
Using your fingers, hand screw the coolant temperature sensor into its placement hole until the sensor is flush against the engine. Remove the extension from the ratchet and hand-tighten the sensor manually with the socket and extension. Warning: The sensor needs to be installed very carefully and not tightened down too tight.
Full Answer
How do I check the coolant temperature sensor on my car?
Connect an OBD2 Scanner and look for related trouble codes. Check the live data to see the temperature from the sensor. If it is way off the range, check the wirings, and replace the sensor. Locate the coolant temperature sensor in your vehicle by referring to the service manual. Find the coolant temperature sensor and remove the connector plugs.
Where is the coolant temperature sensor located on a Honda Accord?
Click here to order! Replacing the coolant temperature sensor is a relatively easy job if you have a lot of patience. The sensor is located on the left side of the engine attached to the water pipe that comes out of the head. While it is not difficult to replace you will be working in a small and cramped environment.
What happens when the coolant temperature sensor goes bad?
The engine coolant temperature sensor can have a hard impact on the air-fuel mixture. A bad air-fuel mixture can also cause the engine performance to drop drastically. If you feel that the engine performance is not what it has been before, it may be due to a faulty engine coolant temperature sensor.
How do I remove the temperature sensor from the housing?
The sensor is actually held in place by a small clip that sits in a channel on the housing. Use a flathead screwdriver and pry/slide the clip back out of the housing.

How do I change my engine temperature sensor?
0:246:32Changing Coolant Temperature Sensor - YouTubeYouTubeStart of suggested clipEnd of suggested clipIt doesn't need to come completely off just loosen it up so when we go to drain it it can actuallyMoreIt doesn't need to come completely off just loosen it up so when we go to drain it it can actually drain. By not loosening this up it's going to hold the pressure in the radiator.
Where is the engine temperature sensor located?
0:311:42Engine Coolant Temperature Sensor Location - YouTubeYouTubeStart of suggested clipEnd of suggested clipNow some of the early models had two sensors in the same location. But you're looking for the oneMoreNow some of the early models had two sensors in the same location. But you're looking for the one with the two wires on it and it's down here under the egi valve. And it's coming at the view.
What are the symptoms of a faulty temperature sensor?
Following are the significant symptoms of a bad coolant temp sensor:Check Engine Light.Engine Overheating.Poor Fuel Economy.Poor Engine Performance.Broken Water Pump.Control of Cooling Fan.Black Smoke From Exhaust Pipe.
Where is the cooling temperature sensor?
On most vehicles, the coolant temperature sensor (CTS) can be found somewhere near the engine thermostat, which allows it to function optimally. The tip of the CTS is probably located right next to the engine coolant.
What problems can a bad coolant temperature sensor cause?
A faulty sensor can cause the fuel mixture to adjust. This causes the engine to shake or vibrate when the vehicle is at low speed and can even bring about strange behaviors, power losses, etc. Engines are highly sensitive, especially to inappropriate air-fuel mixtures at idle.
How do I know if my temperature sensor is working?
1:005:43How to Test an Engine Coolant Temperature Sensor - YouTubeYouTubeStart of suggested clipEnd of suggested clipThe resistance at boiling temperature which is 212 Fahrenheit is supposed to be between 1760 ohms toMoreThe resistance at boiling temperature which is 212 Fahrenheit is supposed to be between 1760 ohms to two thousand three hundred and eighty ohms.
How much does it cost to replace a temperature 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. Taxes and fees aren't included in the estimate.
Can a temp sensor affect engine starting?
The sensor will not cause a no start. It could cause a hard start and a rich or lean condition only.
Is there a fuse for coolant temperature sensor?
There isn't one per se. There will be a fused wire with voltage to the instrument cluster (your owners manual should indicate which fuse), but the temperature sensor is providing a variable "resistance to ground," which the temperature gauge in the dash is reflecting.
How do you remove a temperature sensor?
1:005:25How to Replace Coolant Temperature Sensor 1994-2004 Chevy S-10YouTubeStart of suggested clipEnd of suggested clipYou can either pull the clip right out of this or of course you can just disconnect the harness.MoreYou can either pull the clip right out of this or of course you can just disconnect the harness. Itself. Now we're going to come right here and loosen up.
Do you need to drain coolant to change coolant temperature sensor?
Do you need to drain coolant to change coolant temperature sensor? Open the radiator valve and drain about two to three quarts of coolant. You only need to remove enough to drop the level below the sensor.
Where is the temperature sensor on a valve cover?
The temperature sensor is located directly to the right of your valve cover as you can see in the picture.
How to tell if temperature sensor is bad?
Most of the time you will be able to tell that you have a bad sensor by the way your temperature gauge needle randomly floats around or stays at zero or a fourth of the way up when your car is fully warmed up. When my sensor first went out the needle on the temperature gauge just stuck on zero.
Can you change coolant in a car after it's been running?
Coolant in your car after it has been running is extremely hot. So if you do not want to risk a 200 degree Fahrenheit money shot right to your face, then do not attempt to change this sensor until your car is completely cooled down.
Where is the coolant temperature sensor located?
The engine coolant temperature sensor is usually located on the engine block or cylinder head. It is often installed on a plastic hose on the coolant’s inlet. Different brands and car manufacturers have different ways of placing the coolant temperature sensor depending on the car design. Some vehicles may have more than one temperature sensor, ...
How to check a coolant sensor?
How to Diagnose a Faulty Engine Coolant Temperature Sensor? 1 Connect an OBD2 Scanner and look for related trouble codes. Check the live data to see the temperature from the sensor. If it is way off the range, check the wirings, and replace the sensor. 2 Locate the coolant temperature sensor in your vehicle by referring to the service manual. 3 Find the coolant temperature sensor and remove the connector plugs. 4 If you have two pins on the coolant temperature sensor, you can try ohm measure between these two pins. 5 Check your repair manual for the correct ohm-value at a given temperature. 6 If the value is wrong – replace the sensor. 7 If it seems fine, check the wirings and connectors between the coolant temperature sensor and the engine control module.
What does a faulty ECT sensor do?
A faulty ECT sensor can send a false signal to the onboard computer, resulting in an incorrect air-fuel mixture. For example, a faulty sensor can send a signal indicating the engine is cold when it is not, and more fuel will heat the engine quickly.
Why won't my electric cooling fan come on?
Electrical Cooling Fans not coming on. 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 ...
How much does it cost to replace a coolant temperature sensor?
The average coolant temperature sensor replacement cost is between $50 to $250, depending on the car model and labor costs. A coolant temperature sensor costs 30$ to 100$, and the labor costs 20$ to 150$.
Why does my fan not turn on?
If the fan receives a false signal , the fan might not turn on, causing the engine to overheat. Some vehicles have a separate coolant temperature sensor for the fan, but many cars use the same sensor.
What does it mean when a car lights up with a check engine light?
If the computer detects any problem with the sensor’s circuit, it will illuminate the check engine light, indicating that the car needs an inspection. If you see a check engine light on your dashboard, it is time to check the trouble codes with an OBD2 scanner.
What happens if your coolant sensor fails?
A bad engine coolant temperature sensor can produce a lot of symptoms. When the sensor fails, your engine will no longer be as efficient. Below is a list of the most common symptoms that you may experience:
Can VW overheat?
The cooling fans will not be turned on if the computer does receive the correct reading. This will cause your engine to overheat. Never run your VW with an overheating engine. When it overheats, immediately pull off the road and turn off the engine. Continuing to drive an overheating vehicle will lead to engine damage and possible engine failure.