spontaneous engine cranking - Ford Powerstroke Diesel Forum
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post #1 of 12 Old 04-15-2014, 04:20 AM Thread Starter
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spontaneous engine cranking

I have the exact opposite problem of most 7.3 owners. No Crank or slow cranking is not a problem here. My 2001 7.3 is doing something that I have NEVER heard of anyone else's doing. It will randomly without even a key in the ignition, start to crank. It will continue to crank until the batteries are dead or my starter is melted. It is so random and spontaneous (happens maybe twice a year) that I have NO good ways of diagnosing the problem. Has anyone ever seen this, and what was your solution?
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post #2 of 12 Old 04-15-2014, 04:40 AM
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I think an Exorcism is in order. Good luck.
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post #3 of 12 Old 04-15-2014, 05:07 AM Thread Starter
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Originally Posted by Harley516 View Post
I think an Exorcism is in order. Good luck.
Ha--- I was hoping for something a little bit more mechanical and a little less spiritual. But I guess The Bible does say


"For we do not wrestle against flesh and blood, but against the rulers, against the authorities, against the cosmic powers over this present darkness, against the spiritual forces of evil in the heavenly places."
Ephesians 6:12

Not sure if we could take that verse more out of context but.......

Anyone have any earthly solutions to my problem?
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post #4 of 12 Old 04-15-2014, 05:10 AM
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Somthing, possibly moisture must be grounding or shorting your starter or solenoid..I would install a 'dead man' on my ignition until I solved that problem.
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post #5 of 12 Old 04-15-2014, 06:24 AM
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First, what kind of relay do you have?

In an '01 (depending on if it got the electrical upgrade that happened that yr) you could have Either the "classic" starter solenoid, under the hood, on the passenger side OR it's a 30A "Bosch Type" of relay in the fuse box.

If it's the Bosch type I would, just because, swap it out (couldn't hurt )

How's the Ign Sw Feel? Sloppy? Or maybe Binds sometimes?

Twice a year is going to be just SO Intermittent you'll Never "catch" it, you need luck on your side!
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post #6 of 12 Old 04-15-2014, 07:36 AM Thread Starter
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It has a relay on the fender, which is odd to me considering there is also a relay on the starter. seems redundant.

The ignition seems fine, not sloppy.

I'm really hoping that someone else has had this issue?? Anyone
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post #7 of 12 Old 04-15-2014, 08:01 AM
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The thing on the Starter is the Bendix. Yes, it's a solenoid but is also responsible for throwing the starter gear Out to engage with the flywheel.

I'm not even sure this is possible but,,,, there's a common issue where by water leaks, from the corner of the windshield above it, onto the GEM module (your "body" computer located behind the fusebox) and causing all sorts of crazy things to happen. As I said, I don't know if it could even BE the cause of engaging the Starter but, look for evidence of water up there. Maybe take note, if it happens again, of whether it's been raining hard before it did it...
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post #8 of 12 Old 04-15-2014, 09:28 AM Thread Starter
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I have already had my "Ford Waterfall" fixed. The truck is now parked inside so water isn't the issue. It could be residual damage to the GEM from the water in the past. I just wonder why it's so random.
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post #9 of 12 Old 04-17-2014, 01:16 PM
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my silverado did this as well. this is how i found out i had an auto start installed by the previous owner. unit had been poorly installed. just a thought to look for something else.
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post #10 of 12 Old 04-17-2014, 01:36 PM
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Originally Posted by greasemykey View Post
my silverado did this as well. this is how i found out i had an auto start installed by the previous owner. unit had been poorly installed. just a thought to look for something else.
beat me to it...either this or a short somewhere

What this nation needs is cleaner thoughts and dirtier fingernails...
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