We're rolling reliably with no OBD or trouble codes (knock on wood veneer). But I'm not hearing my SC fire up and it feels as if something isn't actuating. Are there minimally invasive troubleshooting procedures recommended to determine if the supercharger is working as intended?

 

There is no on off switch for the supercharger as it's belt driven.

Is the supercharger drive belt intact?

 

yes- everything is spinning. As I understand, there is a vacuum bypass valve that sits at the back of the supercharger which is actuated via the ECU based on RPM. That indicates to me that the acutation of said valve would be an electronic subsystem... just checking to see if there is something obvious that I am missing electronically before I go pulling SC componentry to get to the quite buried bypass valve.

 

If you rev to 5,500 it’s impossible to miss the supercharger whine or the kick of acceleration.

that would be the most fun way to know if all’s well.

Z

 

There is a fuse for the intercooler pump/relay - you could check that is all working.

The bypass valve is vacuum operated - there is no ECU control:-

https://www.jaguarforums.com/forum/x...tuator-216249/

 

The resolution to this was nothing to do with the supercharger. In investigating my waste gate, I noted a LOT of slack in my throttle cable. Comparing it to pictures available, it was bent toward the reel. I removed, straightened, and removed the slack.

After a quick test drive and removing my ********* from my throat, I think that solved a good portion of any problem.

 

I’ve love to watch that medical procedure. Googling it brings up very little in the way of video evidence.



Z

PS / glad you found the main issue without too much trouble !