98 5.2L ZJ Mysterious Coolant Leak - JeepForum.com
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Unread 01-25-2014, 11:12 AM   #1
scooterb57
Registered User
1998 ZJ 
 
Join Date: Aug 2013
Location: Atlanta, Georgia
Posts: 37
98 5.2L ZJ Mysterious Coolant Leak

Ok so I discovered a while ago that my coolant reservoir was mysteriously loosing coolant very quickly. (This began to happen after it got very cold one night and the jeep was outside, im not sure if that had anything to do with it.) I found out that there was some sort of leak on the drivers side of the radiator, and today I took the fan and shroud out to get a better look at what was going on.

After I took out the fan and shroud I started it up and let it get hot, then shut it off to see if I could find a fresh coolant puddles. After a few minutes of being off I noticed there was some coolant accumulating under this thing:





I've been browsing for awhile trying to figure out what this thing is, but I guess Im just not that good at searching. Can someone please help me identify this and just give their opinions on the whole leak situation in general?

Thanks in advance.

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Unread 01-25-2014, 11:24 AM   #2
PolkaPower
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1998 ZJ 
 
Join Date: Aug 2011
Location: The Abyss, Italy
Posts: 16,502
It's the radiator drain plug. You can go get one at the autoparts store or order one from rock auto IF that is the real problem. I had a leak like that on mine and replaced the plug and it continued to leak. I took off the top of the metal radiator guard and found that there was a long crack on that side of the radiator that was leaking down where that plug is.
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Unread 01-25-2014, 11:54 AM   #3
scooterb57
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1998 ZJ 
 
Join Date: Aug 2013
Location: Atlanta, Georgia
Posts: 37
Quote:
Originally Posted by PolkaPower
It's the radiator drain plug. You can go get one at the autoparts store or order one from rock auto IF that is the real problem. I had a leak like that on mine and replaced the plug and it continued to leak. I took off the top of the metal radiator guard and found that there was a long crack on that side of the radiator that was leaking down where that plug is.
Thanks, is there an easy way to see if there is a crack on the side of the radiator? Or do I just have to take it out?
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Unread 01-25-2014, 01:50 PM   #4
PolkaPower
Registered User
1998 ZJ 
 
Join Date: Aug 2011
Location: The Abyss, Italy
Posts: 16,502
I didn't take the radiator out. I just looked for the crack.
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Tags
coolant , leak , radiator , zj

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