What is a TDC sensor?

Answer

A TDC sensor is a device located on the top of the engine that allows for precision timing of pistons. It is also known as the top dead center sensor as it indicates the moment when the firing piston is either as far or close as possible from the measuring device. The TDC sensor is featured most in Honda vehicles.

The TDC sensor plays an integral role in improving the timing in precision vehicles and those intended for street racing. It is also important for executing routine maintenance in Honda, Lincoln and Nissan engines.

TDC sensors are present between the crank shaft and the pistons, assisting with keeping the strokes of a reciprocating engine perfectly timed. Every style and size of engine is outfitted with one of these devices and makes this small device an essential part of keeping a car functioning properly. When the TDC sensor is off, the piston timing in a car skips and results in engine damage.

Internal combustion engines require that timing and engine speed be monitored and updated on a regular basis so as to avoid problems with piston strikes and triggering momentum in the vehicle. The TDC sensor ensures that ignition is reached successfully every time a key is inserted into the steering column.

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Tdc sensor is located lower front of gearbox on Renault laguna diesel engine 2001 onward.
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