Hi All

This is becoming a bit of a nightmare for me. I have a single pin coolant temperature sensor. I replaced it and the new one, I realised in a few days, was not reading any resistance. I exchanged it for a new one and the new one within one day EXPLODED! Well maybe exploded is a bit of an exaggeration but really, the metal pin is missing and the plastic surround is cracked. My connector is missing the head cover and only the metal connector remains.

How is this happening?? Can there be some electrical fault shorting out the coolant sensor and ruining them? Am I getting a bad batch of sensors? Has anyone come across this before?

Regards

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1992 124 E200 (Euro)