Define chugging problem. My 1996 (4 cyl) just started acting up at various speeds and it does seem to be triggered by throttle activity. I am not sure I would call mine chugging, as much as all out cutting out for a second, as if the entire engine stopped for an instant. No loose of electrical power to the rest of the car. Sometimes it just cuts out once and then rides fine for a period of time, other times it happens a 1/2 dozen times over a period of a minute. Garage seems to think electrical, but they have been at it all day and have not been able to put their finger on it. Any thoughts? Please respond if you have and fixes.