Heater Control Valve
CF Veteran
Joined: Nov 2010
Posts: 5,840
Likes: 117
From: In the middle of Minnesota!
Year: 1999
Model: Cherokee
Engine: 4.0
Sorry to dig up an old-ish thread...didn't want to start a new one when we could just add more info to an old one!
I have a '95 and I DO have a heater control valve. It is leaking... pretty good too. About a drip every second... no wonder my coolant keeps disappearing.
Could this be why my heat and a/c are not very stong? I feel like my a/c especially used to be much stronger.
Help!
I have a '95 and I DO have a heater control valve. It is leaking... pretty good too. About a drip every second... no wonder my coolant keeps disappearing.
Could this be why my heat and a/c are not very stong? I feel like my a/c especially used to be much stronger.
Help!
Don't wait. Fix this.
Member
Joined: Dec 2009
Posts: 189
Likes: 0
From: Missoula, MT
Year: 1995
Model: Cherokee
Engine: 4.0L
Yeah, I was planning on going to NAPA in the morning. This thread talks about how useless the HCV is and everyone just bypassing it completely... what is its purpose then?
Senior Member
Joined: Jun 2012
Posts: 595
Likes: 0
From: Rome, GA
Year: 1990
Model: Cherokee
Engine: 4.0
Those valves are totally unnecessary IMHO. I ended up tearing out my whole RENIX cooling system and replacing it bit by bit, with components for a new model. The heater valve was the last item and was the result of a leaking hose near one of the metal lines.
Now, I just have 2 plain hoses going to the heater core and both the A/C and heater work better than before.
Now, I just have 2 plain hoses going to the heater core and both the A/C and heater work better than before.
Herp Derp Jerp
Joined: Nov 2011
Posts: 18,251
Likes: 17
From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
97+ doesn't even have a heater control valve, instead only the blend door is used for temperature control.
The HCV is not mandatory but fixing leaks absolutely is
The HCV is not mandatory but fixing leaks absolutely is
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