Mike wolf

yes that is what I meant big line kit.

Ok. I have a fass ddpr. My gage only goes to 15 going to put a new one on that goes to 30. But I was watching it last night and going down the road about 60 it stay at about 12 to 14. Now saying all of that. I have not put on a big holes kit. Plus I have a filter that it goes thru before it goes o the lift pump plus i have it going thru the stock fuel filter before it goes to the vp44. Do i have it going thru to many filters is way the psi is not staying up in the 14 to 18 range? Just Wondering. Or is because I have not got a big holes kit on it???? ????

I have a fass lift pump on it.

Yes I'm going to replace it with one that reads higher..

No. I just cleaned all Connections and Connected them and started it and it ran rough for about 2 or 3 mins then started running good. So I think when my vp44 computer went out and I put the new one on the ecm had not realized that there was a new vp44 or all the injectors were not all Primed. I thought about putting in old vp44 make on just to see if it was the pump or not. I bought the new vp44 from Thoroughbred diesel. Going to call them tomorrow and see if when they get my old one back if they will check it a see if was bad or not and if not send it back to me and I will send them there back. It idle it is bottom out 15 is all my gauge goes to. Thinking I may change it out to one that goes up more.

Ok guys I got it running and running great. Must have been the vp44. Thanks for everything ..

I just put on a new vp44 pump. It's new just got it in last week. Ye I have between 15 and 16 on my pressure gauge.

Ok guys a have a 2001 dodge 2500 diesel. It has 210,000 miles on it. Replaced the vp44 and put a fass lift pump on it 1 1/2 ago. About 2 mouths ago I was going down the highway and put it to the floor and it died on me. Would not start back up so I had it towed home. Late that day I try to restart it, it took a long time to get it started and it sounded and run like Crap. Like it was running on 2 or 3 legs. Towed it to dodge dealership. And they told me it was the injector pump. So I had it towed back to my house and order a new injector pump and put in one. But it is still running the same way. Like crapp.. I even try putting on a new ecm. But it still run like crap. Here are the codes I'm getting. P0122 P0253 P1689 P1688 Please help me if you can Thanks Mike w