Where is the temperature sending unit?

Where is the temperature sending unit?

The Engine Coolant Temperature Sensor can be located in a few places, depending on the vehicle and its manufacturer. It is most often located close to the thermostat of the cooling system or inside of it. The cooling system is located beneath the air intake pipe and behind the right cylinder.

How does a single wire coolant temp sensor work?

The sensor works by measuring the temperature that’s being given off by the thermostat and/or the coolant itself. The temperature is then sent to the on-board control system. As the control system receives the temperature from the CTS, it may trigger the cooling fan to either shut off or turn on.

Does temp sensor need to be grounded?

It must thread directly into a metal well, and have a negative polarity. Like your thermostat housing on your engine. The engine is grounded at the battery therefore you single pole temp sensor will lower its resistance as temperature goes up – finally allowing current to flow.

How do you ground a temp gauge?

Remove the wire from the temperature-sending unit located on the engine (typically a dark green wire). Then connect the wire to a good ground. You can do this by using a jumper wire. Check the gauge, if the needle points to “Hot”, replace the sending unit.

How do you wire a temperature gauge on an engine?

Connect one wire from the gauge light to a grounded metal part of the vehicle chassis using an existing bolt or self-tapping screw. Connect the other wire to a positive (+) 12 volt wire from the dashboard lighting circuit using a wire tap-splice. Clip the gauge light into the hole in the back of the temperature gauge.

How do you know if you have a bad ECT sensor?

Symptoms of a bad or failing coolant temperature switch (sensor)

1. Poor fuel economy. One of the first symptoms associated with a problem with the coolant temperature sensor is poor fuel economy.
2. Black smoke from engine.
3. Overheating engine.
4. Check Engine Light comes on.