So, i need some help with my Fabia Mk1 -03 that destroys speed sensors for some reason.

 

The Fabia in question is a 1.4L 100hp (BBZ), 5-speed manual (GRY / 02T300052PX)?, built 2002.09 (according to what i could find).

The speedo gave up, pulled out the old speed sensor, fysically broken, bought a new one, put it in, speedo worked again. . . for about 3.2Km, then gave out again, pulled the new sensor out, and physically broken that aswell.

 

Any ideas what's going on here? :S

https://shopcar.parts/product_images/00114107_3698322735.jpg?big=1

the sensor in question, and the new one had only the small tip knocked of it.

///Lindbergz

Sounds like maybe the diff bearings are shot allowing the diff to move around and mash it possibly. Can you feel any movement at the driveshaft flange if you pull it up and down etc 

quick follow-up, never found any movement in the diff bearings, and went ahead and replace the entire transmission with another one. just easier