Hello experts! I'm seeking advice on an issue with my Matrix, which I recently purchased. When driving on rough roads, the gear sometimes disengages, and the speedometer drops to zero. However, it will then pick up again. This only happens on rough roads; on smooth roads, the car runs normally. Can anyone help me identify what might be causing this issue? I'd greatly appreciate your expertise!"

I presume that this car has a very high mileage and was poorly maintained by the previous owners and bad workmanship from auto technicians as well.

From you report, you may be needing a full transmission overhaul which will include replacement of clutch fibers as they may be badly worn or if badly damaged, a full replacement.

Pls do a scan first and lets have the results posted here. It will be a great pointer.