So I just put new 5" exhaust on and went to take it for a test drive. I got out on the road and was fine. Stopped and brought it up to 15 pounds of boost and let the brake off, I went 30 feet and it cut right out and died. Wont start and I got code po253. Is this the end of the VP44? Any help would be great Thanks

 

P0253 Fuel Injection Pump Fuel Valve Open Circuit

I believe that would be one of the worst codes to see.

 

Another vp-44 bites it hard.

Sure sounds like a siezed rotor to me.

Do you know what the fuel pressure was doing? Thats what usually does it.

 

I didnt have a fuel pressure gauge hooked up . But i cleared the codes again and got p1688 "Internal fuel injection pump controller failure". I just got into the diesel trucks so I dont no much. I do no I needed a fuel pressure gauge though.

 

What are you running for a lift pump?

 

according to Blue Chips Diagnostic Page, If you have a 1688 Code and the truck won't start, You need a new VP.

 

Sad to say but it's shot.

 

I'm in the process of removing my vp as we speak I've got a t bar hooked up to pull off the pump from the timing cover i've removed all 4 nuts holding the vp and 2 bolts from the mounting bracket but i keep turning the bar and it just wont pop its loose i can move it back and forth with my hand but i've use everything and it still will not just pop, i dont want to break it should i keep going or what?

 

Did you remove the nut holding it to the gear?


You did remove the injection lines right?

 

yes removed the nut and washer holding it to the gear and removed all the injection lines correctly