Mc22

Ok thanks for the info. The new lift pump runs for 25 seconds but there is no port for me to hook a pressure gauge to. So I guess I will install a gauge and go from there.

My 01 started running a little rough intermittently. It did it once and quit. Hell I thought it was a glitch but about 3 weeks later it was running rough again. I changed the fuel filter with no change. Then I changed the lift pump and it ran better but not good. I wasn’t having any issues with it starting at all, just randomly would get loss of power. At this point I was still driving it to work but it was getting worse. You could turn of the key going down the highway and boom it would run good again, maybe for a minute or the rest of the day. It finally got to where it would take a few minutes to start so I went ahead and changed the VP44. It ran perfect for 2 days and now it is back to hard starting and has a loss of power as soon as it shifts gears. Only code currently is the P0216. I checked grounds and all looked good. I’m a newbie and don’t have a clue as y’all probably can tell by now. I got the VP44 from thoroughbred diesel! Blow my little pea brain and tell me where to go from here! Thanks