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The coolant temp sensor on a 97 Buick Century is on the side of the radiator. It is just below the radiator cap.
this code is for the engine coolant temp. sensor. replace it.
Remove the upper intake and there it is.
how to replace the throttle position sensor on a 97 nissan altama
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Replace the engine coolant temp sensor
the intake air temp sensor is in the inlet manifold
The engine coolant temp (ECT) sensor on that 97 S10 2.2L would be found close to the thermostat.
Popping noice on my 97 bravada
THE temp sending unit 4 the inside gauge usally has 1 wire & the sending unit 4 the Computer has 2 wires.
Same thing happened to my 97 buick Lesabre, I had to have mine replaced. Senor was was higher than outside temp so the a/c was not coooling the car. Sorry i can't tell you how to replace but it was not very expensive.
Directly behind the top radiator hose to the engine.