Engine/Transmission (1998.5 - 2002) VP crapping out or injector?

[NDaniels]

VP crapping out or ? Codes: p0253 + p0236

Well the truck started running a little rough on mid throttle accel, acts like a slight miss, sometimes more- just not smooth. Turning on the PM3 only aggravates the problem. It doesn't have the power that it used to, also the idle is a little different, thats hard to tell with hrvp. Today I finally got it to throw a couple of codes p0253, and p0236. The VP is only 2mos and 4 days old. Any and all help is appreciated. Thanks, Nick.

 

[ThrottleJockey]

P0236 (M) Map Sensor Too High Too Long Problem detected in turbocharger wastegate.





P0253 (M) Fuel Injection Pump Fuel Valve

Open Circuit

Problem sensed with fuel circuit internal to fuel injection

pump.

 

[DavidC]

I had the 253 code at one time with the DDUFM box. I completely unhooked the box,wiring harness and stock boost elbow installed and the truck ran fine. Diesel Dynamics replaced the box and everything was fine after that.



Dave

 

[NDaniels]

Update:

Well I disconnected the pm3 completely and checked over all wiring. I found that the posi tap for the power pierced the side of the wire and didn't go all the way through- corrected that and then drove w/out pm3 hooked up. Still has slight miss under acceleration, but didn't feel any surge as before. I couldn't get it to throw any codes. Came home and reconnected pm3, drove, no codes. Miss is more noticeable w/pm3, but at least it is consistent. Under full throttle it is hard to notice. I'm hoping all the codes were related to power wire and not vp . I've never had an injector go bad but is this sounding like a possibility? Any and all opinions are welcomed. Thanks, Nick.

 

[Turbo Tim 1]

I had the 0253 code and a stumble with my Edge Comp box, ended up finding out that the ground was intermittant. Does the PM3 box have a ground wire? Is it run directly to the battery? If not run it to the battery and try that.

 

[NDaniels]

No pm3 is grounded to pump wiring harness. I'll give it a try tommorow after work. It surged on the way home under moderate throttle today- pm3 was on. tommorow I'll make the drive with it off. I'm scared that its the vp - idles different, doesn't run as smooth, intermittent surge on accel. Also I changed the apps several months ago. I'll call pdw tommorow so he knows what is going on with it. Thanks for all replies, Nick.