Just bought a used 02 Legacy L 2.5/5spd.
Started idling rough, and check engine came on. Dumped codes, got a p0130 and a p0171. Cleared them, and then 2 days later, hot p0301-4 (misfires in all 4 cylinders.)
I'm going to see if there's any warranty left, but I suspect I'm on my own...
plugs and wires were apparently just done... because of the same thing.
the one thing my autotap did show was the long term fuel trim was -23% IIRC, which is why the p0171...
I don't yet have a shop manual, so I'm looking for some assistance on where to start - 02 sensor? Which one(s)? I haven't even looked under the car yet, so does the 2.5 have one 02 per bank or one for both banks?
The car runs fine once you're up to speed, but definitely idles like crap. Nothing obviously broken/unhooked under the hood, but I'll be having a more in depth look tomorrow.
One thing I read talked about exhaust leaks upstream from the 02 sensor
- this car has a new clutch, is it possible the mechanic who did the clutch messed something up?
Grrrr... car drives nice, but I'm busy right now, and I was hoping it would be a nice reliable winter car so I could finally put the wife's Beretta out to pasture.
(and if you're wondering why I bought it when it's got some mechanical history, it's because the body and interior are almost perfect - I can fix mechanical, but rust is evil and apparently every other Subaru owner has dogs. Big smelly dogs that eat parts of the interior. Plugs and 02 sensors are cheap compared to new dash pads without bite marks.) ;)
Ray