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Unread 01-11-2010, 11:10 PM   #1
mgaither0
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1998 TJ Wrangler 
 
Join Date: Jun 2009
Location: Baltimore
Posts: 566
heater core flush help

so i read a lot of the write ups and info on here about the heater core flush and everyone kept talking about disconnecting the hoses the clip into the firewall and flushing them out. Now the way i understand it is if you are just trying to flush the heater core out that u are flushing the hoses out to in case there is gunk or whatever in them to. Then the next step would be to directly flush the heating core by putting the hose up to the fitting on the heater core in the fire wall and flushing that out directly? I'm making sure this is rite? any info or advice would be great. I had a hard time following some of the write ups. I;m only trying to flush the heater core. The water pump and radiator are only a few months old. I figure the heater core probably has crap in it from the old radiator. Help please on what to do?

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Unread 01-12-2010, 05:44 AM   #2
SkylinesSuck
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1998 TJ Wrangler 
 
Join Date: Nov 2009
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Disconnect the hoses near the from of the motor, not at the fire wall. Point one at the ground and stick the hose in the other. Turn on water. Switch hoses and repeat. Finished.
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Unread 01-12-2010, 06:36 PM   #3
mgaither0
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alright cool i'm going to do this in the next couple days
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Unread 01-12-2010, 07:18 PM   #4
Sgt.Fuzz
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Quote:
Originally Posted by SkylinesSuck View Post
Disconnect the hoses near the from of the motor, not at the fire wall. Point one at the ground and stick the hose in the other. Turn on water. Switch hoses and repeat. Finished.
I disconnected mine at the firewall and stuck the hose directly over the copper fittings sticking out of the firewall. It instantly shot out a bunch of brown gunk. After you're finished and hook the hoses back up, start the engine and let it warm up. Then check both hoses going to the heater core and make sure they're hot. The top one will be hotter than the bottom one. Personally, I had to flush mine more than once. I flushed it clean the first day and hooked everything back and my heat was only "warmish". I went back the next day and flushed it again and more brown gunk came out. After that I was good to go.
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