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Old 02-21-2008, 12:11 PM   #1
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Angry loosing coolant

Hi everyone, I love my 2000,Jeep Wrangler. However it holds a couple of mysteries that I haven't figured out yet and hope to hear from anyone thar can relate and or have some ideas on solutions to my dilema..
1, Can't figure out where my radiator coolant is going. It is not in my oil and not on the ground from what I can tell.

2. fluctuating oil pressure from between 20-50 psi, hot or cold.

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Old 02-21-2008, 03:08 PM   #2
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Hi there, welcome to the board. I have moved your post to the TJ section in hopes of garnering you better responses.

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Old 02-21-2008, 04:08 PM   #3
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Your water pump is going bad, probably, it comes out the weep hole under the water pump nose when it does start to go. If you stick your fingers under there WITH THE ENGINE OFF AND THE IGNITION KEY IN YOUR POCKET, feel around for a small hole, about an 1/8 or 1/16 " hole it's on the bottom of the pumps nose.
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Old 02-21-2008, 04:53 PM   #4
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I had the same concern, turned out to be the water pump....seems the original one had a plastic impeller, dealer said it was weak link in the 04' 4.0's, replacement pump has the steel impeller. Be sure when you change the pump to use hoat coolant & distilled water. If the radiator & heater hoses are original now would be an excellent time to replace them along with the thermostat.
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Old 02-21-2008, 06:12 PM   #5
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I had the same issue and it was the water pump that went bad. Dealer replaced it for free but that was last year so you may be out of luck but try to see if they'll cover it.
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