Hi,
I have a very similar problem. I have a 1991 Escort, automatic, 1.9 L. The engine shudders or hops whenever I'm accelerating between 30 mph and 40 mph. The problem seems to be more noticeable when the engine is cold. I recently replaced the timing belt, alternator, battery, and spark plugs. Has anyone had any success with this problem? I've seen a couple of references to this problem on the Internet but no definite solutions.
For example, there's a suggestion here to look at the valve body and/or TCC solenoid:
Ford Escort Car Repair Questions and Answers
Does this seem right? Any ideas?
Thanks