Had little heat, replaced water pump, now no heat
02-05-2015, 08:58 PM
#31
Newbie
Join Date: Nov 2014
Posts: 10
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
'97-up did not have the heater control valve, so there shouldn't be one on there.
As DJB stated, it should be really easy to check the hoses to see if they are both HOT going in, and coming out of the heater core.
It is possible that you have air trapped in the system, since you just replaced the water pump.
Make sure the coolant level is FULL.
Sometimes it takes a few days of hot/cold cycling to get all the trapped air out of the system.
As DJB stated, it should be really easy to check the hoses to see if they are both HOT going in, and coming out of the heater core.
It is possible that you have air trapped in the system, since you just replaced the water pump.
Make sure the coolant level is FULL.
Sometimes it takes a few days of hot/cold cycling to get all the trapped air out of the system.
02-05-2015, 09:30 PM
#32
CF Veteran
Join Date: Nov 2009
Location: The Republic of TEXAS
Posts: 8,172
Likes: 0
Received 14 Likes
on
14 Posts
Year: 1998
Model: Cherokee
Engine: 4.0L HO
I'm thinking if the system is maintained and fluid is kept at the right level in the overflow reservoir then air in the system is not an option. The lower hose is the supply hose and the upper one is the return hose. So the water is being forced into the bottom of the core and air should be pushed up and out at all times and released through the rad cap and into the reservoir.
02-10-2015, 07:58 PM
#33
Newbie
Join Date: Jan 2015
Posts: 4
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
I got my heat to work! It was the heater core and it took some aggressive flushing to clear it. I used a garden hose the first time and water flowed through, it just wasnt enough pressure to clear the block.
Thread
Thread Starter
Forum
Replies
Last Post
Aryl
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
10
04-10-2019 09:07 AM
RunnerInPink
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
25
10-10-2017 10:34 AM
Tompop
Stock Grand Cherokee Tech. All ZJ/WJ/WK Non-modified/stock questions go here!
16
08-25-2015 03:35 PM
xjmaob
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
4
08-23-2015 04:49 PM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)