BinaryExpert
Member
Thanks all for sharing helpful information and helping others.
I bought a new 2019 Expy Max Platinum 3 months ago and drove about 6100 miles so far. Started from about 3 weeks ago, it does not drive as solid/quiet/smooth as before. I feel a very subtle vibration continuously coming from the bottom of the car (feel more clearly from acceleration pedal and a bit from steering wheel as well). It feels like a subtle metal grinding (and possibly dragging although I can't tell) and I feel it better when the car is coasting straight at low speed in the morning. Although I don't hear anymore, I (and my wife) also heard several times a pretty loud metallic noise/rattle for a very short period time (1~2 second). I suspect this is how it started. They don't seem to be related to steering/acceleration/braking as they are pronounced when the car is coasting straight. The speed does not seem to be related either. I still hear a small (not loud anymore) random metallic noise from the bottom from time to time mostly in the morning.
From symptoms, I suspect u-joint, brake disc/rotor, shaft connections or lack of lubrication, but it could be a completely different thing as the car mechanics are complex. Any advice or suggestions?
I bought a new 2019 Expy Max Platinum 3 months ago and drove about 6100 miles so far. Started from about 3 weeks ago, it does not drive as solid/quiet/smooth as before. I feel a very subtle vibration continuously coming from the bottom of the car (feel more clearly from acceleration pedal and a bit from steering wheel as well). It feels like a subtle metal grinding (and possibly dragging although I can't tell) and I feel it better when the car is coasting straight at low speed in the morning. Although I don't hear anymore, I (and my wife) also heard several times a pretty loud metallic noise/rattle for a very short period time (1~2 second). I suspect this is how it started. They don't seem to be related to steering/acceleration/braking as they are pronounced when the car is coasting straight. The speed does not seem to be related either. I still hear a small (not loud anymore) random metallic noise from the bottom from time to time mostly in the morning.
From symptoms, I suspect u-joint, brake disc/rotor, shaft connections or lack of lubrication, but it could be a completely different thing as the car mechanics are complex. Any advice or suggestions?