I’m going to be taking my R52 into front end service mode soon to change my knock sensor. I’m wanting to knock out (no pun intended) some other maintenance things while I have it apart. I plan on changing the supercharger oil. I’m wondering about the crank position sensor. Is it a common part to go bad? Should I change it while I’m that far deep? Is there anything else I should do while I’m in there? Thanks! Car has 70k miles

 

It's usually the crank position sensor's o-ring that fails. A new one applied with some blue PERMATEX is good preventative maintenance.

 

Replace the harmonic damper too while you're in there. Mine crapped out on a road trip near 600 miles from home a couple years ago.

 

Ok I’ll look into that balancer. And sounds like I’ll do just the o-ring then. Thanks!

 

Plan on changing the o-rings for the water pump and flange too since you’ll be removing the supercharger.