How long does a coolant temp sensor last?
about 100,000 miles
Often, the engine coolant temperature sensor must be replaced at about 100,000 miles. If you don’t properly maintain the engine cooling system, the sensor could fail much earlier.
Why do you need a coolant temp sensor?
That’s why in every engine, there is a coolant temp sensor to measure the engine’s fluid temperature and make sure it is at the right level. Once the coolant temperature sensor measures the temperature, it will send a signal to the on-board control system. This system gives a signal to the computer to keep or alter how the engine is functioning.
Can a bad coolant sensor cause a car to not start?
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. However, if your car has a single sensor, a bad engine coolant temperature sensor may result in your fans won’t start at all.
Where is the coolant temperature sensor on a Volkswagen?
The coolant temperature sensor is a common part that sometimes requires replacement on a Volkswagen. The coolant temperature sensor is exposed to the coolant flow inside the vehicle’s engine block or engine cylinder head, or both.
What should coolant temp be when engine is hot?
With a good OBD2 code reader, you can also check the live data and the parameters of the CTS sensor. Check that the temperature value of the CTS is around 80-90c when the engine is hot. A lot of engine coolant temperature sensors have two wires and the sensor is controlled by Ohm.
When your coolant temperature sensor should be replaced?
Often, the engine coolant temperature sensor must be replaced at about 100,000 miles. If you don’t properly maintain the engine cooling system, the sensor could fail much earlier. If that happens, the check engine light will come on, and then a service technician will use a diagnostic scan tool to determine the problem.
How do I change the coolant temp sensor?
Part 2 of 3: Remove and replace the coolant temperature sensor Make sure vehicle is on a level working area. Locate the coolant temperature sensor. The first item that needs to be completed after you compiled all of your tools and assets is to locate the coolant temperature Jack the front end for clearance. Remove radiator cap and overflow cap. Drain the radiator. Replace drain plug.
What are the symptoms of a bad coolant temperature sensor?
Another symptom of a problem with the coolant temperature sensor is an overheating engine. The coolant temperature sensor can also fail in a manner that causes it to send a permanently hot signal. This can cause the computer to incorrectly compensate for a lean signal, which can result in overheating, and even misfires or engine ping.
What are the symptoms of a bad temperature sensor sensor?
- Decrease Fuel Mileage. The temperature sensor is responsible for sending feedback information to the computer at specific resistances which will vary the engines power output causing the fuel mileage
- Check Engine Light. A cars computer is capable of reading the values of any sensor at any given time.
- Engine Will Overheat.