1994 Buick Park Avenue valve body or transmission

1994 BUICK PARK AVENUE
180,000 MILES • 3.8L • V6 • TURBO • FWD • AUTOMATIC
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RFE1964RFE
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When in (D) vehicle will accelerate to about 20 mph then transmission disengages and engine will red line. If in (3) vehicle will maintain top speed 40 mph and trans will remain engaged. RPM @ 4000. Not sure which is the problem. Many friends advise to clean the valve body. Other advise to rebuild the transmission.
May 3, 2014 at 9:29 AM
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ASEMASTER6371
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cleaning valve body is a possibility but I doubt it. you have internal failures here causing it to disengage completely. re building is most likely the correct answer


roy
May 3, 2014 at 9:41 AM