Question:
"The compressor clutch, evaporator and condenser fans aren't energized
(on any car's I know of) while the key is in the 'Start' position
anyway. They're powered through the 'accessory' side of the switch, and
aren't activated until the key is released to 'run' position. Some even
have computer controlled 'delay' features. In reality, it doesn't make
a
whole lot of difference if you leave the A/C on or not when you shut
down/start up... "
Before I go back and argue me case, can this be confirmed by anyone?
Also, he only drives cars from the 70's. Was this a problem with cars
from that time period and prior?
Answer:
The start position on any automotive electrics I have worked on is it's
own unique circuit. It even has a bypass to energize just the coil and
ignition circuits.
I know for sure on Jeep CJ's (the old ones), Wranglers and Cherokees
that no accessories are energized when the starter is running because I
have the wiring diagrams that clearly show where the power goes from the
'start' pin in the keyswitch. The starter wants 'all' the power.
Now if he wants low load on the engine when it is first at idle,
shutting off the AC would make a little sense... maybe.
The only way you can for sure argue the point would be to get the
keyswitch pinout and wiring in print. The Public Library has most auto
manuals, or it used to anyway, so you could photo copy the pages
