After a trip to the local library, I scored a schematic diagram of the
Buick. The ONLY thing that is even close to what I am describing is what
appears to be a downshift switch. It runs in line with the kickdown solenoid
on the tranny. The colors of the wires could match, but it is very hard to
tell exact colors due to wear. I'll peel some of the wire back tomorrow in
the daylight. So I did some more research on model years before and after
1973 and came up with this GM part number 1235480 in the 1971-72 range. I
am now looking for a diagram, or a pic of this particular part number to
find out if it is the same animal that I need. I will be hitting the dealer
tomorrow and they will have to pull out the microfiche I am sure. Any on
Application: 1973 Buick Electra 225, aka Land Yacht 455 Buick motor, NOT the
Olds version OK.....I am stumped, and have stumped several different parts
What is the switch/sensor doing in the back of the head????? It is a two
device that is located in the rear of the passenger side head.
The switch works on heat. When it is hot, the switch closes, cold...open.
What is it's purpose??
Could someone provide a part number of something too??
More info..the two wires are brown, and there is a similar sensor on the
opposing head, same location.....single "nub" similar to the old style oil