[Blue)(Fusion]

I had a similar experience like this. The problem with mine was a bad Coil-over-Plug causing a spark plug not to fire. Although the 94's don't have COPs, a bad plug or plug wire may still be your problem.

When was the last time you replaced spark plugs? If it's been a while, I'd consider replacing them. Not hard to do and they're around $2/each.

If that doesn't fix the problem, new plug wires might be a good idea too. These are more expensive but if these have never been changed in the life of the car, it may be time for new ones. They do lose their ability to conduct current over time, making the spark less powerful over time than when the wires were new.

I'd check both of those out first since those are relatively easy fixes.