Heat valve
#2
Lexus Champion
iTrader: (31)
A properly functioning heater valve will act as a shut off valve, Your diaphragm is most likely shot as this is a common failure point in our cars.
But you can't really just shut it off as it still needs to flow coolant and a shut off would be a big block in line.
But you can't really just shut it off as it still needs to flow coolant and a shut off would be a big block in line.
Last edited by xspsi6; 09-17-12 at 02:00 PM.