Sorry to ask, I went through a search on water pump problems but could not find an answer for my problem. I am going to install the 4th water pump in my 2000 ram 2500 5.9l in 5 years and I drove it 30k miles ( has 132k miles ).
I tried 2 new pumps from the dealer ( it goes bad always after the 1 year warranty has expired ) - new and expensive - and one aftermarket. They all started to leak at the seal. This is what I did so far with this area of the truck: I changed the fan clutch (Napa auto), 3 belts went bad and the pulleys ( bad bearings ) were replaced. I had 3 heater cores replaced and the radiator replaced. All hoses are new.
I am having trouble figuring out this problem, I need your help. I suspect that the fan blades may be unbalanced but I have no clue how to check it.
Thank you for all answers.

 

Just a thought.

Other pulleys had bad bearings and the pumps die, maybe the belt tensioner is pulling to hard on the belt.

 

Yep, if you keep blowing out shaft seals then your belt is too tight or there's something wrong with the belt path.

 

did you check if theres too much pressure in the cooling system? if you have bad head gaskets the can let the pressure from the pistons go into the cooling system. that happen to me before. i blew hoses and seals all the time.

 

Hello, thank you for your reply. In 2006 I had the heads replaced - with 113k miles - both cracked, the timing chain was also going bad so we just did it, that is when I got the 2nd water pump from the dealer. The pressure is ok, but I will test it. So far I have had the usual problems with my truck. The transmission was rebuilt at 65k, the power steering pump broke 3 times and the steering box is leaking at the bottom seal. I like my truck, but I would not buy Dodge anymore.

 

are you the original owner of the truck? if you didnt, someone else might also have put a random pullie. wrong size.

 

Thank you for your reply. I am the 3rd owner, but we replaced all pulleys when we rebuilt the engine in 2006. With the snow today, I wish the truck was running - the 4x4 would come very handy.

 

Sounds like something is eating up the insides of your engine. 3 heater cores and 4 water pumps? Maybe try a zinc anode kit.
http://en.wikipedia.org/wiki/Sacrificial_anode
http://www.quadratec.com/products/17800_93.htm

 

What kind of antifreeze/coolant, and water do you use, and ratio(50/50?). I use Pestone and distilled water in my system. I had to change the original waterpump at 420,000 miles.

 

Hello;
thank you Purlpdodge, I will check on that problem and take a reading on the voltage leak into the radiator. Last time I checked was very low.