2005 Duramax wont go over 2000 RPM
Diesel Bomber
Joined: Dec 2010
Posts: 1,190
Likes: 113
From: Fool's Golden State
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
Newbie
Joined: Oct 2014
Posts: 1
Likes: 0
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.
Newbie
Joined: Jul 2016
Posts: 1
Likes: 0
Duramax Boggs at 2000rpm
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
Newbie
Joined: Oct 2016
Posts: 4
Likes: 0
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
Newbie
Joined: Jan 2019
Posts: 1
Likes: 0
2005 duramax won’t go over 2000 rpm
does your truck have a chip in it? I just had it happen to me.
Newbie
Joined: Feb 2019
Posts: 2
Likes: 0
Same thing just happened to me. I changed both batteries a couple of weeks ago and sometime either shortly or immediately after my truck won’t go past 2000 rpm. The fuel pressure gauge on the tower is normally very active and now it just sits on 8 or 10. No power hardly whatsoever... I changed the fuel filter last night and if it helped at all it’s barely noticeable.
I should also note that I let the fuel tank get close to empty around the time this started as well. The truck has a chip in it and it’s got 200 k miles on it. Looking at taking it into the shop but just curious if anyone can point me in the right direction here with a diagnosis?
Thanks
I should also note that I let the fuel tank get close to empty around the time this started as well. The truck has a chip in it and it’s got 200 k miles on it. Looking at taking it into the shop but just curious if anyone can point me in the right direction here with a diagnosis?
Thanks
Newbie
Joined: May 2020
Posts: 1
Likes: 0
Same thing just happened to me. I changed both batteries a couple of weeks ago and sometime either shortly or immediately after my truck won’t go past 2000 rpm. The fuel pressure gauge on the tower is normally very active and now it just sits on 8 or 10. No power hardly whatsoever... I changed the fuel filter last night and if it helped at all it’s barely noticeable.
I should also note that I let the fuel tank get close to empty around the time this started as well. The truck has a chip in it and it’s got 200 k miles on it. Looking at taking it into the shop but just curious if anyone can point me in the right direction here with a diagnosis?
Thanks
I should also note that I let the fuel tank get close to empty around the time this started as well. The truck has a chip in it and it’s got 200 k miles on it. Looking at taking it into the shop but just curious if anyone can point me in the right direction here with a diagnosis?
Thanks
Was wondering what you did to fix yours
Diesel Bomber
Joined: Dec 2010
Posts: 1,190
Likes: 113
From: Fool's Golden State
If something shorted out, try running a jumper wire from the TCM case to vehicle ground and see if that corrects it
Newbie
Joined: Feb 2019
Posts: 2
Likes: 0
I did change the fuel filter.
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