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DQS not downshifting

4K views 11 replies 5 participants last post by  fipenna  
#1 ·
2018 1260S. DQS upshifts just fine but no downshifts at all, ie: shift lever will not move down. Works like normal with the clutch. I tried turning DQS off and then back on and no change. In the past it worked just fine as long as the throttle was closed when downshifting. I did discover that with very very slight throttle, downshifting works just fine. My suspicion is that the TPS signal to the DQS is wonky. Anyone else have this problem? Find a fix? Ideas as to whether there is a reset for the TPS position?
 
#5 ·
Got it, it's the quickshifter itself. Likely culprit as there's a service campaign about rerouting the cable on the '19's and a superceded part number from the '18.

I still wonder why it works with slightly open throttle?