2005 Duramax wont go over 2000 RPM
#11
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What Knagel said,
after reading this over again, it seems that the first thing to check is the pressure relief valve. Google "Duramax bottle test". should get you all sorts of info on how to check if it is leaking.
or... just shim it anyways
after reading this over again, it seems that the first thing to check is the pressure relief valve. Google "Duramax bottle test". should get you all sorts of info on how to check if it is leaking.
or... just shim it anyways
#12
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For more than 2 years periodically out of the blue the engine will not rev over 2000RPM! if you stop and turn the truck off and wait 2 minutes and restart it will go back to running fine, sometimes for a minute sometimes for a month. i took it to a dealer and they said it was the computer, egr, and egr cooler. I replaced them all and it made no difference. i have put over 50k miles on the truck fighting this , any Ideas? The truck has 215k and runs like new when this is not happening.
#13
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I've had this same problem on mine and I changed the fuel filter and air filter no fix, but then I went to the fuel filter and the red wire that connects on there was loose so I played with and pushed it back on there nice and good haven't had the problem since hope this helps
#14
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fuel pressure regulator valve sticking, get a quart of Royal Purple Transmission oil and put in and do that every 8 fill ups. Low Sulphur in Diesel causes this and Fuel Rail Etc... needs to be Lubed
#15
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does your truck have a chip in it? I just had it happen to me.
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