Delete Heater Control Valve Write up
Thread Starter
Senior Member
Joined: Apr 2012
Posts: 716
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From: Charlotte, NC
Year: 1994 Jeep Cherokee Sport
This is good to know. Whatcha doing with our oil over there ;-).
Junior Member
Joined: Nov 2010
Posts: 66
Likes: 0
From: Centerton, AR
Year: 1995
Model: Cherokee
Engine: 4.0
Thanks for these HCV threads. Mine had 2 little pin holes in it spraying antifreeze everywhere. I just removed the HCV and connected the two hoses up. Both of my hoses were 5/8 all the way. I have read where some where saying they had 2 different sizes but mine were the same.
CF Veteran
Joined: Nov 2011
Posts: 1,314
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From: Las Vegas, NV - St. George, UT
Year: 1996
Model: Cherokee
Engine: 4.0
I removed the HCV a couple years ago and replaced both hoses with preformed 97+ ones. Originally I just bought the hose and made my own one piece units, no connectors to leak. The bends to go around the dip stick area were annoying me so when I flushed the heater core and the entire system again, I just opted for the 97+ hoses.
TWM, mine were 5/8 and 3/4 hoses.
TWM, mine were 5/8 and 3/4 hoses.
Junior Member
Joined: Jul 2020
Posts: 34
Likes: 1
Model: Cherokee (XJ)
This is dedicated to Firestorm and Orlo :-)
For those of you that participated in the heater control valve (HCV) thread, why was it closed? Just so you can see, I took you guys' advice, and bit the bullet...no more heater control valves--I'm hangin wit da big boys :-)
1994 XJ
Detached vacuum line
Detached HCV from the four hoses
Connected heater hose (connected to Tstat) to bottom outlet hose (with a connector) tightened existing clamps
Connected the other hose (connected to water pump) to the top inlet hose tightened existing clamps
Capped the vacuum line (vacuum line caps $1.99, 5-pack)
For those of you that participated in the heater control valve (HCV) thread, why was it closed? Just so you can see, I took you guys' advice, and bit the bullet...no more heater control valves--I'm hangin wit da big boys :-)
1994 XJ
Detached vacuum line
Detached HCV from the four hoses
Connected heater hose (connected to Tstat) to bottom outlet hose (with a connector) tightened existing clamps
Connected the other hose (connected to water pump) to the top inlet hose tightened existing clamps
Capped the vacuum line (vacuum line caps $1.99, 5-pack)
CF Veteran
Joined: Dec 2017
Posts: 4,367
Likes: 1,215
Year: 1989
Model: Comanche (MJ)
Engine: 4.0
Did you delete the surge tank as well? If not, then just fill from the surge tank like normal. If you deleted the surge tank, then you need a radiator cap somewhere or you're going to blow a line when it heats up.
Thread Starter
Senior Member
Joined: Apr 2012
Posts: 716
Likes: 0
From: Charlotte, NC
Year: 1994 Jeep Cherokee Sport
Member
Joined: Aug 2016
Posts: 112
Likes: 9
From: NW AR
Year: 1995
Model: Cherokee
Engine: 4.0
This is dedicated to Firestorm and Orlo :-)
For those of you that participated in the heater control valve (HCV) thread, why was it closed? Just so you can see, I took you guys' advice, and bit the bullet...no more heater control valves--I'm hangin wit da big boys :-)
1994 XJ
Detached vacuum line
Detached HCV from the four hoses
Connected heater hose (connected to Tstat) to bottom outlet hose (with a connector) tightened existing clamps
Connected the other hose (connected to water pump) to the top inlet hose tightened existing clamps
Capped the vacuum line (vacuum line caps $1.99, 5-pack)
For those of you that participated in the heater control valve (HCV) thread, why was it closed? Just so you can see, I took you guys' advice, and bit the bullet...no more heater control valves--I'm hangin wit da big boys :-)
1994 XJ
Detached vacuum line
Detached HCV from the four hoses
Connected heater hose (connected to Tstat) to bottom outlet hose (with a connector) tightened existing clamps
Connected the other hose (connected to water pump) to the top inlet hose tightened existing clamps
Capped the vacuum line (vacuum line caps $1.99, 5-pack)
Thread Starter
Senior Member
Joined: Apr 2012
Posts: 716
Likes: 0
From: Charlotte, NC
Year: 1994 Jeep Cherokee Sport
Go with the specs for your Jeep. Double-check your manual (if don’t have it, access it online) or check with your local parts store
Side note: Remember to talk nice to your Jeep and ask her/him questions. This will help to discern what’s right for your Jeep
XJs are the bomb!
Side note: Remember to talk nice to your Jeep and ask her/him questions. This will help to discern what’s right for your Jeep
XJs are the bomb!
I’m preparing to do this and thermostat replacement. I looked at my heater hoses today and it appears both hoses from the stat & water pump to the valve are 5/8, and both hoses from the valve to the heater core connections are 5/8. I’ve seen other threads mention one hose should be 3/4. Anyone know if both hoses could be 5/8 in a ‘95 XJ? I know the hoses were replaced in the past before I owned the Jeep, but I wouldn’t think anyone could get a 5/8 hose on the 3/4 connections.
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