I have a 1996 legacy which started out with the same problems 8 years ago. We had it to 2 subaru repair shops who scanned it, did repairs and said they fixed it. Within 2 weeks each time, the problem was back. My brother told me to change the mass air flow sensor. When I kept taking it to garage after garage and asking them if that could be the problem, they laughed and said no, they didn't think so. Since 2000, we have had it to 12 different garages and spent over $8000 trying to figure out the problem which just got worse and worse. It got to the point that it was shutting off while driving when I would slow down. Fed up, I removed the mass air flow sensor and soaked it in fuel injector cleaner over night (like my brother told me to 8 years ago) then cleaned it with a toothbrush. I also cleaned the place the sensor is inserted into. After letting it dry really well, I reconnected it and drove it. There was a marked improvement so I bought a new sensor and the problem disappeared.
Tuesday, July 1st, 2008 AT 12:54 PM