When attempting to start my Rav 4, yesterday, the engine as well as the starter did not sound right, whining as well as a lot of knocking in the engine. I turned off the car and attempted to start again and this time the car started and it felt like I was inside a washing machine, shaking and tremendous engine knocking. I had the car flat bedded to my mechanic that day. He started the car with no problems and use it all day. He hook it up to read the codes and nothing showed up. He checked all fluid levels which were fine and has no answer for what happen.