Chrysler

I bought a this car 3 weeks ago and the tranny is starting to shift abnormal between 1st and 2nd gear.i took it in and had a tranny flush and filter but that changed nothing.the mechanic says that the diag came up with no errors and my tranny is fine.what could the problem be? thanx

Something is obviously wrong with the transmission. make sure the mechanic replaced the old fluid with atf+4. read my answer to this question.http://answers.yahoo.com/question/index;_ylt=angwmjoyp6ys6r8inwdfnitty6ix?qid=20070528172043aavcgfg&show=7#profile-info-aa11095517the diagnosis could be incorrect or lacking. have the mechanic (or another mechanic at another shop) test drive it while you explain the problem. the tranny could be bad if the previous owner did not replace the fluid regularly, if at all, or if it had an incorrect fluid level for a while. it could be bad if dexron iii/mercon atf was used for a while. that transmission requires atf+4, which may seem expensive, but is necessary. do not use atf+4-compatible or atf+4-suitable fluid. use the real stuff.