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How to Check the Temperature Sensor Functionality

Model: (Various brands) Various
Part: Engine coolant temperature sensor

Video tutorial

To check if the coolant temperature sensor (commonly known as the bulb) is functioning correctly, proceed as follows: connect the multimeter probes to the two pins inside the connector, possibly using tweezers, set the multimeter to the resistance reading scale, secure the sensor to a support, and heat it using a heat gun: if the sensor works, as the temperature increases, the electrical resistance value should decrease, and it will increase as it cools.


Updated on 20 February 2026 by ScegliAuto


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How to Remove the Toll Tag Holder from the Car Windscreen

The toll tag holder is usually attached to the car windscreen to ensure that the toll tag functions immediately when passing through barriers. However, if you decide to remove the holder, you should follow this procedure: - Insert the toll tag into the holder; - Pull the holder inwards to detach it from the windscreen; you can use a glass scraper or a stiff plastic card to assist you; After removing the holder, it is essential to remove the adhesive from the windscreen. To remove the adhesive, we recommend using a solvent-based spray that will remove the glue without clouding the area.

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