Our Subaru used to have a problem where--only when we filled up from near empty--we'd run into problems where the car would violently kick and slow down. Often, giving it more gas would help but the other day the car basically lost power to the point it wasn't moving. We stopped for a second before going on and the problem was fixed. Has happened ~2 times in last two months. Occasionally will do the kicking part (but not the slowing down) on the highway in cruise.
Went to mechanic, computer read no problems. However, mechanic (who we trust and isn't looking for $$$) noticed the wires were original factory issue. Got the wires & spark plugs changed, along with an oil change. Car worked great, went to gas station. Filled up on gas, problem started happening again. Problem will not stop now to the point the car cannot be used. Mechanic also mentioned fuel filter probably needs changing (can't tell without removing it and labor would cost just as much as getting a new one...).
No lights are on or have been in last month. Check engine light was on about 1.5 months ago but turned off when we got to Autozone and car has no history of the light. Discovered at AZ we were low on oil, assumed that was the problem then as we weren't having any use issues.
Fast forward to today, car towed to mechanic as problem made it impossible to drive. Mechanic looked car over and drove with issue, check engine light on. Code said that all four cylinders were misfiring (while the car was moving). Obviously, impossible. Mechanic didn't think the fuel filter was at fault and so didn't change it.
Car worked fine 'magically'--even according to the mechanic. Told us to take it to the dealership and let them know what the issue is as they've never seen anything like it.
So please...help! WE're supposed to take a long trip this weekend but this is obviously causing a few kinks.
2000 Subaru Forrester, no idea of engine size, 141K.