Leaking cerv
CF Veteran
Joined: Nov 2009
Posts: 8,172
Likes: 17
From: The Republic of TEXAS
Year: 1998
Model: Cherokee
Engine: 4.0L HO
'97 up XJs do not have a heater control valve......the factory eliminated it. If warm air is entering when heat selector is at cold, it's likely that the seals around the flapper door have deteriorated.
The heater control valve is eliminated by using new/longer 5/8" and 3/4" heater hoses between the 2 heater core nipples on the firewall and the water pump/t-stat cover.
The heater control valve is eliminated by using new/longer 5/8" and 3/4" heater hoses between the 2 heater core nipples on the firewall and the water pump/t-stat cover.
CF Veteran
Joined: Sep 2011
Posts: 4,172
Likes: 4
From: Riviera, Texas
Year: 1998 Sport
Model: Cherokee
Engine: 4.0
'97 up XJs do not have a heater control valve......the factory eliminated it. If warm air is entering when heat selector is at cold, it's likely that the seals around the flapper door have deteriorated.
The heater control valve is eliminated by using new/longer 5/8" and 3/4" heater hoses between the 2 heater core nipples on the firewall and the water pump/t-stat cover.
The heater control valve is eliminated by using new/longer 5/8" and 3/4" heater hoses between the 2 heater core nipples on the firewall and the water pump/t-stat cover.
There isn't any heater control valve under the dash. Not possible since the hoses are in the engine bay and end at the fire wall at the heater core. The heat is controlled with the blending door. So, If your Jeep has one under the dash I would like to see a picture of it. That way I can see how the water gets to and from it since the hoses don't go under the dash...
CF Veteran
Joined: Nov 2010
Posts: 15,581
Likes: 8
From: some small town oregon
Year: 1989
Model: Cherokee
Engine: 4.0
Originally Posted by RTorrez1
^^2X^^
There isn't any heater control valve under the dash. Not possible since the hoses are in the engine bay and end at the fire wall at the heater core. The heat is controlled with the blending door. So, If your Jeep has one under the dash I would like to see a picture of it. That way I can see how the water gets to and from it since the hoses don't go under the dash...
Thread Starter
Member
Joined: Sep 2011
Posts: 125
Likes: 0
From: Indianapolis
Year: 1995
Model: Cherokee
Engine: 4.0 HO inline six
So what your saying is just go to autozone and say I want the 5/8 and 3/8 hose for a 98 Cherokee and just remove my controls valve an plug it into the firewall ports and ill have no issues ??
Thread
Thread Starter
Forum
Replies
Last Post
mattsmako
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
5
Oct 1, 2015 10:01 AM
carbuff
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
6
Sep 30, 2015 11:24 PM
Jbri22
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
11
Sep 26, 2015 04:30 PM
dshirk
Stock Grand Cherokee Tech. All ZJ/WJ/WK Non-modified/stock questions go here!
0
Sep 24, 2015 10:17 PM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)