Ford Taurus 2002 shudders when stopped and going up hill

azford

2002 Ford Taurus with 130K miles shudders when accelerating uphill around 40-50 mph. ALso shudders when stopped at a light with brakes on. Mechanic said there was air bubbles in the transmission fluid and it was overfilled, and suggested transmission flush. Did that but the problem seems worse now. Any other suggestions? Water pump had to be replaced as it was leaking before. That is the only major work that has been done in the last several months.

lunashuman2

Your torque converter might be bad.