Engine/Transmission (1998.5 - 2002) What are the symptoms of a bad VP44???

[TPlasek]

I have a 2000 3500 with 100,300 miles. It doesn't want to start when it is warm, but all you have to do is walk away, come back in an hour, and it will start right up. It also runs and starts normal, if it starts. It doesn’t seem to be an air issue.



For the people that have had VP44's go bad, what were your symptoms??? Did it just go out all at once? Did it run bad?? Do the pumps either work or don't work with no in-between? I am hoping that it isn't the VP44, but I have a truck, with 14psi of fuel at VP44, that sometimes starts and sometimes doesn't. It only seems to fail when the engine is hot and the outside temp is hot.

I have tried all electrical connections.



Can someone share his or her experiences with a bad VP44???

 

[OutbackDiesel]

My pump went bad at 102000. One day after running a couple errands, I stopped at a steel supply and upon returning to my truck maybe a half hour later, I couldnt start it. I bled the lines and it started. It stumbled here and there on the way home. When it stumbled, bluish white smoke was produced in the exhaust. Over the next day or two when the truck got hot, it quit. A friend of mine that works at an injection pump service place said that you could run some water on it and it should start. (I must admit that running water all over it made me a little nervous) Anyway, it turns out that it was the injection pump, I bought another one, replaced it myself and have had no troubles to date. The pump is expensive but the job isnt really that hard in my opinion. But would probably be worth having someone do in order to get some sort of warranty on the labor I guess. For some reason when I bled the lines it usually would start. I can only imagine maybe that it was possibly a pressure release or something that gave the pump a quick little extra to get started. I really am not sure, but it worked for me.

 

[CWade]

Your symptoms of not starting when hot, and starting fine after it cools off, is a sign the vp44 pump is bad. The correct way to be sure is to have someone install the Cummins bypass harness on your vp44 when it's hot and not starting. If it still doesn't start, replace the vp44.





Charlie

 

[TPlasek]

Thanks for the replies. I figured it was the pump. I just didn't want it to be. I will be out of town for 5 days. If anyone else could tell me what theirs did, please do and I will check back here when I return.



I just want to make sure I think it is the injector pump befiore I spend the $1000 dollars...



Any place you guys reccomend to purchase a new one, or are they all the same. I think I hear that Piers sells them...





edit... Ps I like the idea of the bypass harness. If I could get it to fail on demand, this would be a very good idea!!!

 

[KatDiesel]

New pump is about $1400. Remans can be had for under $1000. Me personally I would go new. I'd see if your local Cummins shop could hook up their tool to test it.

 

[duaneparks]

Piers has them.



www.piersdiesel.com



They used to be the cheapest place I'd seen...



HTH.



Duane

 

[CWade]

Before you buy a vp44 pump. The German rebuilt ones seem to be more realiable than the ones rebuilt in Mexico.



Charlie

 

[DEZLPWR]

How can you tell the difference between the "Euro Spec" 44's and the "Mexi Spec" ones?

 

[yogibear]

I had 2 go out on my 00, both times, while running, just stopped, and would not re-start. the 1st. was at 172K, while towing a 40' 5er in the middle of Indianapolis on I-70 at 2AM with 182K on it. The 2nd was the re-man. , with 12,172 miles on it, 20 mi. west of Pendleton, Or. on I-84.



Larry

 

[rashwor]

yogi...

That does not speak highly of remans!

 

[yogibear]

Cummins in Pendelton said it was the first re-man they had trouble with. Who knows?!?! Cummins didn't charge me anything, but it cost me 4 nights in Motel, at 65. 00 ea. , + beer and eats! It was on a Fri. , and they didn't have one in stock.

 

[2-ND TIME]

VP-44's

The silver ones are from Bosch and the Mex remans are Black. hope this helps.