roanokecummins

I have a 1999 dodge ram 2500 with 5.9. I had purchased a quadzilla tuner and I want to use the fuel pressure monitoring with the programmer. Does anyone know a part number or where I can get a sending unit that will work with this? Also my low fuel pressure warning kit I installed stopped working. I grounded the wire that goes to the pressure switch and it lights so I know the switch is bad. I just need the switch but can only find new kits. thanks

update on issues: I had charged both batteries up and load tested them. both passed load test. load tested them 3 hours later and still passed. I decided to unhook the intake heater leads (the leads that hook to the battery on the drivers side. I then unhooked both batteries (positives and negatives) and left them unhooked for over 2 hours. Note--when hooking up batteries, my lift pump came on and ran for about 10 seconds! When to start truck turned key on and waited for the lift pump to come on. It took over 10 seconds for it to come on and it ran for 8-10 seconds. I cranked it over and it started right off. Charging got to 14 volts in 3 seconds and stayed there. I have shut it off and restarted it 5 or 6 times this afternoon and evening. Charging seems to be fine now. However, the lift pump still takes about 10 seconds after turning the key to ignition before it does the 10 second prime. I went and talked to the local Dodge Dealership this afternoon. They said that it the PCM and they would be glad to get me one. I asked if the were 100% sure it was the PCM, they said no! But that is how they would attack the problem. needless to say I am not taking it there anytime soon. Thanks for all the ideas. I just want to figure out this delay in the lift pump coming on. I think I am going to rig up a way to detect when power gets to the lift pump to determine if my FASS is not starting correctly and to determine how many amps it is drawing. I will update on my findings.

Hello, I have a 1999 24v what developed several problems. 1. batteries get drained overnight 2. takes it several minutes to get it to charge 14 volts. 3. lift pump will not come on with key switch 4. lift pump will not come on with bump of starter. Replaced alternator----same problem. disconnected batteries for 1 hr. Now lift pump will come on but it takes 5 to 7 seconds to come on after key is turned on. Still takes several minutes for charging to get to 14 volts. lift pump is not making enough pressure when running. Batteries are less than 1 yr old and they are interstates. lift pump is a fass that replaces the factory lift pump. its 2 yrs old. I have a quadzilla programmer set to level 3. level 0 does the same thing, level 0 is factory setting. quadzilla was installed 2 yrs ago. also new vp was installed 2 yrs ago. I am guessing its the pcm, but any ideas would be helpful thanks