Blend Doors and Heater Core Flush Question - JeepForum.com

 
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post #1 of 7 Old 12-21-2011, 11:02 AM Thread Starter
dizzle247
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1999 WJ 
 
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Blend Doors and Heater Core Flush Question

According to the fault codes on my 99 WJ LTD, I know that the blend doors are having issues and need to be replaced. I plan on purchasing the heater treater kit when I have the extra $$$ in the next couple of weeks so that I can keep my dual climate zone option available.

In the meantime, can I flush my heater core to get rid of any gunk in it to possibly help make more heat in my jeep? Is this something that's a quick simple cheap fix that'll tide me over til the blend doors get replaced?

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post #2 of 7 Old 12-21-2011, 11:52 AM
TSyl
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Flushing the core may improve heat, but, the blend doors are what direct the flow.
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post #3 of 7 Old 12-21-2011, 11:58 AM
thisguyhasadd2
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i doubt it will work, the blend doors being stuck doesnt matter if the heater core is getting toasty. Hope you have the seat warmers!

2002 Overland - 4" rc -255/75/17/Jk Moabs
1982 Yamaha XT200J- dead, rebuild winter
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post #4 of 7 Old 12-21-2011, 12:09 PM
grancherkee
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check the 'relative 'hotness' of the heater core inlet and outlet pipes in the engine bay. If they are both equally hot your core is fine and you won't get any benefit from a flush. If outlet is cooler than inlet, do the flush.
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post #5 of 7 Old 12-21-2011, 12:15 PM Thread Starter
dizzle247
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Does anybody have a picture of where the hoses are on a 4.7 setup? I know where the hoses are on an I6 but no idea on the V8.
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post #6 of 7 Old 12-21-2011, 12:24 PM
TSyl
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Quote:
Originally Posted by dizzle247 View Post
Does anybody have a picture of where the hoses are on a 4.7 setup? I know where the hoses are on an I6 but no idea on the V8.
They are the two rubber hoses going through the firewall about where the glovebox is.
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post #7 of 7 Old 12-21-2011, 12:48 PM
thisguyhasadd2
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easy to see pita to get tool on

2002 Overland - 4" rc -255/75/17/Jk Moabs
1982 Yamaha XT200J- dead, rebuild winter
Colorado Jeep Club Member#259
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