Heater Control Valve ? - Pirate4x4.Com : 4x4 and Off-Road Forum

J-Dogg · 03-23-2004, 05:58 PM

On my 91 XJ 4.0, the heater control valve cracked. Is it really needed or can I get rid of it?

deadmeat · 03-23-2004, 06:10 PM

Yes you can bypass the heater core.
You need to allow for flow with it removed. I made a bypass for mine with 1/2" copper and two elbows.

03-23-2004, 05:58 PM	#1 (permalink)
J-Dogg Registered User Join Date: Dec 2000 Member # 2471 Location: Citrus Heights, CA Posts: 1,771	Heater Control Valve ? On my 91 XJ 4.0, the heater control valve cracked. Is it really needed or can I get rid of it?

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03-23-2004, 06:10 PM	#2 (permalink)
deadmeat Registered User Join Date: Jul 2003 Member # 21498 Location: Colorado Posts: 251	Yes you can bypass the heater core. You need to allow for flow with it removed. I made a bypass for mine with 1/2" copper and two elbows.