Quote:
Originally Posted by jrd1990zr1
Jim,
I see no movement of a door through the heater resistor hole. Top line to heater core is about the same as the metal crossover, however the return(lower) metal line from the heater core is significantly cooler.
I don't see anything in the 1990 FSM about getting to the door, door actuator or motor. Have you done this on your car? Am I missing something in the FSM?
Thanks again, John  |
No Movement of the Blend Door is a good indicator of a problem. I did a repair (replace) to my Blend Door Motor on a 1994 ZR-1 which does not have a glove box and the blend door motor is on the bottom of the AC Duct.
The operation and diagnosis of the HVAC controls is (in the 1994 FSM) described in bits and pieces in Volume 1 and in Volume 2 and it takes a fair amount of research to figure it all out.
Here is the Thread where I fixed my problem which may be similar to yours>
http://www.zr1.net/forum/showthread.php?t=27542
Jim