No start problem
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Trailering
Joined: Mar 2016
Posts: 22
Likes: 1
No start problem
My truck will Initially start andruns great. However, after a couple of stops, it won’t start. If I leave it set for a while, I can restart it. I change the PCM with a new one from full force diesel. The truck started up and ran with no problem. I parked it and did not start again just like it did before.
Any ideas I'm stumped.
Any ideas I'm stumped.
Lead Driver
Joined: Jun 2004
Posts: 6,380
Likes: 601
From: Amarillo, TEXAS!
No restart when hot is usually a symptom of low ICP caused by (in no particular order) leaking injector o-rings, faulty IPR valve, failing HPOP. What made you decide to replace the PCM?
Lead Driver
Joined: Aug 2022
Posts: 5,108
Likes: 1,423
From: Oologah, OK
I would have cleared all codes, and started over again.
not much can kill the PCM normally.
High Voltages ( alternators that run amok can do this )
Shorts on wires that should not have a short.
not much can kill the PCM normally.
High Voltages ( alternators that run amok can do this )
Shorts on wires that should not have a short.
Papa Smurf
Joined: Nov 2009
Posts: 1,080
Likes: 204
From: Woodstock, GA
Get some Can Spray Air Duster... spray that cold air on IPR and see if it will start after that. Or pour ice water on it. Have read previous stories of people doing that to find an overheated IPR
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Trailering
Joined: Mar 2016
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Lead Driver
Joined: Jul 2017
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From: WV
Originally Posted by falltome
Cooling the IPR worked. Thank you for your help.
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Joined: Feb 2010
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From: Elk Grove, CA
Problem with rebuild kits is they do not include the electric solenoid. That is the part that fails when hot. So it's new IPR time.
As said above only buy Motorcraft, and only from trusted sources. Plenty of fakes out there.
As said above only buy Motorcraft, and only from trusted sources. Plenty of fakes out there.
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