What Ohmmeter Reading Should You Get From Coolant Temperature Sensor
By Tsukasa Azuma
Terminal updated Feb 08, 2021
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If you lot are new to cars, the term coolant temperature sensor may be very new to you. This sensor is the mechanism that is responsible for telling the car'due south figurer the precise running temperature of the engine. This dictates the dynamics of how the engine will work. Prior to such sensors, choke was the machinery that did it. Now, with these temperature sensors, the process is more automatic, and the engine runs smoothly without freezing off in the winter and overheating in the summer.
But, why would y'all need to text information technology? Simply because it tin malfunction sometimes. If the coolant temperature sensor malfunctions or dies, you could face issues similar stalling, increased fuel emission, disrupted ignition timing, crude transmission, etc.
Testing the sensor isn't difficult. This blogs instructs you on how to. Hither is another of our maintenance tips that help you lot maintain your car amend.
Steps to Test a Coolant Temperature Sensor
There are four simple and easy steps that yous need to follow.
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Footstep i: Locating the Coolant Temperature Sensor
It is situated under the hood on the engine block. Merely open the latch of the hood and concord it open. Utilize a drop light if you lot need improve vision into the engine block. Peep in the eye of the pulleys at the front of the block. A small terminal coming out of the block itself will become visible. You volition see a wire pb coming out of the terminal. Exactly this terminal and wire lead is your car'due south coolant temperature sensor.
Stride 2: Connecting with Volt-Ohm Meter
But take a digital volt-ohm meter. If you don't have one, odds are that i of your neighbors might. Testing it with this meter is the surest fashion to tell if the sensor is fine or faulty.
Retrieve, connecting the right way is important. In fact, if you have a skilful understanding of the terminals, y'all can even jumpstart a automobile with a dead battery.
Here is how you must connect the meter to the sensor. Take the blackness pb of the meter and touch it to whatsoever solid metal. Now, accept the red lead and connect it to the terminal terminate of the coolant temperature sensor. Set the reading on the digital meter to 20k range.
Step three: Checking the Reading
You will now demand to plough on the engine and permit it run for at least 2 minutes to permit it to gain the running temperature. You will have to read the meter all this fourth dimension while the engine is running.
Pay attending to what you should be seeing on the digital meter. As the engine runs, y'all must see variations more than 200 ohms (variations between cold and warm engine). If you see that the difference is non more than 200, you are dealing with a faulty coolant temperature sensor.
Step 4: Checking a New Sensor
If y'all are checking a brand new sensor, you lot demand to follow this.
Adhere the black atomic number 82 of the volt-ohm meter to the trunk of the cold sensor (this is earlier turning the engine on). The reading should be 2000 ohm approx. then cheque the sensor in the warm sensor (after the engine is run). If the reading is not style lower than 2000ohm, yous accept a broke coolant temperature sensor.
In case you find it to be faulty, you lot must replace it at the soonest. If not, it tin can crusade quite a few issues some of which we mentioned right at the start of this blog.
Source: https://carfromjapan.com/article/car-maintenance/headed-test-coolant-temperature-sensor-heres/
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