* Coolant Temperature Sensor (CTS): This is the most common sensor and provides the engine computer with information about the engine coolant temperature. It's often located in the intake manifold or engine block, near the thermostat housing. However, its precise location varies significantly between years and models.
* Oil Temperature Sensor (OTS): Some models may have an oil temperature sensor, usually located somewhere in the oil pan or oil filter housing. This is less common than the CTS.
To find the coolant temperature sensor (most likely what you're looking for), you'll need to:
1. Identify your specific engine code: This is usually stamped on a casting surface of the engine block.
2. Consult a repair manual: A repair manual specific to your year, make, and model of vehicle will show you a diagram of the engine and pinpoint the location of the various sensors.
3. Use an online parts diagram: Websites like AutoZone, Advance Auto Parts, or Napa Auto Parts often have online parts diagrams searchable by year, make, and model. These diagrams can help you locate the sensor.
Simply searching for "4.2L Chevy V6 coolant temperature sensor location [Year of Vehicle]" will likely yield helpful results on forums or repair sites. Providing the year and model of your vehicle will dramatically improve the accuracy of any answer.
