My 1990 Volvo 740 Turbo sedan vibrates whenever I'm driving and whenever the car is idle, so basically all the time. I first felt it from the steering wheel and now I'm feeling and hearing it from my doors and seats. Not sure what may be causing this to happen? What should I be looking for as possible reasons to this problem? Thank you, I appreciate it!

- Noah

 

motor mounts/trans mount.

 

Does this vibration changes frequency and/or intensity if you rev the engine gently while in neutral or park ? Get those mounts fixed before something more serious breaks!