Good luck with your truck , many well maintained Duramaxes have gone 500,000 and more , I hope you find your problem soon !
LLY: Hello i I'm new to the Duramax just bought a 2005 291000 miles love the truck have a
- Thread starter joecool752
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Well I don't beat on it or race that's what the magnum is for planning on keeping up with the preventable mantince.
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First picture's at idle 165 temp
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It looks like you can only see the actual fuel pressure. you need to compare the actual vs desired fuel pressure. You might need to invest in a better scanner or find someone local with efi live that will log it
Take it for a drive, have a friend watch the rail pressure, accelerate from 55 or so with heavy throttle up a hill. Rail pressure should jump to 23000 or so and stay. If it drops after a second or two, let us know how far it drops and how quickly. I'm thinking your fprv is failing
60 at warming up 45 to 55 running and 30 at idle rotax synthetic 15 40 was concerned when it low while idle
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Thanks I will make a run in the morning and post the results
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It jumped up to 24000 then dropped to 22200 ran out of room for a better test
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Doesn't sound like an issue or at least not long enough of a test. Are these the same conditions as before?
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No not couldn't really get on it for long. I will try the bottle test tomorrow can I put it on in am and check it later
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Did it throw the code before you changed the fuel filter? If not, check to see if the old fuel filter's o-ring stayed on the engine when you replaced the filter. Having 2 o-rings will cause it to throw a low FRP code and go into limp mode.
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Yes code before I changed the filter made sure that I retrieved the o ring.
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The truck finally threw the code again and went into limp mode it's a 1093 I wasn't pulling a trailer this time and it felt like it was starving for fuel and then through the code then I reset and running great the rest of the day tried to get it to do it again and it did not unfortunately I didn't have the scanner hooked up so I couldn't view the rail pressure I'm thinking I'm just going to weld my fprv valve weld a little hole that way I don't have to worry about a race plug not Sealing or shimming it
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