Engine/Transmission (1998.5 - 2002) Intermitted Start on 1999

[pmillsap]

I have a 1999 Dodge Ram 2500 4X4. At the moment the truck starts when it cold / hot every time. When the truck is driven 30 - 40 minutes and then when it is left sitting for 20- 30 minutes the truck will crank but will not start. I have check the following when it would not start:



1) Swap the ADC relay - no luck

2) Verified that fuel is coming out of the lift pump when it is on - it is

3) Verified fuel is present at the banjo fitting at the VP44 pump - fuel does come up when the lift pump turns on

4) Verified the VP44 pump had 12 volts - it did

5) Verified the VP44 pump had a good ground - it did



After the trucks sits another 40 - 90 minutes it will always fire up. It does not run rough when it starts. At the moment everything I have read indicates it is the VP44 pump. Is there anything else that I could check before spending $ 1,050 plus? What other device could come into play. In closing this truck was just at a Chrysler dealer and they said it only showed a APPS code but could not verify the APPS to be faulty? Also when driving the truck the RPM rev's up very slightly. Any and all help is appreciated

 

[JGamble]

VP might be going... . am going through this right now... . sounds like the same thing that happened to me... ... . it sucks... . god speed and good luck... . btw... any codes?

 

[Bob4x4]

It may sound hokie but star would have you pour cold water on the vp to confirm pump failure in cases like that

 

[TDeltonto]

i am having the same problem. thats the way mine started and now the truck only starts every so often. i have done all the tests u have. i just havent had the $$ to fix the truck. but every thing ive read has said its the vp. could it be the ecm??

 

[TDeltonto]

any one????