Engine/Transmission (1998.5 - 2002) VP Question

[cochrandc748]

Hey guys just got finished replacing a cracked 53 block but went to start and bleed fuel injector lines and could only get fuel to come out of #4 injector. Checked for codes and got 1690, 251, and 252. Pump was running great with no problems before I pulled the motor. Is it possible that i installed the pump keyway backwards and it is causing this problem because I noticed one of the codes was a timing sync problem. The engine cranks and runs for just a few seconds and dies. It wont even try to idle or respond to any pedal input.

Should I check the key or just order a new pump from industrial injection? The truck and pump have 137,000 miles on them. I have a aeromotive pusher pump on the frame and it has always had fuel to the VP. Any input guys???





TIA,

Dustin

 

[OPoole]

Make sure your APPS is plugged in good.

 

[monkeyman]

Is it smoking real bad at idle, like tons of white smoke?

Rick

 

[MCummings]

When I was doing my '98. 5 I was talking with Piers and he told me to watch out for trucks that did or did not have a crank position sensor...



Maybe somethin' is up there.



Merrick

 

[cochrandc748]

All i did was change out the block. I reused my crank rods ,ecm, inj pump etc. The truck was running great when i shut it down to pull the motor. I just find it strange that it would just go out sitting on the shelf in my garage without any problems or codes before hand. When i first got it crank it would only idle at about 500 rpms or so and didnt idle long and died. It then threw the timing sync code. Any input is appreciated guys. Thanks for the help so far

 

[Rman]

possibly re-check the pump timing, perhaps it's off. I'm not familiar with the change over procedure, but i recall some folks getting the timing pin in the wrong spot.

 

[Cummins Thunder]

possibly re-check the pump timing, perhaps it's off.

VP pump= Timing is electronic.



CJ

 

[Rman]

There's a collar that must slide over the pump to link to the camshaft, if you install this backwards (which can be done) this is likely the scenario.



Oh and thanks for the update

 

[MCummings]

When I put a VP44 on once, I had the correct key, installed the correct way, but, when I started to torque down the nut, the gear was nut fully seated on the shaft, and I ended up ruining the key by having the gear ride up halfway on the key.



I blew up the motor very shortly after installing that pump, and I saw that the gear had missed aligning up with the key, and was off a few degree's.



My truck still ran fine, but my truck is a '98. 5, using a Cam and Crank sensor.





Just a thought.



Merrick

 

[cochrandc748]

Ok guys I was able to start taking the pump out tonight and first rotated the engine until the key was at 12 o clock. I started using the gear puller on the cam gear and i almost didnt even need it?!?!? I torqued the pump nut to spec when i put the pump back in the block so i dont know what gives. The bad part is apparently the key was not seated in its slot very well because as i was easing the pump out i noticed there was no key in the pump slot? I pulled off the timing cover and couldnt find the key anywhere. Is it possible that it didnt seat right when i first installed it and was just bareley in the slot andfell out when i pulled the cam gear back off the pump? Im going to run a magnet down in the pan tommorrow and see if its in there and still intact. The down side is I now dont know if it was installed backwards the first go round and causing the DTC's . Any advice guys. I have over 135,000 on the pump so i know im on borrowed time so should i just go ahead and replace it? sorry for such a long post but im about out of ideas and i know there areseveral of you guys out there that have a lot more experience than i do when it comes to the VP44.



thanks,

Dustin

 

[MCummings]

You've got the right idea's. Just keep on truckin'



Let us know. .



Merrick

 

[Cummins Thunder]

I pulled a VP and there wasn't a key in it... I instantly felt sick

Found it on the frame (or some other part down there).

Maybe this is what happened to you.

Good luck with your search



CJ

 

[KKlingbeil]

From what i have been told, as long as the gear that connects to the VP doesn't jump teeth, you dont need to worry about it, but im not the one to ask about where the gear is supposed to be to begin with, haven't got that deep in one yet. The best way i have found to line up the keyway, is put the keyway about where you think it should be, 12 o clock, but remember the pump doesn't bolt on straight up and down, it is rotated some. Get the holes of the pump to just sit on the studs, and then find a flash light and get your head kinna down in there and you can see with your eyes the key and the keyway, and then repeat until it is right.



About the gear coming off easy the second time, I noticed the same thing when i had to pull a pump off that was only on for about 4 hours. The computer was fried somehow, but yeah the gear came right off. Good luck finding the key, sounds like a real pain. .

 

[BradyWilliams]

You may have pushed the key out of the key way as you slid the pump into the engine. I hope it didn't drop into the engine. If it did and fell all the way to the pan, you might be ok? It would be better not to have it any where in the engine. The injection pump with 135,000 miles on it is not a cream puff at this point. The codes that you have, certainly seem to be pump related but I am not at work to look them up. You can look them up on the internet and that may help you decide what is going on. If you want to call me tomorrow I will look them up for you and I will help you any way I can. Thanks, Brady 1-800-955-0476

 

[Gary - K7GLD]

As far as getting the key in backwards, at least on my own spare VP-44, the key is stamped with both a # to match the pump, as well as an arrow that SHOULD point towards the pump when installed properly - pretty hard to not know which way it goes...



I've heard that some guys will actually Krazy Glue the key to the shaft to keep it in place - dunno about that one...

 

[KKlingbeil]

I've heard that some guys will actually Krazy Glue the key to the shaft to keep it in place - dunno about that one...

Sounds like an ok idea, as long as your just putting a very small amount. I think a very small amount of grease or vasoline would be a better option to try and get it to "stick" to the shaft.

 

[cochrandc748]

well guys a new VP should be here today. Ill post the results. The key on the other pump was fine so the VP bit the dust just sitting covered up in my shop! I guess i was just on borrowed time with the old pump having 135,000 on it so I cant complain.

 

[cochrandc748]

Well guys the truck is now up and running with a new VP and a non 53 block. It so nice to not have to add antifreeze anymore! Thanks for all the help and input with my problems. This forum alone is worth the price of membership. Oh yea and thanks to industrial injection for the fast service on the pump. Will definitely do business with them again.