Helo,



I have Mazda 6 almost used 180K. it was using perfectly but suddenlyhorrible vibration is started.

This vibration is not only steering vibration, it is fullcar vibration. It starts between 30-40 mph when I accelerate it. No vibrationabove or below from this speed and also no any vibration when it is coming downfrom 60 mph or when I am not accelerating.



Please help to diagnose the problem. I am really tired, mechanicis saying it is balancing issue but balancing guy is saying go to see mechanic.

 

Did you ever figure out this problem? Mine started doing the same thing. I have just under 140k miles and between 35-40mph the car will start to shake pretty bad. Letting off the throttle or giving it gas will typically make it go away. No check engine light or warnings at all. I was thinking suspension myself, but was curious about other opinions.