1992 Dodge Ram Van 1500 with 5.2 V8 Automatic - when I'm barely accelerating (foot light on the pedal) the van occasionally "bucks" or pulses/misfires once. No code lights. Not consistent... other than it does it once or twice every time I drive. Can't get it to repeat for a mechanic to experience as it is very random.
Ideas?

 

Could be a dead spot in the throttle position sensor (TPS).