Removing old heater core from 2000 Jeep

Tiny
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  • 2000 JEEP CHEROKEE
I have a 2000 jeep cherokee classic. I am having trouble removing the casing so I can get to the old heater core to remove it. I need step by step to figure out how to remove the heater core. I am now stuck because I cannot seem to remove the actual housing box that holds the heater core. I need help with that. I am going to try to remove all the bolts from firewall to see if that will loosen it up. Any suggestions?
Sunday, January 30th, 2011 AT 7:00 PM

7 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
The ones that pass all the way through will be obvious when looking at them. If you gently rock the housing, you will be able to tell what point is holding it.
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Sunday, January 30th, 2011 AT 7:45 PM
Tiny
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Ok, so I have removed ALL bolts attaching the box to firewall. I still can not get this stupid thing out so I can open it to replace the heater core. I even removed the bolt that was hard to get to. Any other ideas? I have heard some people say they have had to break the box/housing open but I really don't think I wanna do that.
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Sunday, January 30th, 2011 AT 8:20 PM
Tiny
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I can't tell you what you missed. Here's the location of the bolts. It might just be stuck on the weather packing they put it together with.

https://www.2carpros.com/images/external/81868725.gif
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Sunday, January 30th, 2011 AT 8:25 PM
Tiny
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Alright. Thanks for that diagram. Ok, I missed bolt no. 4. Lemme give that a try.
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Sunday, January 30th, 2011 AT 8:39 PM
Tiny
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Ok, this may be totally wrong. I have removed ALL bolts now thanks to the diagram. It still will not come loose. It looks like the AC accumulator(? I am talking about the silver cylindrical piece on passenger side under the hood)is attached to the back part of housing? Do I need to figure out how to remove that too?
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Sunday, January 30th, 2011 AT 8:53 PM
Tiny
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The system has to be evacuated first and then remove the accumulator and liquid line.

Here is a guide to help you get the job done.

https://www.2carpros.com/articles/re-charge-an-air-conditioner-system

Please let us know if you need anything else to get the problem fixed.

Cheers

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Sunday, January 30th, 2011 AT 8:57 PM
Tiny
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Well, I really do appreciate your help and expertise. You helped me enough to see that I did get in over my head with this job. So, on that note, thanks again. I will have to go another route. I have a few mechanics that I can call. I was trying to avoid it at all costs (no pun intended). Thanks again.
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Sunday, January 30th, 2011 AT 9:03 PM

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