Fluctuating engine temp and no heat.
#1
Junior Member
Thread Starter
![Default](https://www.cherokeeforum.com/images/icons/icon1.gif)
So I just had to pull my engine and install a new one, it is running smoothly the only problem is the eninge temperature fluctuates from under the 210 line to above it and will not settle. I installed a new thermostat with the new eninge and thought I burped the colling system well but may not have will try again when I get home. As well as this the cabin heater does not get hot like it used to, it's warmer than the outside air but not by much. I fear the issue is connected any input would be highly appreciated.
#2
Newbie
Join Date: Dec 2020
Location: Davenport iowa
Posts: 21
Likes: 0
Received 9 Likes
on
4 Posts
Year: 1999
Model: Cherokee (XJ)
Engine: 4.0
![Default](https://www.cherokeeforum.com/images/icons/icon1.gif)
Burp the system once more, may of gotten a bad thermostat new. It happens. But as for your heater that is an extremely common issue as well. Pull your heater lines off and backfeed through it and see what kind of gunk comes out. That’s just part of jeep life. I recommend putting a coolant filter on. You can get it done for like 50 bucks and it will keep crap from building up in your heater core. It’s extremely annoying to change out your heater core so you definitely want to make it last as long as you can
#3
Junior Member
Thread Starter
![Default](https://www.cherokeeforum.com/images/icons/icon1.gif)
Burp the system once more, may of gotten a bad thermostat new. It happens. But as for your heater that is an extremely common issue as well. Pull your heater lines off and backfeed through it and see what kind of gunk comes out. That’s just part of jeep life. I recommend putting a coolant filter on. You can get it done for like 50 bucks and it will keep crap from building up in your heater core. It’s extremely annoying to change out your heater core so you definitely want to make it last as long as you can
#5
Junior Member
Thread Starter
#6
Newbie
Join Date: Dec 2020
Location: Davenport iowa
Posts: 21
Likes: 0
Received 9 Likes
on
4 Posts
Year: 1999
Model: Cherokee (XJ)
Engine: 4.0
![Default](https://www.cherokeeforum.com/images/icons/icon1.gif)
If yours is a 96 it should have the open cooling system unless when you swapped the motor over you went with a closed system That diagram was only meant to show you coolant flow so you can potentially backfeed through your heater core. Main line coming out of the top of the thermostat housing is the feed
#7
Junior Member
Thread Starter
![Default](https://www.cherokeeforum.com/images/icons/icon1.gif)
If yours is a 96 it should have the open cooling system unless when you swapped the motor over you went with a closed system That diagram was only meant to show you coolant flow so you can potentially backfeed through your heater core. Main line coming out of the top of the thermostat housing is the feed
Trending Topics
Thread
Thread Starter
Forum
Replies
Last Post
John Beasley
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
3
12-17-2020 05:31 PM
2000_silver_xj
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
21
12-16-2019 08:50 AM
The Rooster
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
27
02-21-2013 12:31 PM
chuckd2008
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
3
02-15-2010 10:38 PM
xjbomber
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
22
11-26-2009 09:43 AM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)