How to Trick Coolant Temp Sensor

When it comes to keeping your car running smoothly, a few things are as important as the coolant temperature sensor. This little device helps maintain the engine’s ideal operating temperature by reading the coolant temperature and sending that information to the car’s computer.

How to Trick Coolant Temp Sensor

If your coolant temp sensor is sending bad data to your car’s computer, it can cause all sorts of problems, including reduced fuel economy and impaired performance. In this article, we’ll show you how to trick coolant temp sensor so that you can keep your car running like a champ!

What Is a Coolant Temp Sensor?

A coolant temp sensor is a small device that measures the temperature of your engine’s coolant. The sensor is usually located near the thermostat, and it sends a signal to the engine computer that tells it how hot the coolant is. If the coolant gets too hot, the computer can take steps to prevent the engine from overheating.

For example, it might open the radiator vents or turn on the engine fans. In some cases, the computer may even shut down the engine to prevent damage. Coolant temp sensors are an essential part of any modern engine, and they can help to keep your car running smoothly and efficiently.

Why Might You Need to Trick Coolant Temp Sensor?

A coolant temperature sensor (CTS) is a vital piece of automotive equipment that helps to keep your engine at the correct operating temperature. However, there are times when the CTS may need to be tricked into preventing the engine from overheating.

For example, if you live in a hot climate and regularly drive in stop-and-go traffic, the CTS may need to be tricked into preventing the engine from overheating. In addition, if you frequently tow heavy loads or participate in off-road driving, the CTS may need to be tricked.

While there are several ways to trick the CTS, installing a resistor in the line between the CTS and the engine computer is the most common method. By doing this, you can fool the engine computer into thinking that the coolant is cooler than it actually is, and as a result, the engine will run at a lower temperature.

While tricking the CTS is not ideal, it can be a necessary measure when trying to prevent your engine from overheating.

Trick Coolant Temp  Sensor

5 Tips to Follow on How to Trick Coolant Temp Sensor

If your car’s coolant temp sensor is giving you trouble, there is a way to trick it. All you need is a piece of wire and a little bit of creativity. With this simple hack, you can bypass the sensor and get your car running again in no time.

Here’s How to Do It:

1. Things You’ll Need

You will need a few simple items to trick the coolant temp sensor.

First, you will need some electrical tape. Second, you will need a small container filled with ice water. Finally, you will need a thermometer to measure the temperature of the water in the container.

2. Prepare the Container

First, take the container of ice water and place it in front of the coolant temp sensor. Next, use the electrical tape to secure the thermometer to the side of the container. Make sure that the thermometer is placed so that it can accurately measure the temperature of the water.

3. Trick the Sensor

Now, it’s time to trick the sensor. To do this, simply place the wire in the container of ice water. The wire should be placed to complete the circuit between the sensor and the ground. When the wire is in place, the sensor will read the temperature of the water instead of the engine’s temperature. This will allow you to bypass the sensor and get your car running again.

4. Remove the Wire

Once your car is running, you can remove the wire from the container of ice water. Make sure to unplug the wire from the sensor before removing it from the water. Otherwise, you may damage the sensor.

Trick the Sensor

5. Test It Out

Now that you’ve bypassed the sensor, it’s time to test it out. Start your car and let it idle for a few minutes. If everything is working properly, the coolant temp sensor will be tricked, and your car will run smoothly.

With this simple trick, you can bypass the coolant temp sensor and get your car running again. Be sure to use caution when working with the engine, and always consult a professional if you’re not sure what you’re doing.

That’s it! You’ve now learned how to trick coolant temp sensor. With this knowledge, you can keep your car running smoothly, even when the sensor is acting up.

How to Trick Coolant Temp Sensor on a Race Car

In order to ensure your engine is running at optimal temperatures, it is important to have a functional coolant temp sensor. However, if you are racing your car, you may want to trick the sensor into making your engine appear cooler than it actually is. This can be beneficial because it will cause the engine to run richer, which can improve performance.

Additionally, it can prevent the engine from entering into a lean condition, which can be dangerous. You can trick your coolant temp sensor in a few different ways. One way is to install a resistor in the wiring harness. This will cause the sensor to read a lower temperature than what is actually present.

