To replace the TDC (Top Dead Center) sensor on a Renault Megane, first disconnect the battery to ensure safety. Locate the TDC sensor, typically found near the crankshaft pulley or on the engine block. Remove any necessary components for access, then disconnect the electrical connector and unscrew the sensor. Install the new sensor by reversing the steps, ensuring it's properly secured, and reconnect the battery.
at the back
How do you change the TDC sensor on the Renault Scenic RX4
The coolant temperature sensor in a Renault Megane Scenic is located on the right hand side of the engine as you are looking at it. It is located just above the TDC sensor.
Tdc sensor is located lower front of gearbox on Renault laguna diesel engine 2001 onward.
renault magene coupe..2ltr sensor 8200156362
here is pictures and advice on how to replace it :) http://www.renaultforums.co.uk/showthread.php?t=10062
The TDC (Top Dead Center) sensor on a 2011 Renault Megane is typically located near the engine block, often on the timing cover or near the crankshaft pulley. It helps determine the position of the crankshaft for optimal engine timing. For precise location, it's best to refer to the vehicle's service manual or consult a professional mechanic, as the exact position can vary based on the engine type.
In K9K engine series: If you mean the tdc in order to lock crankshaft to replace timing belt, in front of the engine near the flywheel zone right below the oil pressure valve there is a small bolt (usually with a torx head "star"). Removing that bolt and inserting a special locking tool through that hole ,will lock crankshaft right on the tdc. No he means the TDC Sensor which is on top of the bell housing it is held in place on a banana shaped plate which is bolted to the engine with 2 10mm bolts.
Improve capacity
an awful lot of Renault drivers suffer poor starting and a simple replacement of TDC or flywheel sensor solves it - might be carbon related - costs fifty quid or so plus a little labour in most places and main dealers don't seem to know about this common problem The reason is because the steel tip of the TDC sensor which picks up a signal from the flywheel telling the ECU when to fire the spark plugs gets dirty after a year or two and cannot get the signal. There is no need to pay up to ££90 for a new one at a Renault garage just simply remove it and clean the tip! also clean the connector.
It sends information to your ECM computer to inform cylinder one when to spark and to get the fuel mixture correct.
You have to remove the battery to take it out and see it better, one the battery is out you will see two small bolts that hold the sensor in pace over the crankshaft. Peter