2000 sport heater problem - JeepForum.com

 
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post #1 of 9 Old 02-01-2007, 01:39 PM Thread Starter
b15618
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2000 sport heater problem

My 2000 cherokee sport seems to not want to provide hot heat. I have replaced all hoses, thermostat, and coolant. Heater core has been blown out with air; and I'm still getting just warm, almost hot air.
Any suggestions as to the cause of this problem??

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post #2 of 9 Old 02-01-2007, 02:08 PM
kg4kzv
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Have you tried to burp the cooling system? There is a sticky under tech on how to do it if not.

Chris

95 Cherokee SE 4.0, 5-Spd, 8.25;
6.5" Rusty's Lift, Atlas II Rims, 35x12.5x15 Wild Country,Rusty's Tube Bumper, Wilderness Rack
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post #3 of 9 Old 02-01-2007, 03:41 PM
JEEPZZ
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No need to 'burp' to cooling system, his 2000 has a radiator cap. The system self purges the air out the very first time the t-stat opens up.

I would suggest back flushing the heater core with water (not air) until all of the crud comes out. Once the water comes out clear, alternate flushing it forward and then backwards until you have a clean, high volume flow coming out of the core. It's a piece of cake to do with a garden hose and should only take you about 10-15 minutes.

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post #4 of 9 Old 02-01-2009, 03:15 PM
sofixj
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when flushing the heater core where do you hook up your water supply line i jhave a 97 sport and i have the same issue ill be replacing the hoses and clamps and t stat this week i wanna FLUSH THE HEATER CORE BUT NOT SURE HOW TO

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post #5 of 9 Old 02-01-2009, 03:21 PM
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I would also suggest looking into the blend door to see if it is closing off properly. your problem may not be related to the coolant flow.

  1. '95 XJ country edition, 4" coils/3/4" spacers, HD leafs with extra main added in, Ironman adjustable control arms, rough country shackles, aussie locker, JK rubicon shocks, 35" mudder's, soft 8's, cobra cb
  2. Sold'99 WJ limited, 4.7L, 3" IRO lift. Bilstein shocks, JK rubicon wheels, 255/70/17's, carolina driveshaft, IRO adjustable control arms, IRO adjustable A-arm
  3. Sold '00 TJ, 4" lift, rusty's adjustable control arms, skyjacker shocks, rock krawler adj. trac-bar,rugged ridge SYE and RE driveshaft, soft 8's, 35" mud king xt's,XJ HP D30 w/aussie locker, 4:88 yukon gears, hella 500's, rock crusher diff covers
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post #6 of 9 Old 02-01-2009, 03:39 PM
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ok what are the hints for the blend door where should i hear it .. and my 97 sport has 125000 miles on it i just bought her so not sure of past maintance

,=====o00o
//___l__,\____\,___
l_--- \___l---[]lllllll[] _
_(o)_)___(o)_)--o-)_) only in a JEEP
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post #7 of 9 Old 02-06-2009, 12:37 AM
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holy heat batman!!!!!!!!!!!!!! well i flushed the heater core and the entire cooling system out to night and wow was it brown and kinda chunky refilled it with fresh 50-50 mix and so far its blowing nice hot air.... still waiting to get all the bubbles out... i also replaced the thermostat and rad cap....

,=====o00o
//___l__,\____\,___
l_--- \___l---[]lllllll[] _
_(o)_)___(o)_)--o-)_) only in a JEEP
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post #8 of 9 Old 02-06-2009, 06:14 AM
xjfever
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Glad you got it fixed. I know it's cold up there.

  1. '95 XJ country edition, 4" coils/3/4" spacers, HD leafs with extra main added in, Ironman adjustable control arms, rough country shackles, aussie locker, JK rubicon shocks, 35" mudder's, soft 8's, cobra cb
  2. Sold'99 WJ limited, 4.7L, 3" IRO lift. Bilstein shocks, JK rubicon wheels, 255/70/17's, carolina driveshaft, IRO adjustable control arms, IRO adjustable A-arm
  3. Sold '00 TJ, 4" lift, rusty's adjustable control arms, skyjacker shocks, rock krawler adj. trac-bar,rugged ridge SYE and RE driveshaft, soft 8's, 35" mud king xt's,XJ HP D30 w/aussie locker, 4:88 yukon gears, hella 500's, rock crusher diff covers
4. 04 Dodge ram 1500 quadcab, yes, it has a hemi.
5. '08 BMW X3, Mods in progress.
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post #9 of 9 Old 02-06-2009, 07:53 AM
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Quote:
Originally Posted by sofiYJ View Post
holy heat batman!!!!!!!!!!!!!! well i flushed the heater core and the entire cooling system out to night and wow was it brown and kinda chunky refilled it with fresh 50-50 mix and so far its blowing nice hot air.... still waiting to get all the bubbles out... i also replaced the thermostat and rad cap....
Neat. Any tips on procedure? I'd like to do this too... my heat seems to be degrading (but the blend doors are working OK).

I've read you should pull the heater hoses off the water pump rather than from the core itself (at the firewall). Does a lot of coolant spill out? What's the best way to link up a garden hose to a heater hose? I was going to look around for a brass barb end that would stuff into the heater hose and thread onto the garden hose...
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