02 Forester bucking, hesitation, sputtering, etc
I am new to the site, this is my first post. I have done a search for hesitation and read many of the posts. My problem is similar to those but also a bit different, so I am hoping someone can help.
My 02 forester has 107,000 miles on it. Started hesitation/sputtering/bucking at 60mph. So I took it to garage, replaces plugs and wires, did same thing, replaced fuel filter, problem fixed. At least for a week. then it starts again. Replace fuel filter gain, good for less than a week, I am now on my third fuel filter. Funny thing is that now it only does it a certain times not all the time. Usually when it happens is when the car is first running, aka cold, drive it for a bit and the engine gets up to temp and most times it goes away. Could that still be a fuel filter? The garage still thinks its a fuel issue, wanting to then drop the tank and clean it out or replace. Sounds like that could cost me some $$$. Are there other things that I should be checking before going that route? I see some have solved similar problems with throttle position sensor or O2 sensor changes.