Where is Engine Coolant Temperature sensor on 3.9 liter 2006 Chevrolet impala?

The Engine Coolant Temperature (ECT) sensor on a 2006 Chevrolet Impala 3.9L is typically located on the intake manifold, near the thermostat housing. However, the exact location can vary slightly depending on the specific engine configuration.

To find it, you should:

1. Consult a repair manual: A Haynes or Chilton repair manual specific to your 2006 Chevrolet Impala 3.9L will have a diagram showing the exact location of the ECT sensor. This is the most reliable method.

2. Look near the thermostat housing: This is the most likely area. The thermostat housing is usually located on the engine's front, near the top. The ECT sensor is often a single-wire or two-wire sensor screwed into the intake manifold or a nearby fitting.

3. Use online resources: Search online for "2006 Chevrolet Impala 3.9L ECT sensor location" and look at images. However, be cautious, as images may not always be perfectly accurate for all variations.

Important Note: Before attempting any work on your vehicle, ensure the engine is completely cool to prevent burns. If you're not comfortable working on your car yourself, it's best to take it to a qualified mechanic.