Do i really need a heater control valve?
05-11-2011, 09:37 PM
#1
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Year: 1996
Model: Cherokee
Engine: 4.0L
Do i really need a heater control valve?
Is that thing really necessary? What would happen if I just put in a manual on/off valve, and opened it during winter and closed it during summer...or just leave it open all year round? Would it affect my ac cooling temperature?
05-11-2011, 10:08 PM
#2
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Year: 1998
Model: Cherokee
Engine: 4.0L HO
'97 up don't have a heater control valve. If the flow is shut off to the heater core, coolant sits there and stagnates, crud forms, so a plug could form as well. My guess is that's why the factory eliminated it on '97 up.
05-11-2011, 11:34 PM
#3
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Year: 1996
Model: Cherokee
Engine: 4.0L
So you're saying I don't need it? I don't know if they changed something else in the 97+ so that it can work without it.
05-12-2011, 01:54 AM
#4
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Year: 1996
Model: Cherokee
Engine: 4.0L
For anyone interested I found this thread on naxja that answered all my questions:
www.naxja.org/forum/showthread.php?t=1026840
www.naxja.org/forum/showthread.php?t=1026840
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