Hi, i have an 09 Subaru forrester 107k that has been a nightmare car. It's been in and out of the shops for 7 months. money dropped but no fix. started with an engine knock after I bought it. Okay, no worries. I bought a motor from a company in Pennsylvania and had it shipped to Texas. I guess I picked the wrong shade tree mechanic who started the job but couldn't finish or even come close. he still wanted money though... I then took it to a mechanic shop with the engine next to it. they put it in and got it running but with codes. p2097. we replaced the 02 sensor pre cat with a new dealer sensor. than replaced the MAF sensor twice. twice I was told it was done and given a bill and time to pick up. each time I asked if it was fixed and if the monitors were set. "No, thats not our job," was the response i got. Both times i had to drive it 80 miles and check engine light popped back on. took it to another mechanic and after 2 weeks was told that the exhaust manifold was installed with a bolt instead of a stud and it punctured the head as oil leaks out of the bolt hole when the bolt is removed from the exhaust manifold but we don't do this type of work- gl. I took it to someone to do this work and after 2 weeks was told to replace the 02 sensor post cat. next move is to replace the head which I have not done as this thread say post cat 02 sensor wont cause this variation more than 3%... starting to get really expensive and I need my truck to work not to let wife go to the grocery store
