Pleas help, I have a 96 Outback wagon with a 4cyl 2.5L engine @ 117,000 miles. Several months ago the engine was running ruff and the check engine light came on. Had it scoped and had a cylinder 3 & 4 mis fire code. I tuned it up with all new NGK plugs, factory set of wires, air filter, fuel filter, and a oil change (which I have done every 3,000 mi since I bought it at 90,000mi). It ran much better but 5% of the time when excellerating on the freeway (usually around 55mph at 2,700rpm) the check engine light blinks on as the acceleration losses power. It remains in a low power state until I deccelerate to around 45mph (or 30secs). The check engine light then stays on and the engine returns to normal power/operation. Have since done a coil pack and alternator. Same problem but last scope only coded a cylindar 4 mis fire. Thanks for any ideas you may have!