Blend Doors and Heater Core Flush Question - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Grand Cherokee & Commander Forums > WJ Grand Cherokee Forum > Blend Doors and Heater Core Flush Question

~Artec JK 1 TON SWAP~** FALL SALE on all Jeep Optic Armor Windshields **Introducing MONSTALINER™ UV Permanent DIY Roll On Bed Line

Reply
Unread 12-21-2011, 11:02 AM   #1
dizzle247
Registered User
1999 WJ 
 
Join Date: Apr 2011
Location: Newcastle, WA
Posts: 184
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?

dizzle247 is offline   Reply With Quote
Unread 12-21-2011, 11:52 AM   #2
TSyl
Registered User
2001 WJ 
 
Join Date: Apr 2009
Location: Highlands Ranch, CO
Posts: 413
Flushing the core may improve heat, but, the blend doors are what direct the flow.
TSyl is offline   Reply With Quote
Unread 12-21-2011, 11:58 AM   #3
thisguyhasadd2
Registered User
2002 WJ 
 
Join Date: May 2008
Location: Fort Collins/Lake Zurich, Coloroado/Illinois
Posts: 1,026
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
Colorado Jeep Club Member#259
thisguyhasadd2 is offline   Reply With Quote
Unread 12-21-2011, 12:09 PM   #4
grancherkee
Registered User
2000 WJ 
 
Join Date: Jul 2010
Location: france
Posts: 165
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.
grancherkee is offline   Reply With Quote
Unread 12-21-2011, 12:15 PM   #5
dizzle247
Registered User
1999 WJ 
 
Join Date: Apr 2011
Location: Newcastle, WA
Posts: 184
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.
dizzle247 is offline   Reply With Quote
Unread 12-21-2011, 12:24 PM   #6
TSyl
Registered User
2001 WJ 
 
Join Date: Apr 2009
Location: Highlands Ranch, CO
Posts: 413
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.
TSyl is offline   Reply With Quote
Unread 12-21-2011, 12:48 PM   #7
thisguyhasadd2
Registered User
2002 WJ 
 
Join Date: May 2008
Location: Fort Collins/Lake Zurich, Coloroado/Illinois
Posts: 1,026
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
thisguyhasadd2 is offline   Reply With Quote
Reply
Thread Tools


Suggested Threads





Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.