My problem sounds related. Drove car for a while, acceleration started to become sputtery and jerky (random bucking), went through a toll plaza, attempted to increase speed out of tolls and the accelleration would cut in and out, like a light switch being turned on and off.....worked my way in the left lane up to a bridge (slightly inclined), and accellerator went unresposive, no luck in regaining control of engine power to pull the car...it came to a stop in the middle of the left lane on a bridge in Jersey and shut off.
plugs were replaced the day prior. There were some misfires...coil packs were switched by accident for some reason, so they were switched back and car seemed to run fine. 1 coil pack is weak.
Oddly, the car would start up while being takin on and off the flat bed trailor. My mechanic has driven it short distances all day, with the problem never reoccuring.
I'm concerned it will happen again, and it obviously happened for a reason before. Any thoughts or suggestions would be appreciated EMMENSLY. Thank you WRX community.