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Old 11-16-2011, 01:52 PM   #1
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NEED HELP!! 93 Wrangler heater core

So I just put a new radiator and heater core in my 93 Wrangler YJ 2.5. I took the nuts off of the battery holder, took out the battery and unhooked the heater box assembly. I reconnected the heater hoses, filled the radiator and started it up. Now when I turn the heater on, antifreeze leaks from down behind my heater box down onto the floor. How can this be? The only way antifreeze gets into the heater core is by that one hose and that one hose does not appear to be leaking. The heater core I installed did not appear to have any damage....any suggestions???

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Old 11-16-2011, 02:04 PM   #2
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There's 2 hoses, a feed and a return. You have both hooked up, right?

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Old 11-16-2011, 02:07 PM   #3
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Also, 2 outlets on the heater core that go through the firewall. If you have both hoses hooked up, they would show a leak on the engine side of the firewall. Heater core itself is on the cockpit side of the firewall.
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Old 11-23-2011, 05:04 PM   #4
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I got it all figured out...What I didnt realize was that a portion of the end of the heater core was still stuck inside the hose. when I put the hose onto the new heater core it wasnt seating correctly. Glad to finally have heat; Vermont gets pretty damn cold!!
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