It's time for me to practise what I've been preaching. Today I started
troubleshooting the ATC (Automatic Temperature Control) in the NYB. I've
never actually ever repaired a non-functional unit before so this is a first
for me. I moved the car outside to get more light and so I could run the
engine without sucking exhaust. This is basically what I found:
The Hot/Cold air door is stuck, well, it was. This was no doubt more water
damage. I was able to free it somewhat but not enough. The servo itself
moves this air door by way of a lever on top of the air box.
http://www.nybclub.org/m&r/AutoTempDemoModel/image1.htmhttp://www.nybclub.org/m&r/AutoTempDemoModel/image2.htmhttp://www.nybclub.org/m&r/AutoTempDemoModel/image4.htm
I am considering cutting an access door in the front of the air box to help
me free this door.
The "amplifier" was bad. I replaced it and things worked better so I guess
that means it was bad. The amplifier is the little black box mounted to the
extreme right end of the air box.
http://www.nybclub.org/m&r/AutoTempDemoModel/image14.htm
The blower motor started making horrible noises indicating bearing problems.
I have a replacement I can use but by the look of it, those are not easy to
change. The motor must be removed from under the hood and it is tucked down
under the quarter panel. I hope I can remove it without removing the panel.
http://www.nybclub.org/m&r/AutoTempDemoModel/image11.htm
At least now I know what I am up against with the ATC. It was one of those
big question marks all along. I think I got away lucky actually.
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