i need some help on my 99 cummins last night i was backin up a hill and it just cut off so i checked to dct codes i had low fuel calibration so i cleared it then it ran i backed up agin and it cut off checked the code agin p1688 code of death now it want run the asd relay was buzzing on and off this mornin win a tryed it i got that to stop now the wait to start want come on and still want run

 

usually means the psg on the pump is going out. which cost almost what a new pump cost. and the shutting off will get worse wait till your on the interstate at about 80 and it shuts off. not fun. i would plan on a new pump soon.

 

it there a chance it could be a wiring issue it want even start now i ant had the truck but about a mouth and the pump was put on about 50xxx miles ago

 

a slight one maybe. if it killed after only 50k you may have a supply pump issue. that needs to be checked before you go any farther. and for it not starting when the pump goes out it wont kick the lift pump on at all.

 

Do you have a fuel pressure guage?


Sounds a lot like its time to buy a new VP-44. Although the wait to start light not coming on is somewhat confusing

 

NEW MEMBER!!!!!!

 

NA I ANT GOT A GUAGE the boy i got it from had to chips stacked but i took them off and just ran the superchip sometimes i dont even here the sup pump now and the asd was makin a bussin sound now it ant im gettin air in my filter if i turn it over then pull the valve air would come out then fuel

 

If he had a couple of chips stacked and no fuel pressure gauge - you can just about bet that youre due for an injection pump and likely a lift pump as well.

Clear the code and see if it comes back.

 

i cleared the code got the wait to start back now i ant gettin power to my fuel pump i got 2 of the p1689 p0253 3 of the p1688 im goin to buy a in the tank pump tomorrow. i took it out ant jumped it it comes on but dont pick up fuel

 

the codes came back