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Thermometer Calibration

Started by Big Fins, May 20, 2024, 12:45:55 PM

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Big Fins

Is the thermometer on the left side mirror able to be calibrated? Mine reads about 15ohigher than it should. No mention of it anywhere in FSM other than it's optional. Plus, I don't want to break it.

Nothing really earth shattering to worry about, but something like that plays on my OCD.
Current:
1976 Eldorado Convertible in Crystal Blue Fire Mist with white interior and top. (Misty Blue)

Past and much missed:
1977 Brougham de Elegance
1976 Eldorado Convertible
1972 Fleetwood Brougham
1971 Sedan de Ville
1970 de Ville Convertible
1969 Fleetwood Brougham
1969 Sedan de Ville
1959 Sedan deVille

jagbuxx #12944

No calibration that I'm aware of. On my '76 I swapped the thermometer portion with a know good one of the several I had salvaged from wrecking yards. It can be detached from the mirror housing if you are careful.
Frank Burns #12944
76 Coupe d'Elegance EFI Galloway Green Firemist
70 deVille Convert San Mateo Red
61 Coupe Deville Bristol Blue
41 Series 61 Deluxe Coupe 6127D Black
08 STS 3.6 1SC  Thunder Gray
16 GTI Gray
03 T-Bird Black
16 Grand Cherokee Summit, Granite
19 Tiffin Phaeton 40AH
07 Corvette Blue
20 MB S450 White

"Whatever the occasion, there
is no better way to arrive than in a Cadillac.

Big Fins

Thank you, sir. I guess I had better leave well enough alone.  :-\
Current:
1976 Eldorado Convertible in Crystal Blue Fire Mist with white interior and top. (Misty Blue)

Past and much missed:
1977 Brougham de Elegance
1976 Eldorado Convertible
1972 Fleetwood Brougham
1971 Sedan de Ville
1970 de Ville Convertible
1969 Fleetwood Brougham
1969 Sedan de Ville
1959 Sedan deVille

TJ Hopland

Its it just pressed or glued in?
73 Eldo convert w/FiTech EFI, over 30 years of ownership and counting
Somewhat recently deceased daily drivers, 80 Eldo Diesel & 90 CDV
And other assorted stuff I keep buying for some reason

Big Fins

Quote from: TJ Hopland on May 21, 2024, 10:35:24 AMIts it just pressed or glued in?

No clue. On the forward facing side of the mirror stand, there is an opening where the probe sits.

The lens is still nice and clear and the wheel bright white. I tried gripping the sending probe with a set of needle nose, but again, I don't want to force it. Breaking it all would leave an ugly hole there.
Current:
1976 Eldorado Convertible in Crystal Blue Fire Mist with white interior and top. (Misty Blue)

Past and much missed:
1977 Brougham de Elegance
1976 Eldorado Convertible
1972 Fleetwood Brougham
1971 Sedan de Ville
1970 de Ville Convertible
1969 Fleetwood Brougham
1969 Sedan de Ville
1959 Sedan deVille

jagbuxx #12944

Quote from: TJ Hopland on May 21, 2024, 10:35:24 AMIts it just pressed or glued in?
if I recall it was glued-maybe with a putty? Don't try to tap it out from the front as it could crack the clear plastic housing. I recall that I was able to pry it out gradually with a razor blade around the circumference of the clear lens..
Frank Burns #12944
76 Coupe d'Elegance EFI Galloway Green Firemist
70 deVille Convert San Mateo Red
61 Coupe Deville Bristol Blue
41 Series 61 Deluxe Coupe 6127D Black
08 STS 3.6 1SC  Thunder Gray
16 GTI Gray
03 T-Bird Black
16 Grand Cherokee Summit, Granite
19 Tiffin Phaeton 40AH
07 Corvette Blue
20 MB S450 White

"Whatever the occasion, there
is no better way to arrive than in a Cadillac.

bcroe

The simple thermometers using a coil of bimetal
to turn the needle, may have a coil anchor that
can be turned.  This will shift the reading the
same amount everywhere.  Bruce Roe

Big Fins

Revisiting this...

I got it. At the front of the mirror where the sensor is, it's an open area in which you can get a small set of needle nosed pliers (think jewelers tools) into the opening. Grasping the sensor lightly, it can be turned in either direction to direct the temperature wheel to the red needle in the plastic housing.

It takes very little to move the dial to the correct setting. I used a digital meat thermometer that I know is accurate as my base tool and lowered what used to be a 15oF error in the reading.

Just in case you have one and want it to read correctly. I'll sleep tonight now! ;D

Current:
1976 Eldorado Convertible in Crystal Blue Fire Mist with white interior and top. (Misty Blue)

Past and much missed:
1977 Brougham de Elegance
1976 Eldorado Convertible
1972 Fleetwood Brougham
1971 Sedan de Ville
1970 de Ville Convertible
1969 Fleetwood Brougham
1969 Sedan de Ville
1959 Sedan deVille

TJ Hopland

Interesting that its apparently that 'easy'.   Or maybe that is the problem, yours is just loose(ish) for some reason and that is how it drifted in the first place?     Now days you would just assume that the worker that was installing them just always puts them at 72 even if its 90 in the shop because they just don't give a crap but you would hope the work ethic was a little better back when these were made, maybe not tho. 
73 Eldo convert w/FiTech EFI, over 30 years of ownership and counting
Somewhat recently deceased daily drivers, 80 Eldo Diesel & 90 CDV
And other assorted stuff I keep buying for some reason

Big Fins

Ya think maybe that age has a say so in there somewhere? We'll never know.
Current:
1976 Eldorado Convertible in Crystal Blue Fire Mist with white interior and top. (Misty Blue)

Past and much missed:
1977 Brougham de Elegance
1976 Eldorado Convertible
1972 Fleetwood Brougham
1971 Sedan de Ville
1970 de Ville Convertible
1969 Fleetwood Brougham
1969 Sedan de Ville
1959 Sedan deVille