, 05:32 AM
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That's sounds like "backfeed" and I wouldn't think it has anything to do with the computer.

Somewhere, you've got some cross connected wires. Could be a real pain to find, you gotta look carefully at all wire bundles and connectors. Look for melting maybe.....
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Old 12-16-2009, 05:43 AM
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I'd say almost absolutely a short somewhere.

I would start with any bundle near the brake and brake pedal lever/bar. Then start tracing brake light wires. Sounds like perhaps the power is coming from the brake lights the shorting to through the starting circuit.

Wiring probs are rarely easy to deal with (accessibility is hard) and without a DVOM and a good wiring diagram, you're in for an even more difficult task.
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