Transmission needs to be replaced or rebuilt. As normal wear takes place over many thousands of miles, the computer updates shift points to produce solid, crisp shifts similar to when it was new. Eventually it can't update enough to overcome the internal wear and slippage occurs.
Your mechanic can connect a scanner, (hand-held computer) to the car and read out the "clutch volume index" (CVI). This is a set of four numbers indicating how many ccs of fluid are required to apply each clutch pack. From experience, they can tell you exactly what is wrong internally, and whether repair is possible or if replacement is a more economical alternative.
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Sunday, November 29th, 2009 AT 5:59 PM