Then warm it up with the hair drier and test it again. Where to Find the Coolant Temperature Sensor Different car manufacturers install the coolant temperature sensor differently. The Check Engine Light will remain on until the issue is addressed. Plus, they contain full trouble code descriptions and troubleshooting instructions. Step 3 - Check Readings For the testing process you will need to turn the engine on. HubPages Traffic Pixel This is used to collect data on traffic to articles and other pages on our site. How to test an Engine coolant temperature sensor Coolant Temperature Sensor Temperature °F Resistance Voltage -40°F 100,700Ω 4.
Symptoms of a Bad Coolant Temperature Sensor If your vehicle starts to use a lot more gasoline than usual, or black smoke is starting to come from the exhaust pipe, these are indicators that the coolant temperature sensor in your vehicle could be defective, and needs to be replaced. Of course you need to remove the sensor from the vehicle to use this method. This will cause the computer to think the engine is cold, even when it is not, and as a result will use more fuel than necessary. On the next video, you'll see an alternative method to test a sensor using water. A high idle that eventually goes down but only after the engine has warmed up. Then, uns … crew it. By using the thermometer, it won't take you long to figure out that the thermostat isn't working.
This can be any solid piece of metal. In severe cases, the black smoke may be considerable enough to warrant not driving the vehicle. Just as I started the car. Akismet This is used to detect comment spam. Unlike the cheaper Haynes and Chilton manuals that cover multiple year models, leaving the exact information you need to fix your car, these professional manuals cover your exact year, make, model. You should have a reading of approximately 2000 ohms.
Before the automated systems in vehicles, this was the sole purpose of the choke. Step 1 - Locate Coolant Temperature Sensor The coolant temperature sensor is located on the engine block under the hood. You can buy a service manual for your particular car make and model in most auto parts stores or online. Open the hood of your vehicle to find the coolant sensor. Make a note of these new pair of values. This will reduce , and may hinder engine performance.
There is also a larger vacuum line that plugs into it. The electrical resistance of a thermistor decreases as the temperature increases, and the resistance increases as the temperature decreases. Connect the black lead of the digital ohm meter to a solid grounding. If there are two sensors, one of them is the coolant temperature sensor while the other is more correctly called the coolant temperature sending unit, which sends information from the control unit to the dashboard of the car. No data is shared with Paypal unless you engage with this feature. However, it is usually in close proximity of the thermostat of the cooling system, or inside it.
The coolant temperature sensor, also known as the coolant temperature switch, is an engine management system sensor that is used to monitor the temperature of the. If you are towing, it will have to downshift more often, making for less fuel efficient operation. The coolant temperature sensor is one of the most important engine management sensors, as its reading plays a key role in calculations which affect engine performance. This article's testing info covers both. How does the coolant temperature sensor work? Below 30 mph it will lunge and sputter. Also, make sure to inspect the sensor electrical terminal for damage and corrosion, and check the circuit wires for possible damage. There is so much coolant that I think this is a way to get it all warmed up? I just changed the thermostat the old one was stuck open on my 96' Explorer.
Comscore ComScore is a media measurement and analytics company providing marketing data and analytics to enterprises, media and advertising agencies, and publishers. This is your coolant temperature sensor. It will stabilize after you drive for a while. Have any questions about this guide? Check the warm sensor in your engine. You can see the number through the windshield on the driver's side.
Other product and company names shown may be trademarks of their respective owners. See the diagram below for where to test voltage. This answer is for a 1990 ford thunderbird 3. It only takes a few minutes and you don't even have to remove the sensor from the engine for the troubleshooting procedure. Before turning the meter on, set the digital reading to the 20K range.
Login This is necessary to sign in to the HubPages Service. If you are trying to find Engine Coolant Temperature Sensor How To Test article fails to dwell right here, you can see from several of the articles that may suit your research. Next, connect the red lead to the terminal end of the coolant temperature sensor. On my 1990 Ranger 2. Maven This supports the Maven widget and search functionality. Rubicon Project This is an ad network.