1990 Lexus LS 400

Transmission problem
1990 Lexus LS 400 V8 Two Wheel Drive Automatic 200000 miles

my car move in reverse perfect but won't go foward. If I start in reverse (at a slow speed ), and throw into drive it catches and drive for awhile( I know I shouldn't do that but I figured it need to be overhauled anyway. Could it be that something tighten's up when I do that? Or could this be an adjustment problem?
May 1, 2008.

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