I have a simular problem with my 2001 RX300 in that the flow is correct but I have no heat. Somone please help.
TKS Vaughn
Vaughn.
One possible problem that could cause this is that the operating lever is not opening to allow the hot water/antifreeze mixture into the heater core. You can check the operation real easy to see if it is operating. If you remove the plastic "quick screw" from the passenger side by the center console but first remove the black plastic panel from under the glove box by pulling it down carefully from the front, then the panel at the console can be slid out towards the front of the car. Get a flash light and look up under the dash towards the center of the car, you will see like a little white nylon housing with a lever arm on it, with the ingintion on operate the control for the temperature from hot to cold and this lever should travel up and down, ie opening and closing the water valve. If it is not working it could be something as simple as a fuse, this is located behind the change draw to the left of the steering wheel, consult the legend on the back of the removed tray for it's location and check to see if it is blown. If it isn't blown try cleaning the metal contacts and then reseat it in the holder, I have had this problem with my fuses. Good luck let us all know how you make out. L Turner
L Turner, I followed you instructions which led me to the fuse which I checked previously , but rechecked and throughly cleaned both sides, fuse and box conectors ,and heat works fine. Thank you so much Vaughn
