rigsbn8r

Hey guys,

I appreciate all the help the forum has provided in the past. Generally, I am able to search and figure out my problem. However, this time I still have some questions.

The specs on my truck:
2003 3500 Ram - SRW
All Stock
212,200 miles
Transmission replaced @ 200,000
Fuel Filter replaced @ 210,000


I haven't read any threads where someone is showing the same symptoms that I am getting, but I am leaning towards a bad lift pump. As the videos show, when I get on the throttle the truck gets up to speed without and hesitations but eventually the engine pulls back and it won't go any faster. This happens right around 70 mph. During both of the short clips I am giving it as much gas as I can. The video is a little shaky but you can see the tach start to "dance" back and forth.

Let me know if I can provide any more details.

Thanks for your help.

MikeyB

Did you have this issue before or after you changed the fuel filter?

Original canister mounted lift pump?

rigsbn8r

I don't recall having this issue before I changed the fuel filter this last go round. I don't get on the throttle a lot though; I just happened to be passing someone the other day and noticed it. It is the original fuel filter and lift pump setup.

Swapping out the fuel filter is pretty straight forward but I suppose I could have messed something up. I will double check it tomorrow.

Thanks.

MikeyB

Possibly you got some bad fuel and clogged the filter. I would change the filter to rule out that variable.

Also start looking seriously at replacing the lift pump. Especially with that many miles on it.

rigsbn8r

Will do. Is the FASS lift pump that is sold here on DTR the way to go to replace the stock pump? With the truck being all stock, I don't need anything overkill.

http://store.dieseltruckresource.com/2020fadidore.html

Thanks

soulezoo

First, pat yourself on the back for getting that many miles out of the original pump. You are an exception to the rule.

The FASS is a great pump, highly recommened. It is a little overkill and somewhat expensive. It allows for 2um filters to be used though and is much easier to install than---

option 2: the stock "in-tank" replacement. This is cheaper, "good-enough" for stock and a little more, but requires a fair amount of work and trouble to install. This is the factory replacement as Dodge recognized the inadequacy of the canister mounted pump and when they warranty replaced the pump, they went to the "in-tank".

There are other options, the FASS is a good one though.
Hope that helps!

NJMurvin

When my lift pump died, the symptoms were:

1) Engine died in the middle of a left hand turn in traffic. Luckily I was able to coast to a safe place by the curb.

2) Engine would restart but die within a few seconds.

I had it towed to the dealer only a few blocks away. They confirmed the lift pump and I had them replace it with the in-tank pump (the only option they offered). It was way past warranty and expensive, but it works fine now. If doing it over again, I'd probably go the route of a system with added filtration.

rigsbn8r

Thanks for the response. Symptoms similar to what you experienced is a majority of what I found when researching the problem. Of course it is my luck that my truck is doing something totally different from the norm.

I ordered the FASS pump yesterday and it showed up today. I'll do the install this weekend and post up the results.