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I have no heat!
I have an 03 celica gt, and the heat wont come on all the time. it will come on if i get on it really good after the motor is at operating temp, and sometimes it will randomly come on but only after about 20 minutes of driving. i found out that these cars dont have a heater control valve, so im stuck as to what the problem is. once the heat comes on, its very hot but it just takes a bit of encouragement for it to come on.
i found a solenoid valve that has a huge vac line that is attached to the throttle body and then goes into the cabin, which i believe is for the vacuum operated heater/ air blender in the car, and theres a schrader valve in the line that goes to the cabin, so i ran the car on heat and cool and there was no vacuum in that line at the schrader valve, could that solenoid be bad? or what could it be? thanks for the help!
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