Stumbling/hesitation problem on '95 Escort
Hello. I have a '95 Escort LX, 5-speed,1.9L. Recently I have been having an issue with the car stumbling, or missing under certain conditions. It seems that if I start out in 1st, I can floor it, redline every gear, and it drives fine. However, if I am under very low throttle conditions (highway cruising, etc..) the car will shake and stumble. Also, if I am at a low rpm in a higher gear and try to accelerate, it will do the same thing. If I downshift, it seems to be fine. It actually feels like the engine is cutting out for a split second when it happens, it can get quite violent. The car has ~80k miles on it, never given me any problems. Just for a little background, the car has always been well-maintained, has new battery, recently changed fuel filter, in-tank fuel strainer, new spark plugs/wires, new O2 sensor. Engine grounds cleaned/replaced. I have had this problem before any of that was done. Could anyone please give me an idea of what the problem may be? Thanks alot..