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Unread 08-25-2013, 01:46 PM   #1
kawegit
Registered User
1996 ZJ 
 
Join Date: Jul 2013
Location: Prescott, Arizona
Posts: 12
Radiator Leak 96 ZJ 4L

So I got this 96 ZJ limited 4.0L and I am not sure where this coolant leak is coming from. I have heard that a pretty typical problem is the metal on plastic construction causing people to replace the radiator with a better, all metal radiator. The leak is significant, losing about 1/4 to 1/2" of fluid in the reservoir whenever I drive it 10 or so miles. I have searched and the leak appears to be coming from the radiator itself as the only place I can see it is beneath the radiator from the center to passenger side, where it pools on the lip of metal behind the bumper and then drips to the ground. All the hoses are dry and the service receipts in the glove box show they have all been replaced about 20k miles ago. Does this sound like the need for a new radiator? I'll try to get some pics but it is hard to see as the only place fluid is really visible is beneath the radiator. Also, there is some discoloration, sort of a "whitening", on the upper passenger side of the core. Is this corrosion?

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Unread 08-25-2013, 02:12 PM   #2
Oldfrog
Web Wheeler
1997 ZJ 
 
Join Date: Feb 2008
Location: Louisiana/Texas
Posts: 4,030
Probably. Drive it, to get up to operating temp, then kill it, pop the hood and take an LED flashlight to help see the leak while it's still under pressure. If you still have the original radiator, you have been lucky. Replace it. They arent expensive.
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Unread 08-25-2013, 04:05 PM   #3
shaban
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1996 ZJ 
 
Join Date: May 2012
Location: Yarraville, VIC, AU
Posts: 453
And by the way, beware, there are all-metal chinese radiators made by Silla, they're cheap (around $140) and generally OK but require a fair bit of hacking to install.
I had to cut my fan shroud to make it fit.
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Unread 08-25-2013, 05:31 PM   #4
kawegit
Registered User
1996 ZJ 
 
Join Date: Jul 2013
Location: Prescott, Arizona
Posts: 12
Looking at a csf all metal. I haven't seen any bad reviews on them at it seems a reasonably priced upgrade.
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Unread 08-26-2013, 08:15 AM   #5
Octotat
Registered User
1995 ZJ 
 
Join Date: Oct 2012
Location: Chattanooga, TN
Posts: 60
Quote:
Originally Posted by shaban View Post
And by the way, beware, there are all-metal chinese radiators made by Silla, they're cheap (around $140) and generally OK but require a fair bit of hacking to install.
I had to cut my fan shroud to make it fit.
I had the same exact kind of leak and never could find it. I put in this Silla radiator and it's worked great! But like this post mentions, you will have to cut some of the fan shroud away.
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Unread 08-26-2013, 08:39 AM   #6
AVR2
Web Wheeler
1993 ZJ 
 
Join Date: Apr 2007
Location: UK
Posts: 2,360
I have a stock-type replacement rad from Silla, bought through Radiator Express. It dropped straight in and has been working fine for the last year. The only issue was sourcing my own fitting for the trans cooler pressure line; there were a handful of fittings included with the rad, but none were right for my application.
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