Why does my car have two coolant sensors?
Some cars use the engine coolant temperature sensor to control the electric cooling fans. You have two separate temperature sensors for the fans, dashboard gauge, and engine management in most cars.
How does a 2 wire coolant sensor work?
Today’s coolant temp senders have two wires, one wire is feed a small amount of voltage from the computer while the second wiring is read by the computer and the engine temperature determined. A coolant sensor wiring connector is held in place using a safety clip.
How many coolant sensors are there?
The coolant sensor is typically located near the thermostat housing in the intake manifold. On a few vehicles, the coolant sensor may be located in the cylinder head, or there may be two coolant sensors (one for each cylinder bank in a V6 or V8 engine) or one for the PCM and a second for the cooling fan.
What sensor is next to the coolant temperature sensor?
RE: Sensor next to coolant temp sensor ?? It is the “coolant temperature sender.” There is even another sensor, the “coolant temperature switch” which turns the radiator fan on when the engine is getting too hot.
How much does it cost to replace coolant sensor?
The average price for an engine temperature sensor replacement is between $150 and $193. Labor costs are between $82 and $105 while parts are between $66 and $88.
Can you drive with a faulty coolant sensor?
It is possible to drive a vehicle with a faulty coolant temperature sensor as the management system defaults to a static reading. A vehicles coolant sensor is a critical component used by the engine management system. It directly effects, cooling and fueling of the engine and therefore effects how the engine performs.
Can a bad coolant sensor cause a car to turn over?
A bad coolant temperature sensor is something that is really easy to diagnose without using a multimeter. If a warm car continues to turn over and not start (assuming everything else is working correctly), the coolant temperature sensor is the culprit.
What should the coolant temperature sensor resistance be?
If the sensor isn’t working as it should be then there will be little or no change in the values. I don’t have the specs for your model year but the sensor resistance may be around 300 ohms when it as normal operating temperature. There may also be about a 8 to 1 factor in the resistance when it is cold and then at operating temperature.
How much does it cost to replace a coolant temperature sensor?
Unscrew the ECT sensor in an anticlockwise direction, similar to how a spark plug is removed. Install the new sensor and reconnect the connector cable. The average replacement cost of the Coolant Temperature Sensor is between $100 and $220. The labour cost is between $40 and $140 while the part itself costs between $50 and $80.
What kind of temp sensor does an 89-94 have?
Found two, one from an ’89 and another from a ’93 (note: the 89-94 engines have a temp sensor that takes a 12 mm socket or wrench, not a 19mm, so probably a different supplier and different characteristics from the 19mm version.