Engine Dying w/out warning or codes (Fuel Pressure Regulator??)

Max'd Out

New member
Jul 21, 2009
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Paducah, KY
First time poster here. I've got an '01 LB7 with 220+K miles (other infor in signature). I've been having a problem recently with my truck dying at random times. It is never the same scenario it seems. I could have just hopped in it and it die at the end of the drive way or it could be after a long day of driving. It could be while stopping at a red light, stopped for a few seconds, or taking off. It could be at low throttle position or full throttle position.

It seems that it is cutting fuel from the motor. Sometimes it will cut out and lose power only to "restart" itself and go on as normal. Sometimes when it dies it will fire right back up, other times it has to sit for a minute or so taking several cranks to get it to fire.

The first time I remember it happening I was getting on the interstate. I had the throttle pinned trying to get up to speed to merge in from of a semi when the whole truck shook and the engine just reved like the tranny had let go. When it happened the service engine light came on and it wouldnt go over 45-50 mph before redlining. I thought I had lost high gear. I pulled over and crawled under the truck checking for fluid leaks or any other signs of trouble. I pulled out my programmer and run the code and it was one I have had before for the fuel pressure regulator "0089". I cleared the code, started the truck and it drove home like brand new. Since then rather than rev the engine and stop pulling, it just kills it totally. Only no codes show up. It seems that the FPR could be the culprit, but I wanted to get some opinions before spending any money on it.

I've also pulled both my programmer and chip off of the truck. Ive run it stock, with the programmer only, the chip only, and both. No noticable changes in any application. What would make the FPR code trip and then go away without making any repairs? All I do is clear the code and it could go away for months or come back on as soon as I start it.

I don't know a lot about motors, just enough to be dangerous. I basically learn about stuff as it breaks and needs repair. So IDK what the effects of a bad FPR is or how to fix it or what it even looks like. Some ideas that pop to mind are the fuel pump relay or an overheating coil. But IDK if those are even on a diesel engine. This is the first I or anyone I know has owned. So please excuse my ignorance.
 

03-GMC

Let there be light!!
Mar 26, 2009
485
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38
SLC, Utah
I know my Edge has shut down my truck a few times but will always restart just fine. It does it randomly too it sometimes months apart other a few days. Stupid Edge!!
 

Max'd Out

New member
Jul 21, 2009
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Paducah, KY
I guess it could be the Edge. I'll pull it off again and see.

I'm pretty sure I know the rough running you are talking about with the regulator. And no, this problem has nothing to do with the running rough of the regulator, in my opinion. I've experienced it before and like I said, I clear the codes and it usually runs fine for several months. This seems to be totally independent of the rough running of the regulator...it just happens at the same time sometimes...I think. I only mentioned it because I didn't know if this was another symptom of a bad regulator. 99% of the time the truck is running perfectly and just quits running.

Is the rough running you are talking about usually as you are stopping at a light or something and as the RPMs come down it has a heavy lope and rough idle?
 

maine04max

New member
Dec 11, 2008
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I would lean toward the edge also .... I had mine quit on me many random times . customer service replaced mine free of charge and then sent me the newest version 12.0 and that seemed to have fixed the issue . good luck
btw I would mention your on the forums as i did and they seem to be more supportive
 

E.carter

Member
Feb 16, 2008
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Princeton, Iowa
Welcome:welcome6:.... I was confused for a minute with your screen name I thought the max'd out crew made a new profile then I saw the edge and new guy from ky
 

Mike

hmmm....
Feb 17, 2007
2,184
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36
San Angelo, TX
My LB7 would just die. Move some stuff around and it would start.

A year later and just being lazy with putting up with it I found I had replaced a fuse in the injection B slot, same fuse runs the FICM [ no codes ], with a china made fuse which was not making a good connection. Found the blades to be thinner.

Replaced fuse with proper fuse and no more problems.

A LOOOOONG shot but thought I'd mention.
 

Max'd Out

New member
Jul 21, 2009
3
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Paducah, KY
Thanks for the info guys.

maine04max - How did you go about getting edge to replace yours? Seems they would be reluctant to replace an older chip like mine.

racinmike77 - PPE was my first choice and I was in the process of saving up for it when I got these. A guy I happened know sold his Duramax when diesel got really high a year or so ago and he pulled these off of it. He offered to sell them to me plus the gauges for $200. Couldn't really pass that deal up considering my finacial situation.

Anyone have any experience with TS Performance. I grew up 10 minutes from their shop and Ive stopped in a couple times and asked them about their stuff. They sound like they have some comporable stuff with PPE and Edge for half the price, but wasn't sure how much of that was just a sales pitch. I'd be interested to hear some peronal experiences.