What engine ? could have come with 9 different one's .
Engine Coolant Temperature (ECT) Sensor (LY7)
In the engine compartment, in the left side of the left cylinder head, between cylinders 2 and 4
Engine Coolant Temperature (ECT) Sensor (L76)
Left front of the engine above the spark plug 1
SOURCE: Location of coolant temperature sensor
Maybe this will help . although this is from a 1997 Caddy.
Cadillac DeVille Engine Coolant Temperature (ECT) Sensor Location
SOURCE: 2003 cadillac cts coolant temperature sensor
I cant find a pic of the loctation.
It is under the intake in the back in the coolant bridge it is not bad
to change if you are not affaid to take the intakes off but to get to
it you have to take the intake off
SOURCE: 97 Pontiac Sunfire - where is the temperature sensor located?
the coolant temp sensor is located: Under hood, driver side, upper engine area, below
valve cover, mounted in cylinder head
SOURCE: replacement of coolant temperature sensor
located under intake in water crossover pipe,you can access the sensor by removing intake chamber box,then pcv hose connected to the block,the connector is orangeish 2pin,use a 19mmdeep socket on a 3/8 ratchet to get it loose,make sure engine is cool,also make sure there is a new brass washer with your new sensor,sometimes the old washer comes off when removing the sensor,sometimes it sticks to the pipe,some coolant will escape so make sure to top it off
SOURCE: where is the coolant sensor located for a pontiac grand am gt
It looks like this with a connector to it and is on the side of the engine block:
Look right under the radiator hose.
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