Just did my 6th water pump in the last 3 years - Page 2 - JeepForum.com
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post #16 of 22 Old 04-29-2013, 07:55 AM
KoreaZJ
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My original stock pump lasted about 65K, same for the first Flowkooler. On my second Flowkooler now, better cooling.


Did you use the correct gasket combination?



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post #17 of 22 Old 04-29-2013, 12:09 PM Thread Starter
HighLonesome
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Quote:
Originally Posted by KoreaZJ View Post
My original stock pump lasted about 65K, same for the first Flowkooler. On my second Flowkooler now, better cooling.


Did you use the correct gasket combination?

I used one gasket and it turns freely. Used one gasket on the last Flowkooler and there was no sign of any impeller interference.
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post #18 of 22 Old 04-29-2013, 04:06 PM
coralman
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I feel your pain HL. I went through four in less time. I've got a mopar on there now. If it craps I'm thinking about the hesco pump. That is if a wire reinforced lower hose is even still available.

Info on projects and repairs categorized by system
http://www.jeepforum.com/forum/f13/c...-faqs-2863665/

Originally Posted by HighLonesome
lol...if life is as a simple as a 5.9 making you happy, I'd say go ahead and buy it on impulse. ZJs are the way of Zen. Wax on, wax off
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post #19 of 22 Old 05-14-2013, 12:38 PM
jeepjeep523
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I got about 80k out of my first one. Found out by coming home from school one day and seeing antifreeze all over the driveway. New bosch one has about 16k on it.
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post #20 of 22 Old 05-14-2013, 01:07 PM
zjosh93
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I'd say check your belt tension but IMS the 5.9 has a spring loaded tensioner.

In my experience the second leading cause of bad water pumps is stray current through your cooling system. Had this happen on my mom's old car. Went through a water pump per year after we swapped a rebuilt motor into it. Checked all the grounds and they looked fine. Added another ground from a braket near the water pump to the battery negative and stopped eating pumps. Her terrible battery terminal corrosion problem went away too.

You can check with a multimeter. Put the negative probe on the negative battery terminal, take off the radiator cap (cold), start the engine, put the positive probe in the coolant without touching anything metal. I believe anything over 0.7 volts is bad.

I had really bad corrosion on my ZJ's positive battery terminal and I went through two water pumps in about three years. I checked the coolant and was over 0.7 volts. Replaced the negative terminal, the lugs on the negative cables, cleaned the ground to the fender and block. Corrosion gone and still on the same pump.

Just my personal experience.
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post #21 of 22 Old 05-14-2013, 01:26 PM
Candymancan
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odd im still on my gmb brand pump going 2 years now in a few months... it leaked out the weep hole very slowely for a bit but its been fine since... perhaps try a diff brand instead of going 3 times with the same two brands

2013 6.2 V8 Camaro SS 30k
98 5.9 V8 ZJ 180k
98 4.0 I6 ZJ 240k
90 5.9 SJ Grand Wagoneer 110k
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post #22 of 22 Old 05-14-2013, 04:27 PM
coralman
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Was why I asked about pitting.

Info on projects and repairs categorized by system
http://www.jeepforum.com/forum/f13/c...-faqs-2863665/

Originally Posted by HighLonesome
lol...if life is as a simple as a 5.9 making you happy, I'd say go ahead and buy it on impulse. ZJs are the way of Zen. Wax on, wax off
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