I myself am not too familiar with car mechanics which is why I come to you for help. My brother is a mechanic and cannot seem to find the problem. A year ago, I purchased a 2010 Toyota Corolla LE from a dealership. Nothing stood out during the test drive. We were trying to push the car by speeding up really fast. It drove perfectly. After buying the car, I accelerated slowly while leaving the parking lot and was startled by huge clunk.
The Problem I now know when the clunk happens. When I accelerate in a straight line (slowly) the shift between 1st and 2nd causes a build up revving sound and then a big clunk which jolts the car. Keep in mind my car is an automatic. When the clunk hits, it almost feels like someone lightly rear-ended us. The first time I even looked back cause I thought I was hit. However, when I accelerate with a lot of gas, it seems to jump gears and it drives fine. The only problem is only ever with the change between 1st and 2nd gear.
Does anybody else have this problem or found a solution? I am wondering if I should just sell the car, put up with it, or take it to mechanic after mechanic looking to find the problem. Please help!