my bud has an 04 dodge cummins automatic, fairley stock, only afe cold air intake, and intake tube. its throwin some codes. p0628 wich is low voltage detected @ lift pump relay. where is this relay located or has anyone heard of this problem before or know what this need? also the other code is p0148 hpcr fueling error. we are lost on this one. the truck is cutting out and shutting off while driving and or idling. its doing it intermittently some times. we are gonna change the fuel filter 1st and go from there. thanks for any input.
jimmy

 

your lift pump is toast.

That is where the 0628 comes from, and the absence of low pressure fuel is causing the cutting out and stumbling.

being an 04, your buddies truck might have the lift pump mounted on the filter housing, those were very prone to failing. If he already has an update, its in the tank, and a pain to work around.

 

I've done a couple of these, if you need help, let me know.

 

thanks madhat. yeah its on the fuel filter canister an since money is an issue that i stated in another post here on the 3rd gen section he just might get a stock replacement from napa for now. thanks guys for the input and help!

 

well, i think i got it all wrapped up. i got my fass lift pump yesterday evening and started it this morning,, i also put a inline fuel filter after the tank and before the lp. i had to do some drilling and fitting and had to take off the front driveshaft but it was bad at all..when i got it all together it took some time to get all the air out of the lines, but finally i got fuel at the filter housing and she started up no problem after that, i found the pump at ebay for 195. and it took 5 days to get here,but the local shop wanted almost 800. to put it on and buy the lp.im glad im pretty handy. well i havnt ran it out the shop yet but i feel it go ok. the origanal lp didnt work at all and this one runs pretty good. all i have to do now is get a fuel pressure gauge and ill be done,all together id say out of 1 to 10 its a 3 to 4 on the difficulty scale, if you have all the tools and a concrete floor to work on its not to bad,i took the driver tire off the inner plastic fender and had to work from there and from the bottom, but it wasnt bad at all. by the way your talking about your friends truck and the codes id defenately say it the lp. good luck

 

I have the same problem, except for I changed my lift pump but the truck still staggers, and I don't know what to do. any advice?