I have a '95 Escort with 176,000. At about 130,000 it had a hiccup. Would idle
fine and would go up to 35 or 40 fine also. When asked to climb a hill or get
on the highway, it would buck and hiccup. Turned out to be the ignition coil.
My '95 has a distributorless ignition, as I think yours does. The coil is right
on top and easy to get to. It's actually two coils packaged together. It was
about $43 at Advance Auto. It would be a good idea to change plugs and wires