When taking off some time the car will not shift out of low gear if I stop and turn the engine off and restart the car it works fine. There are time when I take off and the transmission is slipping like it is not engaged. Again turn the engine off and restart works fine. This is a intermittent problem will go weeks or days. Had code read and said it could be a intake manifold problem. The key could be. I understand this is a common problem on this car.