I have a 93 escort wagon lx, with a 1.9L, and a 5-speed. When you get out on the highway around 60-68 mph, it starts shuddering, and sputtering acting like its missing a cylinder, below or above these speeds its fine. I just put plugs in it last year, put wires on it this year, and it just started this a couple weeks ago. The check engine light comes on during it, and then at random times..is there any way to pull the obd1 codes from it? nobody around here seems to know, or have an obd1 tester..