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Old 06-01-2013, 10:12 AM   #1
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2004 TJ Rubicon Water Pump - What else to replace?

I've diagnosed a leaking water pump, what else should I replace while I'm in there?

126k mileage, I just purchased a month ago, been changing all the fluids and they really needed to be changed - I'm questioning how well things were maintained over the last few years.

Thinking for sure thermostat, maybe serpentine belt, any other suggestions? (maybe additional seals, etc?)

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Old 06-01-2013, 10:29 AM   #2
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I'd do the belt, thermostat and do a good flush and refill of the whole cooling system including heater core.
Wouldn't hurt to make sure the idler pulleys spin nice and smoothly...

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Old 06-01-2013, 10:37 AM   #3
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I'd do your hoses also. If your radiator looks worn I'd replace that too.
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Old 06-01-2013, 11:13 AM   #4
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Thanks, pump, thermostat, belt ordered, I'll check on idler pulleys
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Old 06-01-2013, 11:19 AM   #5
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Ya I would recommend doing a whole cooling system rebuild. I just finished mine and it took a year to eventually do the whole thing. It would be wise to just get it done all at once, it's less work and money.
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Old 06-01-2013, 11:42 AM   #6
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What motor do you have in it?
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Old 06-01-2013, 11:58 AM   #7
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Quote:
Originally Posted by Gofast View Post
What motor do you have in it?
It's a rubi so the 4.0...
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Old 06-01-2013, 12:01 PM   #8
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Sorry about that didn't see rubicon till I already hit post.
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Old 06-01-2013, 01:14 PM   #9
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I replaced the water pump, the upper and lower radiator hoses, thermostat, both heater hoses. I also flushed out the core,


After replacing and refilling with coolant, noticed my radiator leaking at the seams. Then came a replacement aluminum radiator, a new radiator cap, And finished with a new fan and a new fan clutch (while I was there!).

There are a lot of people who have replaced the water pump and then had to replace the radiator. All runs great now.
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Old 06-01-2013, 02:19 PM   #10
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Then there are people like me who have 243k on all the original hoses and radiator... you never know.
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Old 06-01-2013, 02:20 PM   #11
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Hopefully you are installing an OE/Mopar water pump. Many aftermarket water pumps like those pushed by Autozone are cheap, shoddily constructed, and aren't worth the effort to install.

At the same time I would install a new 195 degree thermostat (NOT a fail-safe type), upper/lower hoses, and new serpentine belt. Keep the old serpentine belt and hoses in the back as spares.
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Old 06-01-2013, 03:22 PM   #12
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Thanks for all the advice, mopar water pump, thermostat, idler pulley being shipped from jeep dealer in NC (good prices). I just put in a new aluminum radiator and the hoses look great
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Old 06-01-2013, 03:24 PM   #13
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Hit post too fast, belt on the way as well... I'm on the fence with the hoses, may just replace them and put the old hoses and belt in a trail box... You never know they could be of use.

Thanks again for the advice
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Old 06-01-2013, 03:34 PM   #14
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With 126k miles on them, it's time to get off the fence and replace both hoses.
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Old 06-01-2013, 05:56 PM   #15
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Distilled water. Use it and be happy many years from now.

And honestly if your going through all the trouble.....get a new fan clutch.
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Old 06-01-2013, 06:13 PM   #16
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X2 on using ONLY distilled water to mix with the coolant. Tap water usually has a high concentration of dissolved hard water deposits which will eventually clog up a radiator & cooling system. Zerex G-05 is a good choice for fresh coolant, flush all the old coolant out first since not all coolants are compatible with each other.
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Old 06-01-2013, 09:42 PM   #17
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Roger that on the flush, G-05 coolant, distilled water, and new hoses.

Thanks again for all the advice, looking forward to a little quality wrenching time next weekend
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Old 06-08-2013, 09:46 PM   #18
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Did the job without any problems, thanks again to everyone for all the advice.

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