Only when it's wet and damp outside does this occur, between 25 and 35 mph I step on the gas and it hesitates, feels like it misses and then takes off. I'm not flooring it. The car temp is cold and after I drive it for about 30 minutes she's fine. I just had the distributer cap, rotar and plugs replaced. 1990 420 SEL any suggestions guys? Thanks again for all your help. Siduri