cps help
Post Fiend
Joined: Jun 2004
Posts: 9,293
Likes: 10
From: Parker, CO
Try unplugging the wiring harness off the ICP sensor and crank the truck. With it unplugged, the PCM will load default values. If the truck still won't start, it's the IPR that's gone bad.
Post Fiend
Joined: Jun 2004
Posts: 9,293
Likes: 10
From: Parker, CO
When I had a sticking IPR, the truck would sometimes fire up after sitting for about an hour or so. If yours ends up firing up again, drive it home and get a new IPR to throw in it. If it won't start, then you'll probably have to tow it home.
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Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
Curtis. Will a bad IPR make it stall like someone just shut off the key? I had guessed it would stumble once or twice before dying.
Edit: Sorry I forgot you for a second Benny. 10 minutes is awfully close. Any buddies with a truck and a chain? Does your glow plug light function normally? Does the water in fuel light act funny? If you've got nothing better to do, you might wiggle the big wiring harness that comes up and over the drivers valve cover. Also check that harness above the VC to make sure it's not chaffing against a metal bracket. Chaffed wires is what left me on the side of the road.
Edit: Sorry I forgot you for a second Benny. 10 minutes is awfully close. Any buddies with a truck and a chain? Does your glow plug light function normally? Does the water in fuel light act funny? If you've got nothing better to do, you might wiggle the big wiring harness that comes up and over the drivers valve cover. Also check that harness above the VC to make sure it's not chaffing against a metal bracket. Chaffed wires is what left me on the side of the road.
Post Fiend
Joined: Jun 2004
Posts: 9,293
Likes: 10
From: Parker, CO
Just don't tell my wife what my whole scheme was 
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
Yep. Mine was stalling exactly like that. No codes, just sudden shutdown. Thought it was a CPS until it did it with the new one. Then it finally threw a P1280 code, so I knew then that it was an oil issue. The ICP sensor was new at the time, but I unplugged it just in case, but it had the same symptoms. So I narrowed it down to the IPR, and used the stalling issue as an excuse to my wife to buy big oil Just don't tell my wife what my whole scheme was
Just don't tell my wife what my whole scheme was Sounds like the best fix for this is big oil, but you could probably get by with just a new IPR.
Thanks for the info Curtis.