Hey guys, returning user. Just recently picked up a 1994 ranger with the 2.3 and 5 speed. Super base model, no ac or ps. Been trying to chase down an issue; when at cruising speed, sometimes the truck stumbles a good bit and struggles to maintain speed. The problem is intermittent, and I haven't seen any correlative factors to MAKE it happen. Thought it was the mass airflow sensor, that isn't it. Here's what's been done; cat was clogged, it's gone. New plugs, New wires, New front coil. Fuel pressure tested out at a healthy 42psi. Only has 207k miles, appears previous owner maintained the engine decently. Any help would be appreciated