heater core
#2
Seasoned Member
Join Date: Aug 2014
Location: Lehigh Valley PA
Posts: 486
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1989
Model: Cherokee
Engine: 4.0 renix
Ya I really should do that...
Part of me wants to do it before winter....a bigger part of me wants to wait til the spring.
Part of me wants to do it before winter....a bigger part of me wants to wait til the spring.
#5
Seasoned Member
Join Date: Aug 2014
Location: Lehigh Valley PA
Posts: 486
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1989
Model: Cherokee
Engine: 4.0 renix
Oh I know about harsh winters...I'm probably no more than 2 hours from you. I think we all somehow know this winter is going to be rough again as well.
It cranks heat for now, and the cooling and heating systems seemed to have been done somewhat recently as well by the PO, but it's one of the next things on my to do list.
It cranks heat for now, and the cooling and heating systems seemed to have been done somewhat recently as well by the PO, but it's one of the next things on my to do list.
Last edited by Stabsthedrama; 10-09-2014 at 09:20 PM.
#6
Member
Thread Starter
Join Date: Nov 2009
Posts: 160
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1999
Model: Cherokee
Engine: 4.0
I didn't want to have to replace mine, that's why I opted to try the flush. I hear they are a pita to do. Don't know when the last time, if ever mine was done. It rocks now! I'm running straight up water for a few days then will redo the core then the rest of the system.
Trending Topics
#8
Senior Member
Join Date: Sep 2014
Location: Saginaw Mi area
Posts: 580
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1994
Model: Cherokee
Engine: 4.0
I've had my '94 for only a few weeks, but did notice the heat isn't impressive. Maybe a flush is needed on this one too....before the brass monkeys arrive...
#9
Member
Thread Starter
Join Date: Nov 2009
Posts: 160
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1999
Model: Cherokee
Engine: 4.0
I'm not going to say this is the best way, as there are a lot of ways performed on this. I flushed it, filled the system back up with straight water. Ran it for a couple days and reflushed. Got more crap out. Flushed till it ran clean. Filled entire system back up with 50/50 now the heat really cranks. Easy project. Gonna be cold before you know it.
#10
Senior Member
Join Date: Apr 2012
Location: Ocean, New Jersey
Posts: 578
Likes: 0
Received 4 Likes
on
4 Posts
Year: 2000
Model: Cherokee
Engine: 4.0
This may sound like a dumb question but is it necessary to drain the coolant, even partially before you remove the hoses going to/from the heater core? I did a system flush a few months back but didn't do a specific heater core flush and rather not drain the system if it can be avoided. Going by touch/squeeze, it feels like the two heater hoses are empty when the engine is cold. Thanks.
#11
Junior Member
Join Date: Sep 2014
Location: Roseville, MN
Posts: 33
Likes: 0
Received 2 Likes
on
2 Posts
Year: 2001
Model: Cherokee
Engine: 4.0L
They shouldn't ever be empty. If they are, then there's air in the system. Typically even if you do get air it will eventually bleed out into the overflow, and as long as your overflow bottle doesn't go empty it will suck coolant back in when it cools.
So if you disconnect heater hoses without at least partially draining the coolant first, you will drain some coolant when you disconnect them!
So if you disconnect heater hoses without at least partially draining the coolant first, you will drain some coolant when you disconnect them!
#12
Senior Member
Join Date: Apr 2012
Location: Ocean, New Jersey
Posts: 578
Likes: 0
Received 4 Likes
on
4 Posts
Year: 2000
Model: Cherokee
Engine: 4.0
They shouldn't ever be empty. If they are, then there's air in the system. Typically even if you do get air it will eventually bleed out into the overflow, and as long as your overflow bottle doesn't go empty it will suck coolant back in when it cools.
So if you disconnect heater hoses without at least partially draining the coolant first, you will drain some coolant when you disconnect them!
So if you disconnect heater hoses without at least partially draining the coolant first, you will drain some coolant when you disconnect them!
Thread
Thread Starter
Forum
Replies
Last Post
cpnwrench
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
13
02-15-2024 08:09 AM
jmsummers2012
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
53
04-30-2021 02:35 PM
bradleyheathhays
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
6
10-03-2015 09:51 PM
Silentj
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
10
10-02-2015 01:24 PM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)