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Unread 08-04-2005, 05:34 PM   #1
m_w_m
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engine coolant overflowing

This is the second time this has happned to me. I tried searching for an hour and came up with nothing. I drove my cherokee 1990 2 dr for about 50km and i parked in a gas station to go buy something and i came out and my coolant bottle overflows and it poors out coolant everywhere! Whats going on?

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1990 2 door red cherokee larado
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31" MT's
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Unread 08-04-2005, 05:42 PM   #2
tangofox007
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Coolant bottles are prone to cracking. And they warp so that the cap fails to seal completely. And the cap gaskets leak. Or you could have a more serious problem. There is a pressure relief valve in the cap, so it could have been a genuine overheat condition. But I would start by checking the bottle and cap for crack/leaks.
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Unread 08-04-2005, 05:47 PM   #3
m_w_m
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I cant screw the cap on very tight at all i just do it finger tight and when i over tighen it a little bit it comes loose like its striped or something. should i be able to crank it real nice and tight?
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Unread 08-04-2005, 05:47 PM   #4
coppertop71
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Heres a link for a suggested idea to getting rid of that tank. You can see my pic's and see my solution.

Cherokee America
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2006 Jeep Wrangler X, 4.0 4:11 gears

'90 Cherokee XJ,W/'91 4.0L reman/ 3.5" RE lift, W/31" M/S tires, 4:11 Gears W/Speedo gear change/ Aluminum Coolant Tank
A/C Conversion/Home Built Roof Rack/K&N Box Filter
Derale 15" Rigid Radiator Fan PT# DER-17415, through Summit W/2"X5/8X5/8"" spacer

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Unread 08-04-2005, 05:58 PM   #5
tangofox007
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Quote:
Originally Posted by m_w_m
I cant screw the cap on very tight at all i just do it finger tight and when i over tighen it a little bit it comes loose like its striped or something. should i be able to crank it real nice and tight?
Yes, the cap should go on fairly tight. But not too tight or the gasket will spread. Sounds like it's time for a new cap and bottle. I just had the same problem on my '88. A new cap/bottle solved the problem. I am now on bottle #4 since new. The first two cracked.
You can find the cap/bottle online for as little as $20 US. Check www.rockauto.com or Ebay.
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Unread 08-04-2005, 06:10 PM   #6
m_w_m
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My friends parting out his 88 so ill grab his off him
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31" MT's
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Unread 08-04-2005, 06:19 PM   #7
m_w_m
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Thanks for all the replys too
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