Have a 2000 Ram 2500 with 5.9L 5 spd with 68,000miles.

Recently was driving and all the sudden it felt like I had no power.  I could step on it and it just stayed same RPM would barely increase.  Then the next morning coming to work it was doing the same thing but right as i finished up the 12mile drive boom all the power was back and was acting normal.  Now it does this from time to time, not always and sometimes it will get weird surges where the power comes and goes.  Anyone else experienced this?

I put a new fuel filter in back in the springtime.  Just running thru my mind what it could be I've come up with a few thoughts.   Water in the fuel?  A lot of debris came loose from fuel tank for some reason and clogged up the filter?  Low Pressure fuel  pump going out? High pressure pump failing?  Injectors going out?

I'm leaning towards something with the high pressure side of things (/cringe) is going out.

It's weird because some days I can drive to and from work 24miles total and it shows no signs and other days it does.

After the problem started I let the current tank get down to almost empty put 25 gallons along with some Cetane boost/injector cleaner which of course didn't help.  Another week or so and I will have to fill up again and maybe if there was a water problem this 2nd fillup will have diluted it enough to matter?

And if I did have a major water in fuel issue should I put a new fuel filter in?

Truck has been trouble free since purchased (2nd owner) and gets 25MPG on the interstate with A/C running doing 70MPH and 19 City (17pulling 4000lb boat)  

im guessing ur 5.9 is the cummins diesel?  

Geo450racer:
im guessing ur 5.9 is the cummins diesel?

Its a diesel if you read it. My first attack here would be fuel. Diesel is known to have problem with fuel in water at times and sometimes you can get a slug of it especially if you buy at cheapest place possible. I would assume it is water and check filter for signs of it and if so, replace it. Unlike a gas motor, you really need to check your fuel filter for water a  often and change regularly.  A friend of mine has had his 05 Dmax brought to its knees twice by water in fuel. He has since stopped buying it discounted and pays a bit more and buys major brand's. He has not had any trouble since.  

Thanks for the replies, I will be changing out the fuel filter this weekend.  Also had some people recommend adding an extra water trap filter in addition to the fuel filter.  

rangband:
Thanks for the replies, I will be changing out the fuel filter this weekend.  Also had some people recommend adding an extra water trap filter in addition to the fuel filter.

Extra trap is not a bad idea but spending a few pennies more for major fuel brand might be a better long term solution.  

I guess i'm out of touch, what are considered major brands?  Problem didn't show up until right after the prices dropped so much recently I filled up with $4.29 diesel from BP.  Typically over the past year I had been using non major brand B20 Biodiesel from local Midnite Oil Co.  (they have 8-10 stations around the area and are the only ones to offer Biodiesel)  

Water in diesel fuel is kinda a funny thing in that it does not bid to diesel the way it can to gas sometimes (gas can have additives that can bind to water and gas like alcohol for one) so water does not tend to accumulate in tank. While with diesel it tends to stay separated as a water slug or slugs in tank until the get big enough and get sucked up by pump and ingested. You may of had water building up for a while that reached critical mass. This is also a good time of year to pick up water in fuel in your tank and storage before sale because on higher humidity this time of year can cause condensation to form in tanks as the "breath" humid air and the temperature varies (hot humid to cool which forces air to release moisture) Above ground storage and vehicle fuel tanks are most susceptible to this and below ground the less susceptible. Keeping you fuel tank full can minimize the effects of this too.  

i have a 2000 dodge 1500 with a 318 and it has a 3 in suspension lift and 2 in leving kit with 36 in tires and when i am driving there is a lot of slack in the steering wheel could some one plz tell me how to tighten it up.  

Two things, look for play in steering linkages and bushings and those large tries and lift place fat more strain on steering than it was designed to handle and it will shorten its life span and also cause frame under steering box to flex more as you steering making it feel less positive. Also if alignment is off it can make steering less responsive.