I got nominated to do the injector pump on the companies 99 5spd truck. I test drove it, it seems to be ok at initial throttle but really goes flat in a hurry and isnt really reving normal past 2400. On occation it will die out and then take back off, but the power always seems low.

Dodge said the injector pump was bad and the MAP sensor needed replacing. I ran the codes all I got was 1963. I see on the side of the pump looks like a schrader valve, its this the correct port to check lift pump pressure? If so what should I read at idle? Also, what is the normal boost on these trucks?

Finally, Any tips or special tools on swapping the pump? I did the pump on my 93, but this ones a bit different. Does this pump need to be pinned or aligned when R&Ring the pump?

Thanks in advance.

Wallace

 

http://www.nwbombers.com/membersites/kent/vp44.html

You can check the pressure on top of the fuel filter canister on the 99's. Usually, you want to have 12-14 psi at idle and no less than 6 WOT.

 

Do you mean a 1693 DTC? That is a companion code stored in the PCM that is letting you know there is another code in the ECM that you cannot retrieve without a DRB scanner like what the dealers have. The 0216 is the typical VP death code.....if you are not getting that code, the VP may not be to blame. What caused the dealer to think the VP was on the way out? Typical peak boost should be around 20 psi.

 

The boss ran it in the dealer and it had the 0216 code and a code for a bad MAP sensor. I checked fuel pressure it was 16 psi at idle, so that is good. I just got a pump at his request and he nominated me to do the install.

BTW, is it necessary to pull the fan shroud to pop the shaft from the gear? Lastly, from what I read I can take the pump shaft nut off, bar the engine over until the keyway faces straight up, and as long as the pump shaft goes in the same way all is good, correct?

thanks again,

 

no need to remove the shroud definte on the 12 o'clock pump key position, but becareful reinstalling the pump and timing key, the directions of putting 10-12 ftlbs on the nut then tightening down the pump bolts then full 125 ft lb torque to the nut must be followed to eliminate damge to pump parts. Take your time to ensure the pin is in the notch, should be about a 1 1/2 job give or take depending on ability.

Happy wrenching

 

Job is done, truck is smooth but gutless. Its real flat in 1st and 2nd, then at 2400 rpm in third it feels much better it just kicks it up all of a sudden. Theres a Quadzilla 60 h.p. module in it, but it feels like a -60 h.p. I still need to replace the MAP sensor, Dodge said it stored a code for that. What I was wondering is if the wastegate might be stuck in a open position, anyone had that happen? Seriously this truck is a turd. Need ideas.

 

If the wastegate was stuck open you would definetly know it. Your EGTs would be hotter than normal. You would have low boost, more smoke out the tailpipe. And it would be gutless in all gears.

 

Its a company truck, no gauges, feels like very low boost, and little smoke.

I pulled the wastegate line to the turbo and the truck runs much better, but still not right, it falls off at 2400-2500 pretty noticeably. The injectors have I believe 320K on them, I wonder if they are tired as well. What can be done to get this truck running good for little money. The only mod is the Quadzilla 60h.p. module. It has to be cheap as the boss is well.....cheap!

 

Lets see what I remember what you said. The gutless part is (partly maybe).
The APPS needs to be reset.
If the APPS needs to be reset often( mine needs to be reset every 5 weeks and took about 8 times to stay reset) please PM me for am developing some theories on it.
Leave it in gear turn key to start and slowly advance the throttle, slowly release the throttle turn key to off.
Do this 3 times.
Leave the engine off for over a minute.
Start the truck normally.If it has better power you have done the reset.
If the engine isn't better you have another problem that is electrical in nature and I will elaborate on if you like if you PM me.
At that kind of milage or km's better get the injectors tested (pop tested) They should pop around 4500 PSI.( mine were between 2600 to 4100 and bad at ???200,000 km's the bigger 275's improed the milage 16.8 to 22.????? with the vanaken box on.
Does your engine idle smoothly???????
sorry what else did I miss?????

 

The engine does idle smooth and revs smooth. I disconnected the pressure line to the wastegate and it is noticeable better and reached 19 psi, but still is very linear in the power delivery. The boost isnt very quick to get there, so its gotta be a fuel delivery issue. Also, Dodge said the computer said the MAP was bad, so I'll snag one Monday.

I'll try the APPS prucedure you described, do I need to pull the battery to clear the stored codes at all?