Re: IML: I "Fixed" the Fan but BROKE the Switch

["Pete Engel" <peter.engel@xxxxxxxxxxx>]

According to the 1966 Mopar MPC, a 66 Imperial with A/C uses vacuum control
#2096084.  While the B- and C-bodies use a different p/n switch, the lowly
Dart and Valiant use the exact same number part as the Imperial.

This p/n has probably been updated several times so who knows what the
current number is.

Aren't these vacuum controls available from NAPA?  I got an NOS one for my
70 LeBaron (wth AutoTemp) from Central Motor Parts in NJ.  Less than $50
IIRC.

Pete in PA


From: "Jon Ricketson" <jcricketson@xxxxxxxxxxx>
Subject: IML: I "Fixed" the Fan but BROKE the Switch!
Date: Sun, 18 Sep 2005 17:36:30 -0400
 
So, today I worked on my '66 Crown Coupe and, while trying to figure out why

my heater/AC fan would not run, I figured out that the switch with the 5 
buttons in it was faulty.  This part is pretty complex - with several vacuum

hoses plugged into it, and 4 or 5 electrical wires attached to it.  The push

buttons were engaging the vacuum switches correctly and were turning the AC 
Compresser Clutch on and off correctly, but were NOT sending any power to 
the fan via the fan speed switch.  The fan speed switch is working fine so I

know the problem is in the 5 button switch.  I confirmed this by doing some 
continuity testing with an ohm meter.  Spraying lots of electrical cleaner 
into the small openings in the switch provided inconsistent results.  
Anyway, connecting one of the wires to the hot lead on the switch resulted 
in the fan running always - even when the OFF button is pushed.  And the fan

speed switch works.  For now, I can live with this.  At least I now get heat

and AC!!




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