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Old 09-08-2009, 11:47 AM   #1
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Radiator and waterpump R&R

Iíve been having trouble with overheating, in my í99 TJ. After putting in a new thermostat, I was still having problems, so I decided to replace my radiator. Got one from the Radiator Barn as per the advice in this thread. http://www.wranglerforum.com/f5/scho...ors-35052.html

Here are the before pictures, showing the rust and seepage that may have contributed to the overheating.

Rust splatter on the hood.

You can see the coolant seeping from the upper hose.

Itís had a slight leak here, since I got the jeep but it wasnít bad enough to worry about.

First I drained the fluids and disconnected the radiator hoses.


Took off the overflow bucket. (We should have flushed it better when we flushed the radiator a couple of months ago. LOL)

Next came the fan shroud and fan. Boy was that a pain to get out.

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Old 09-08-2009, 11:50 AM   #2
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Continued...

Pulled out the old radiator. It was kind of a mess but I guess that’s to be expected.

While I was in there, I decided to replace the belt and water pump too. The old belt was looking kinda worn. I'm keeping the old belt as a spare. It’s amazing how much more room there is to work that way. The only hard part was that I had to loosen the power steering pump, almost all the way, to get the water pump out.

I put Skeeter to work scraping off the old W/P gasket while I swapped the W/P bolts.


The old water pump was really pitted. Does anyone know why? Is that common?

Gooped up the new gasket and put the new water pump in, then the new belt.

Then came the new radiator, all boxed up, nice and neat.

Oooooh, shiny!

Putting it in.

Installed new hoses, replaced fan and fan shroud, reinstalled the overflow bucket, tightened the belt and filled up the radiator with coolant.
Wooohooo, nothing leaked!
Here it is all done.


All in all, not bad for about 3 1/2 hours work.

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Old 09-08-2009, 11:12 PM   #3
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The pitting can be caused by a couple of things...1) electrolisis which can be caused by bad grounds and other things drawing a blank on the other things. 2)Wrong coolant mixture, usually too much water which causes corrosion. By what came out of your overflow bottle I'm leaning towards the coolant mixture and/ or you didn't get all the flush out.
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Old 09-09-2009, 09:24 AM   #4
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Thanks for the info. I usually just use the 50/50 pre-mixed coolant. When we flushed it, we just used water, then filled it with 50/50 coolant. The stuff that came out of the overflow was rust. Skeeter tested the freeze protection last fall and it showed good so we didn't bother changing it out before winter. Apparently the rust inhibitor failed sometime over the winter and things got pretty ugly.
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Old 09-09-2009, 10:06 AM   #5
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Nice job. You did spoil the new radiator with distilled water, correct?
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Old 09-09-2009, 10:21 AM   #6
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Quote:
Originally Posted by coolbreeze View Post
Nice job. You did spoil the new radiator with distilled water, correct?
Nope, I just filled it with new pre-mixed coolant.

It's running great. I took my jeep on a 3 1/2 hour drive, mostly on the freeway, and used the A/C. The gauge stayed at just below 210 the whole time.
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Old 09-09-2009, 10:39 AM   #7
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Pre-mix, gotcha.
Does your windshield cleaner jump out of the container when its full? Mine does. Just wondering if its just mine or a Jeep thing.
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Old 09-09-2009, 12:39 PM   #8
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Nope, that doesn't happen to my jeep. Maybe check to make sure the cap is on tight, on the windshield cleaner jug?

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