I was wondering if anyone knew how to disable the delay mechanism on my automatic climate control. I believe it's a 2 part setup, a thermostat on the heater valve and a restrictor tube (orfice tube). I never did understand why further delay was needed after the coolant was hot enough to trip the thermostat, so does anyone know where the orfice tube is located? The big problem is that it affects the air conditioning. Driving around in a boiling car for 10-15 mins before it decides to turn on the A/C is not fun.