New heater contrl valve leak?

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08-01-2011, 02:26 PM

95black

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Model: Cherokee

New heater contrl valve leak?

I just put a new. Heater control valve in and it leaks when you start it after it hasnt run in a while but then it just stops when it runs for about 2 min. It comes out the silver arm part that pushes the diapham thingy.. Any suggestions? I just had a radiator flush done too

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08-01-2011, 02:39 PM

djb383

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Year: 1998

Model: Cherokee

Engine: 4.0L HO

Get longer heater hoses and eliminate the valve....that's what the factory did '97 up.

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08-01-2011, 02:46 PM

95black

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Oh, didnt know that! Anybody have any pics on how this setup works? This plastic piece of junk is worthless...

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08-01-2011, 03:55 PM

s14unimog

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Model: Cherokee

how is the heat controlled on a '97 and up model? Is there not some blender valve in the routing somewhere?

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08-01-2011, 04:32 PM

djb383

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Year: 1998

Model: Cherokee

Engine: 4.0L HO

I believe more or less heat is controlled by more or less cool/cold air flowing across the heater core. Coolant flow thru the heater core is constant.

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