Join Date: Jan 2007
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I havent, what is the TDC sensor?
Its also called the crankshaft sensor. Its above the flywheel and tells the car when the pistons are at top dead centre for the firing order / sequence IIRC.
They tend to get dirty (covered in metal filings) and sometimes cleaning it is all is required.
Look at the gear box bellhousing where it attaches to the engine, its like a boomerang shape and has two bolts holding it to the engine, and an electrical connection. It might be obscured by a coolant pipe.
If you type in Top dead centre in the search box, you will find numerous posts on the subject. There is also a post with piccies to help you indentify the unit.
Currently in dave_mezza2006's garage:
2014 Vauxhall Astra Limited Edition 1.4 16v VVT Turbo