Have read all the posts on "bucking", and doesn't seem to apply to this intermittient devil that crops up once every few months.

For no damned good reason, the car just looses all power for a split second, the whole thing "bucks" like a bronco just ONCE, and then runs just fine for another few months, until it does it again. Seems to happen at low speed under throttle.

2001 Protege
Auto trans
2.0
loaded
120,000 miles
(Scrupulously maintained)

Bad gas? Sticking EGR? Electronic ignition module going bad? I hate these intermittient problems.

Thanks to the group in advance.