1980 cadillac fleetwood coolant sensor ????
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RWD 19xx-1984 DeVille and Fleetwood,
1985-1996 Fleetwood and Brougham Forum Discussion, 1980 cadillac fleetwood coolant sensor ???? in Past Cadillac Vehicle Discussion; Hi guys, i have a problem with my fleetwood Since 1 month, the "STOP ENGINES TEMP" light run on the ...
  1. #1
    CORNE DE BRUME's Avatar
    CORNE DE BRUME is offline Cadillac Owners Member
    Automobile(s): 1980-FLEETWOOD BROUGHAM
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    Smile 1980 cadillac fleetwood coolant sensor ????

    Hi guys, i have a problem with my fleetwood

    Since 1 month, the "STOP ENGINES TEMP" light run on the dashboard ??
    When i put the key on the car, the light is OK .
    When the engine run, the same light run again, but low ?
    Have you an idea ?
    On the top of the engine, i see a sensor with a wire. When i Unplug the wire, i have the same problem...... the light run again on the dashboard.

    Thank for your help

    Didier from France

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  3. #2
    cadillac_al is offline Cadillac Owners Connoisseur
    Automobile(s): Cadillac 78 Seville, 78 Coupe de Ville, 92 Sedan de Ville
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    Re: 1980 cadillac fleetwood coolant sensor ????

    Does your horn work? My memory is foggy but I think I had that light on for years in my Seville until I replaced the horn relay.

  4. #3
    SafariOne is offline Cadillac Owners Fanatic
    Automobile(s): 1981Cadillac Fleetwood Brougham D'Elegance Coupe m
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    Re: 1980 cadillac fleetwood coolant sensor ????

    When you run the diagnostic codes does the temp. sensor code come up?? If you are changing the temp. sensor the manual will say you need a special tool, but I found that a flex head gear wrench did the trick... other wise you will be forever getting that puppy out of there.

  5. #4
    carnut is offline Cadillac Owners Master
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    Re: 1980 cadillac fleetwood coolant sensor ????

    The "STOP ENGINE TEMP" light comes on if the key is in the ignition ( engine off) and the drivers door is opened. I would suspect a faulty door jamb switch. The same switch that turns on the dome lights when you open the door!

  6. #5
    1980coupe's Avatar
    1980coupe is offline Cadillac Owners Connoisseur
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    Re: 1980 cadillac fleetwood coolant sensor ????

    Quote Originally Posted by SafariOne View Post
    When you run the diagnostic codes does the temp. sensor code come up?? If you are changing the temp. sensor the manual will say you need a special tool, but I found that a flex head gear wrench did the trick... other wise you will be forever getting that puppy out of there.
    You can't run diagnostic codes on this year Caddy.

  7. #6
    CORNE DE BRUME's Avatar
    CORNE DE BRUME is offline Cadillac Owners Member
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    Re: 1980 cadillac fleetwood coolant sensor ????

    Hello to all
    Thank you for your messages.
    I cleaned the water cooler of the car because the water was black and the color of rust.
    Since the lamp does not light up on the dashboard.
    Can you help me and tell me where is the temperature sensor on the engine (picture ?).
    thank you

  8. #7
    1980coupe's Avatar
    1980coupe is offline Cadillac Owners Connoisseur
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    Re: 1980 cadillac fleetwood coolant sensor ????

    follow the coolant hose where it leads to the engine and just below that you'll see the wires leading to it. I would scan an image but cannot locate my book right now, lol.

  9. #8
    CORNE DE BRUME's Avatar
    CORNE DE BRUME is offline Cadillac Owners Member
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    Re: 1980 cadillac fleetwood coolant sensor ????

    Hi
    Thinks for your help

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