More progress

Driveshaft Shop One piece driveshaft problems

The refurb OEM 2 piece driveshaft was successful at eliminating the speed related vibration my car was experiencing.  So it would seem that mine was one of the cases where a single piece driveshaft caused an unwelcome vibration in the car.  Obviously spending the premium on a single piece driveshaft only to have to go and buy an OEM 2 piece style to remedy a problem caused by the 1 piece is not something I enjoy doing.  The annoyance was further compounded by my need to have the swap done at a shop, thus paying for the labor time, increasing the total wasted money on trying a single piece driveshaft.

The way I see it, there are a mixed bag of reviews floating around about the success of using a single piece driveshaft, some cars seem to be fine, others experience a vibration.  Given the cost premium and potential for problem I would never recommend a person purchase a single piece driveshaft for use on their S4 if they have the option of going with the tried and true OEM 2 piece unit.

At this point I’m not sure what will happen with this Driveshaft Shop one piece driveshaft.  I expect it will be sent back to the driveshaft shop for evaluation.  If it is determined that this driveshaft has a defect that could alter my opinion of the single piece.  If and when the driveshaft I have is analyzed I’ll post the results as an update.

F’ing Single Piece Driveshaft

After getting the car back on the road I discovered a slight vibration that would start around 40-50 mph growing more noticeable as speed increased to 60-70 mph.  It was unaffected by varying rpm.  I started troubleshooting with a trip to a shop to have the wheel balance checked.  That did not eliminate the vibration.  I then took the car back to the shop that routinely works on my car, HB Motorwerks, to see if they could diagnose the problem, their assessment was that it was related to the driveshaft.  I hate this type of troubleshooting where expensive and time consuming parts need to be swapped out.  At the moment I have a re-manufactured OEM two piece driveshaft being delivered from Wholesale Import Parts.  While I’m hopeful that this corrects the problem since if it doesn’t it will mean buying additional parts and more work changing them out, if it does turn out to be the Driveshaft Shop single piece driveshaft I’m going to be irate at wasting money trying this driveshaft.