ALTITUDE PRESSURE SENSOR
Hello: I have an 07 Chevy Duramax/Allison 2500hd. Last year while heading up to the High Sierras and pulling my 30ft 5er, the engine light came on. After calling On star it was determined that it was...
Forum Discussion
NMDriver wrote:
That year(and some other years like my 08) of Duramax have a fuel line problem when under load at high temperature. You can read about it on the Duramax forum. link
Basically the rubber fuel hoses collapse due to the injectors sucking to hard. One cure is to get heavy duty hoses (the link provided solution) the other is to put a lift pump on the truck to feed fuel instead of having it sucked out of the tank.
The lift pump solution has other advantages for the injectors but is around $1000 pro install vs the better hoses are $100 if you DIY.
BTW: A code reader will likely say you need a new fuel filter or injector rail, or injectors. None of those are the problem it is low fuel pressure that causes the problem. I have a code reader and it kept telling me my fuel filter was clogged. It was not the fuel filter.
One word of caution about the fuel filter. If it was not installed correctly (gaskets pinched) you may be having a air leak and that too will cause the symptoms mentioned.
what code is popping? the fuel hose issue is the real deal and can have an effect on your injection pump (CP3)lasting. their is a TSB for the collapsing fuel lines. collapsed fuel lines cause the CP3 to work extra hard/get very hot.
