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Old Apr 06, 2010, 05:45 PM
Balsa is for doll houses
Skrogg's Avatar
Texas, San Antonio
Joined Aug 2004
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Question
Jeep water pump

I've never seen a pump fail in this fashion. bearings and seal were fine, what causes something like this?
This came out of a 2000 jeep Cherokee. I was too busy to fix it myself and the 700 dollar repair bill reminded me why I should have found time.
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Old Apr 06, 2010, 05:56 PM
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As the "go to" problem solver of most of my friends who own cars , ive seen that a couple of times . How often was the antifreeze flushed in that jeep ? after a few years circulating around the same ole rusty cooling jacket , the antifreeze picks up all kinds of corrosives . Those corrosives then go happily to work , eating things like your waterpump impeller . Oh yea , and dont be surprised to find your freeze plugs are next up to rot out . Pretty much anything ferrous metal wise doesnt fare to well under such assault
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Old Apr 06, 2010, 06:03 PM
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Probably a combination of poor materials combined with acidic coolant.You realize that all that metal, that once made up that pump impeller, went somewhere.
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Old Apr 06, 2010, 06:25 PM
Balsa is for doll houses
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Texas, San Antonio
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It came out of my girlfriends jeep , we have only been dating a few months so I have no idea on the history of it. I did have the shop flush the cooling system and do a pressure test.
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Old Apr 06, 2010, 06:25 PM
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It's likely a cavitation problem. Is the impellor the plastic one or metal, hard to tell from that picture. The coolant doesn't have to look bad to be bad. How many miles?
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Old Apr 06, 2010, 06:33 PM
Balsa is for doll houses
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Texas, San Antonio
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Originally Posted by Wrench View Post
It's likely a cavitation problem. Is the impellor the plastic one or metal, hard to tell from that picture. The coolant doesn't have to look bad to be bad. How many miles?
I'm guessing around 160k, and it WAS metal. If i didn't know any better I would say it was a flood car.
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Old Apr 06, 2010, 06:43 PM
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I had a Ranger with a 3liter that developted a hole between the water pump and the motor block mixing water and oil. That was a heafty bill. Never ran right after that. Dumped it (sold) for what it cost for the repair. Darn shame...liked that truck. (about 130k)
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Old Apr 06, 2010, 07:42 PM
56S
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Many coolants contain silica. I'm told it's an abrasive to keep the system clean, polish the ceramic WP seal.....And eat impellors. Even though my vehicles have "permanent" anti-freeze, I still change it every two years. Brake fluid too. Look for a reputable brand listed as all makes/all models. My Honda MC has a rubberish WP seal and would erode away rather quickly if I used the wrong type of antifreeze.
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Old Apr 06, 2010, 08:40 PM
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There is no "All Makes, All Models" antifreeze. Yes they make some they call that but it's not true. Use what the OE put in it from the factory.

There are over a dozen different antifreeze now, High Oat Low Oat, Silicate free and Sillicate. Never use the all makes crap.

160k on that waterpump is far longer that they normally last.
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Old Apr 06, 2010, 08:57 PM
Balsa is for doll houses
Skrogg's Avatar
Texas, San Antonio
Joined Aug 2004
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man, this is wild. I never put any thought into anti freeze. i just grab the 50/50 stuff that's cheap. I think its just a bunk design, doing some reading in 2001 they went back to a belt driven fan on that model. and was 1 recall for the fans exploding.
the shop i had work on it replaced the fan relay because her fan wasn't coming on.
kinda bummed for the money i spent i could have gone with an after market fan and deleted the relay.
I think its time this truck goes bye bye.
http://redirectingat.com/?id=252X400...h_located.html
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Old Apr 07, 2010, 05:21 AM
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Just thought I'd cheer you up
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Old Apr 07, 2010, 08:25 AM
Avoid The Ground!
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Just thought I'd cheer you up

OMG..nice........helmet......
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Old Apr 07, 2010, 08:30 AM
Don't look at me like that....
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United States, AR, McDougal
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It came out of my girlfriends jeep , we have only been dating a few months so I have no idea on the history of it. I did have the shop flush the cooling system and do a pressure test.
So why did you have to pay for it ?
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Old Apr 07, 2010, 08:40 AM
Avoid The Ground!
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So why did you have to pay for it ?
Obama has not effected Car Care ...yet.. so you don't have to pay for it.
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Old Apr 07, 2010, 12:08 PM
Not THAT Ira
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What init4fun said.

I would no longer trust that motor without pulling the freeze plugs. You should get an eye full after pulling the first one. I'll bet behind it will be a solid plug of rust sludge.
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