Can someone tell me what this part is called?
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It's for your heater, tends to stick closed and not allow warm air into the car like mine does :3d_frown:.
Not really ouch.
The only time the valve is closed is when the AC is on.
It's usually open and circulating hot water through the core.
The only time the valve is closed is when the AC is on.
It's usually open and circulating hot water through the core.
supra90turbo said:
sorry but you are wrong.
It should always be closed unless you have the heat on, otherwise in the middle of summer you would always be heating your car unless you have the AC on.
You can get rid of it if you wish but you will not be happy with the results when it gets hot out.
rumptis said:
Heater valve is only closed if the inside Climate Control is set to 65 degrees.
The air mix control servo motor is what keeps you from always running hot inside the car, with the coolant valve open.
What the hell - just to avoid future confusion -
http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?Section=AC&Page=41
supra90turbo is correct.
Running without the valve would do little to change the internal temp of the car - you'd just not have that supra ice cold AC when you set it to max cool (65 degrees)
so if its 105 in your car and you have the thing set to 66 degrees its going to be flowing hot water through your heater core?
Eh, it's cool. Go check out any old (pre '80) GM - nobody heard of a heater valve then. 
Hell, Dodge ran without one in their trucks until like '99, IIRC.
Just because hot coolant is running through your heater core, does not mean the air flowing over your heater core is coming into the passenger compartment.
Hell, Dodge ran without one in their trucks until like '99, IIRC.Just because hot coolant is running through your heater core, does not mean the air flowing over your heater core is coming into the passenger compartment.