5.9 Cummins fuel problem
We have a 1998 HR Endeavor with the 5.9L Cummins. Last summer a problem developed which drove my mechanic crazy. Engine would start then die. He replaced the lift pump and everything seemed fine for a...
Forum Discussion
I ran this by my diesel mechanic and here was his reply:
Is there a chance you have the engine serial number?
It should be an ISB 5.9L with a VP style pump. I just don't have a way of looking up an endeavor. If you do not have the ESN then if you can describe the injection pump for me I will know for sure what series of 5.9 I'm working with. Most likely it is not the fault of the lift even though it may be bad. Cummins drives the lift pump with a power transistor in the ECM. As they get older they sometimes fail. It may be causing a low voltage problem to the lift pump that causes them to fail prematurely.
Is there a chance you have the engine serial number?
It should be an ISB 5.9L with a VP style pump. I just don't have a way of looking up an endeavor. If you do not have the ESN then if you can describe the injection pump for me I will know for sure what series of 5.9 I'm working with. Most likely it is not the fault of the lift even though it may be bad. Cummins drives the lift pump with a power transistor in the ECM. As they get older they sometimes fail. It may be causing a low voltage problem to the lift pump that causes them to fail prematurely.
