Originally Posted by jonnyangel04
found it, still no answer but John is on the problem, this problem has been around for awhile. I am thinking a NW pulley saver kit, and an NSK bearing should do the trick.
From Jerk to Chirp, the saga... - Page 2 - MBWorld.org Forums
unplug the supercharger clutch drive around see if the noise goes away. If it does you have your clutch engaging answer. Mine does not do it all the time so i have no way of really checking. Yours sounds pretty often I would think this would work for you.
I had the exact same thing happen to me as described in the MBWorld forum when I had my 178 pulley and my code3 installed coupled with the tune from Eurocharged. After a bunch of troubleshooting that did nothing i ended up requesting a new tune and it fixed the jerking problem. I was relieved the heavy jerk was gone but soonthereafter the chirp that the guys on the mb forum described started in. That lasted for about a month and just vanished randomly. Its very weird. I even had TVT check it out and he wasnt sure what was going on, suggested that it might be a failing pulley or belt slip. Havent had any problems since though. I also installed the DIY beltwrap kit installed in the process of troubleshooting, which I thought was putting too much pressure on my pullies but idk its stil on and the problem went away so I'm gonna leave it alone. Just thought I'd share
Brandon