Rigtruck92

The lp doesnt do anything when I just click the key on but when I bump the starter it just jumps to 15psi then instantly turns off the cables are used as well but he said they were both on a good running truck

If I bump the key the pressure will jump to 15psi the drop straight to zero. I want having any problems till recently I changed the lift pump and injection pump in October ran great ever since then. I found an ecm and battery cables. A friends has them I can get both for 500$ I'm debating on just getting both and putting them on.

Ok I'll get that fused tested then run a scanner again . The wts light does not come on at all but the truck will start after cranking on it for a little bit and it runs fine other than it cutting out ever now and then on high rpms or cruising down the hwy. I bumped the starter to see if my lp was getting power and it would turn on for a split second then kick off it wont cycle for the 25 seconds.

Ok I will bet the alt bench tested and will also check the iod fuse. But would the iod fuse or ac noise be causing me to not have a wait to start light? And thanks for everyone's input iv been ready cummins forms for days but none of them related to my exact problems so I decided to jump on here to see if that would help. I will run some more test and keep you all updated.

I have a big line kit that came with the lift pump but it is just s line that goes from the lp to filter housing . I have found a few places that will send me a plug and play ecm but I wanted to help verify that was the problem before ordering one

Well yesturday my wait to start light completely stopped coming on and now I have to crank on the truck for a while to get it to fire. I have an after market lp airdog and the instructiona say to set it at 15psi ar idle

I have a 99 cummins and it started to cut out at high rpms I though maybe it was the lp wo I did a volt test and it was putting out 13.1 volts checked the fp ar idle its sitting at 15psi changed fuel filter then added lucas additive. Yesturday my radio quit working but still has lights on it no dome light and no power to the diagnostics port if checked all the fuses they are all good. I have been told it could be a bad diode in the alt putting out ac noise and iv also been told bad ecm. I do have an issue with with my positive cables on batteries always getting super corroded not long after I clean them. I need some help here before I go dump a pile of money in this thing.