So I started getting this pulsating vibration in my car about three weeks ago while just starting the car. I paid no attention to the sound it seemed to go away as I started driving, but not its alot worse. The best way I can describe the sound as I already stated is a pulsating vibration which is loudest from inside the car. I listened with the hood opened, by the front wheels, underneath the car, but its loudest from the inside. If it was something mechanical I would think it would be loudest from the outside of the car. Any info would be greatly appreciated. I am going to have my mechanic look at it but in the meantime I am just curious. I really don't like driving my car when there is something wrong with it unless I know its not a major issue.

 

if it were mine i would reset the ecu,,, if problem is still there then continue on with the mechanic or the troubleshooting route..