Another way is to add an inline filter between the sensor and the ECU. This will cause the ECU to receive false information about the coolant temperature, and as a result, it will make adjustments accordingly. Tricking your coolant temp sensor is a simple way to improve the performance of your race car.

Keep in mind, however, that it is also important to monitor actual engine temperatures carefully to avoid damaging your engine.

Car's Coolant Temp Sensor

Trick Your Car’s Coolant Temp Sensor for Better Performance

Most cars these days are equipped with a coolant temp sensor. This little gadget monitors the temperature of your engine’s coolant and sends a signal to the computer, which then adjusts the fuel mixture accordingly. Unfortunately, the factory settings for many of these sensors are not optimal for performance driving.

But there’s an easy fix: by tricking the sensor, you can lean out the fuel mixture and thereby improve your car’s performance. The best way to do this is to install a resistor in line with the sensor. Doing so will cause the computer to think that the coolant is cooler than it is, resulting in a leaner fuel mixture.

Of course, you’ll need to be careful not to lean out the mixture too much, as this can lead to engine damage. But a little experimentation will soon reveal the perfect setting for your car. So if you’re looking for a quick and easy performance boost, tricking your coolant temp sensor is definitely worth a try.

How to Tell if Your Coolant Temp Sensor Is Bad

If your car’s engine is overheating, it could be due to a faulty coolant temp sensor. Here’s how you can tell if your sensor is bad and what you can do to fix it.

When your engine overheats, you’ll first notice the temperature gauge on your dash shooting up into the red zone. If this happens, it’s important to pull over and turn off your engine as soon as possible to prevent damage.

Once your engine has cooled down, check the coolant level in the radiator. If it’s low, that’s a sign that your coolant temp sensor may be faulty. The sensor is responsible for monitoring the coolant level and sending a signal to the engine control unit (ECU) when it gets low. If the signal isn’t received, the ECU won’t trigger the radiator fan to turn on, leading to overheating.

To test whether or not your sensor is working properly, you’ll need a multimeter. First, with the engine off, disconnect the sensor and set your multimeter to ohms mode. Next, touch one of the multimeter probes to one of the sensor terminals and touch the other probe to the other terminal.

Coolant Temp Sensor

You should see a reading of between 0.5 and 2 ohms. If you don’t see reading or if the reading is outside of that range, then your sensor is most likely faulty and will need to be replaced.

If your coolant temp sensor is indeed faulty, don’t worry – it’s a relatively easy and inexpensive fix. You can purchase a replacement sensor at your local auto parts store and install it yourself in just a few minutes. Or, if you’re not comfortable doing it yourself, any qualified mechanic can do it for you.

What Are the Consequences of Not Having a Working Coolant Temp Sensor

A coolant temperature sensor (CTS) is a vital component of any engine, and its failure can have serious consequences. Without a working CTS, the engine will run too hot and may overheat, causing serious damage to the cylinder heads and other internals.

In addition, the CTS helps to regulate the air/fuel mixture, and without it, the engine will run lean, resulting in reduced performance and fuel economy. In extreme cases, a lean mixture can cause engine knock and may even lead to engine failure. Therefore, it is essential to make sure that the CTS is in good working condition to avoid potential engine damage.


By now, you should have a good understanding of how to trick coolant temp sensor and get more performance out of your vehicle. Remember, always use caution when working on your car and be sure to consult with a professional if you are not comfortable performing these tasks yourself. Have fun experimenting with different methods and see what works best for

Louis Wein

Louis Wein

Louis has always been fascinated by cars. He loves the way they look, the sound of the engine, and how they make him feel when he's driving. He is always keen to learn more about different mechanics of cars and how the engine contributes to other aspects of the car. As an automotive technician with over 10 years of experience, he knew how they worked and loved taking them apart to see how they went back together. He was especially interested in the mechanics of combustion engines and loved finding ways to make them more efficient. He loves to work on cars and help people keep their vehicles running smoothly. As a senior editor, he enjoys contributing to Diy quickly because it allows him to share his knowledge and expertise with others.

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