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Heat blowing cool air

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Old 01-22-2012, 01:05 PM
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Heat blowing cool air

Hello all,

96 4 runner 357k miles and still running strong!

Heat is beginning to blow cold now. Blend door works fine, heat valve replaced last year, thermostat replaced this past summer.

Any thoughts before I take the thermostat out and test?

I read a post earlier regarding a vacuum line sharing the heat valve in the Engine compartment but that was for a 95. My valve is solely connected to the cable (the other end controlled by the heat select knob in dash)

tks in advance

Last edited by trudydog; 01-22-2012 at 01:14 PM.
Old 01-22-2012, 01:08 PM
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mine was just doing this and ended up beling low on coolent,
Old 01-22-2012, 01:13 PM
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coolant

I noticed it to be a little low but I blew it off as "no way it could be that".. wife just sped off to work but will top off in AM and report back...... Hopefully this is the simple fix.. thanks man!
Old 01-23-2012, 01:34 AM
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Smile

Yes if the coolant is low no heat!!
Old 01-23-2012, 05:48 AM
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yup low on coolant....normally everytime, just top it off and check for leaks
Old 01-23-2012, 03:58 PM
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Thumbs up yep

well hell if you all weren't correct..... simple indeed, topped off and the heat happened. amazing stuff... still learning after 357,000 miles

thanks all. so simple sometimes the simple things just get overlooked;-)
Old 01-24-2012, 11:43 AM
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I woulda started with taking your dash apart and replacing your heater core first. Glad it was a simple solution for you.
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