Help: Engine Retarded

[Jimmy]

I have a 2005 GMC Duramax with 72000Km on it. I get an intermittent fault when I stomp on the accelerator pedal I cant get above 2000RPM. The tranny still shifts up but I can’t put the boot down; it feels like I am being starved of fuel at 2000RPM. If I drive it normally (no stomping) I can achieve max RPM no problem. The problem is fixed when I switch the ignition off for a few minutes, something must reset. If anyone has an idea what the problem might be I would appreciate any suggestions.

 

[Kat]

Moved thread here

You are having the LLY dreaded 1093 problem. How old is your fuel filter and is your truck stock. If you do a search there are plenty of threads about it.

You might have to do the shim mod.

 

[Kat]

Here is the link to shim mod

http://www.duramaxdiesels.com/forum/showthread.php?t=267

 

[Jimmy]

Not sure how old the fuel filter is and the truck is stock, there are three of us with the same truck mine is a 2005 the other two are 2004, the other guys haven't experienced anything like this

 

[Kat]

Change your fuel filter first. Might have got a bad batch of fuel if it just started happening.

If not pressure relief valve might be getting week and if that is the case then the shim mod should fix it.

 

[Jimmy]

Thanks Kat I'll give it a try.

 

[MWDHAND]

If you cannot get it figured, give Ted at MPL in Lacombe a call. I am sure he can help you out!!!

 

[Jimmy]

Thanks

Thanks for the info I'll start by changing the fuel and air filters tomorrow, they are probeably due to be changed anyway.