Question about 1994 Cadillac DeVille

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1994 cadillac deville concours

Can anyone tell me where the engine coolant temperature sensor is located on a 1994 cadillac deville concours

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  • tallpinesqhs Oct 14, 2008

    The problem we have been having with the car is overheating, the coolant bubbles in the overflow tank, the computer tells us the engine coolant is hot, then says engine overheating, then shut down motor, we replaced radiatior, thermostat, radiator cap, and bled the system while filling with coolant, as per mechanics instructions. The car still overheats. We had the engine checked for blown head gasket, etc, checks out fine. It was suggested to install a new coolant temperature sensor. Also, both fans are in proper working order. Thanks for your help

  • tallpinesqhs Oct 14, 2008

    Ok, here goes. With the radiator cap off and the engine running should their be spitting out the tank?? When the cap is on you can hear bubbling similar to boiling. Also, how do you bleed the system, the chilton manual does not mention that, or if it does, we can't find that info. Thanks for helping

  • jsjanda Oct 20, 2008

    i have same problem with 1998 deville concours even replaced the motor.new rad .cap .rear hoses

  • Robert McClain Jan 02, 2009

    I also have a cooling problem with my 1994 Deville Concours. Car was running hot and shutting off. Gaskets were blown. replaced gaskets, new radiator, thermostate and still car overheating. Water pump working fine. What other problem could it be?

  • moncada13 May 12, 2009

    The problem we have been having with the car is overheating, the coolant bubbles in the overflow tank, the computer tells us the engine coolant is hot, we replaced radiatior, is no thermostat, radiator cap, and bled the system while filling with coolant, as per mechanics instructions. The car still overheats. the whater pomp is good.and no licks, and flush the radiatior . and still over heat. but it take about 20 min to over heat . is not white smoke . or whater spiting out the radiatior went the cap is off. and the car rans ok , and no whater on the oil . so what can be

  • yadayada
    yadayada May 11, 2010

    Are you talking about the computer temp sensor (ECT) or the guage sender??

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On my car, which is the same as yours, it is located on the manifold top back left. Pictures in the book just show it on top.

Posted on Jul 24, 2009

  • Tommy Langley
    Tommy Langley Feb 14, 2014

    not real sure they r the same 1 is 1994 and mine is 2004 THERE IS NO PICTURES OF THIS RELAY IN MY SERVICE MANUAL,,..

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Look if the engine is doing what you say then it is overheating and there is no problem with the sensor, remember the sensor only tells what is going on, it does not cause anything like overheating. Have you bled the system of air, there is a factory procedure to do this.

Posted on Oct 14, 2008

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Click over pic for zoom...

zjlimited_1119.jpg

Fig. Showing the location of MAP Sensor and other components on the front of the engine: 1. Manifold Absolute Pressure (MAP) Sensor; 2. Idle Air Control (IAC) Valve; 3. Engine Coolant Temperature (ECT) Sensor; 4. Throttle Position (TP) Sensor

zjlimited_1120.jpg

Fig. Engine coolant temperature sensor (1).

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