On a trip last week I had my cruse set at about 75 MPH and going along great when my truck bucked twice or cut out very fast and hard then it was fine for the rest of that part the trip. It repeated on the way back and fine after that. Do I have a problem that anyone is aware of?

 

You should fill in your signaure (in "user cp") this way everyone will know what kind/year truck you are asking about.

Any codes?

 

Will take care of that. I have a 2001 ram 2500 diesel automatic 4X4.

 

You need to check for codes. There are instructions in the tech facts section up top there.
Basically, cycle your ke (on, off, on, off, on) not start, on. The codes, if any will display in the odometer window followed by "p-done".

Ever had your lift pump replaced?

 

No code and I have not replaced the lift pump. I have 73000 miles on the truck.

 

Someone else will chime in here with more experience. Could be a APPS problem or something else electrical.

 

Did you actually see "P-done" in the odometer display? Because I'm not so sure you wouldn't get any codes after your incident.

Mileage means absolutely nothing when it comes to LP's.....if you think the LP is in question, did you check for fuel pressure? Do you have a fuel pressure gauge? (You should!)

 

I have 8,000 on my new one, it "fluttered" the other day down to 7 psi for no good reason. Shut the truck off, fired it back up and she ran fine from 12.5 to 15 psi the rest of the day.
They're crap.

 

Sounds like a dead pump to me!


Merrick

 

There are no codes just _ _ _ _ and then P-done. It starts very easy and fast and runs smooth and pleanty of go.

 

Change your fuel filter and wait for it to happen again. Could be fuel related. Give it a good shot of fuel treatment as well. Don't look back

 

This is a good sign.
As stated be kind to your fuel system, regular filter changes and your choice of additive for lubricity.

 

Me too. Lift pump and/or more likely an injection pump (VP44).

I lost a VP44 at only 40K miles with perfect fuel pressure all along.

jh