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Where is the coolant temperature sensor located on a 2003 Cadillac Deville?

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On the driver side under the hood, located near the outlet heater hose has a connector (electrical) Screw out counter clockwise

Posted on Aug 26, 2010

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Failed ect sensor thermostat reading over 270f


It means you should try replacing the engine coolant temperature sensor as it has probably failed (it's located on the driver's end of the engine at the middle about half way down).

Jan 25, 2018 | 1996 Cadillac DeVille

1 Answer

Location of cooling fan sending unit 1999 cadillac deville?


If you are refering to the Engine Coolant Temperature (ECT) sensor,it is located on the right rear of the engine below the exhaust gas recirculation (EGR) valve.

HINT: If your Deville is equipped with the analog instrument cluster and the temperature gauge is working, or if you have the digital instrument cluster and the driver information center (DIC) has been diplaying messages telling you that the engine is hot, the problem with your engine cooling fans is NOT the sensor.

Jun 02, 2012 | Cars & Trucks

1 Answer

Where can i find the ect sensor on my 1999 cadillac deville


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).

Apr 28, 2011 | 1999 Cadillac DeVille

1 Answer

Where is the cooling fan fuse and coolant temp sensor on a 97 deville?


I read on RepairPath.com that the coolant temperature sensor is located on the left side of the engine down below the panel that holds the fuses and below the cruise control on the 'left' hand side. It screws in to the manifold, I believe.

Jun 28, 2010 | 1997 Cadillac DeVille

2 Answers

Location of coolant temp sensor


where can locate the engine coolant temperture sensor.

Jun 20, 2009 | 1998 Cadillac DeVille

1 Answer

2001 Cadillac Deville coolant bleed screw Location??


I had the same problem with my 2001 Cadillac Deville, like you I had replaced literally everything thermostat, water pump, radiator, temperature sensor, reservoir and cap, hoses etc....I didnt have any leakage. I was told I had air in my coolant system. After a lot of research and running across the right mechanic I was able to locate the bleeder and remove the air from my lines. No problem since. The bleeder is located on yhe left side of the radiator on the crossover, mines was sideways..Hope this helps someone before they spend money for new head gasket problems..Try this it helped me....

Mar 25, 2009 | 2001 Cadillac DeVille

1 Answer

Location of coolant temperature sensor


Maybe this will help . although this is from a 1997 Caddy.


Cadillac DeVille Engine Coolant Temperature (ECT) Sensor Location62451583.gif

Nov 20, 2008 | 2004 Cadillac CTS

3 Answers

1994 cadillac deville concours


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.

Oct 14, 2008 | 1994 Cadillac DeVille

1 Answer

2002 Cadillac Coolant sensor


The engine coolant temperature sensor is located on the driver side of the engine near the rear of the engine compartment

Oct 08, 2008 | 1999 Cadillac DeVille

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