Folks,
I'm having an issue with my 1999 dodge 3500 dually. 5.9 cummins. I just replaced the fuel pump and the crankshaft position sensor. Those were the errors which came up when i ran a check when the check engine light came on. Everything seemed to be going to smooth to be true. I finished hooking all that up, ran it down the road, ran some errands. When i was leaving the store to go home, the truck bogged down and i had very little fuel pressure. Then it felt like it was starving for fuel and i couldn't get any mph past 30, then 20 and finally the last mile or so i limped it home at a speedy 5 mph. any thoughts? I thought it might be the pump in the tank, but wanted to get your thoughts. i appreciate your help!

 

fuel filter?

 

Need to hook up a fuel pressure gauge to see what the FP is actually doing. It could be a bad pump or it could have picked up some trash. Changing fuel filters is a good idea if you haven't done that lately.

 

I just replaced the filter about 4 months ago. Sounds good, i'll check the psi. The pressure should be around 20 psi, is that correct? Thanks folks, I'll do that and let you know how it goes.

 

Since I just went looking for this info, I do believe I have read that ideal fuel pressure is 14-15psi. Someone correct me if I am wrong.

 

Ideal is no more than 20 and no less than 10 under any situations including wot

 

Any update??