Hola USMB-ers,
Last year my 1998 Outback got a nice new CCR 2.2L engine to replace the 2.5L with blown head gaskets (gasp! yes, it's true).
The fuel efficiency started out OK but has gone badly downhill over the last year. I'm getting about 15MPG in town and 20 on the highway. Not good.
Plus, I've had a gas-like smell on startup (like gas, but not gas from the pump, maybe gas mixed with something else) you can smell inside and outside the car for a few minutes after starting the engine.
AND the car has thrown the CEL with the 420 code quite a few times now. I don't remember for sure, but I think it may have been throwing that code BEFORE the engine replacement.
Help! Is my cat clogged? The car idles unevenly and feels like it wants to take off at stop lights (putting the car in neutral helps). And the performance is awful, as in, mash the pedal, and nothing happens. It's hard to get the car to downshift if you need speed in a pinch.
A local mechanic suggests doing both O2 sensors before doing the cat, but I don't want to waste time if the cat's clogged anyway (would bad sensors explain the smell?)
Any thoughts you guys have would be GREATLY appreciated. For reference, this is a AT, not a manual, with about 180K miles total (only 8K on the new engine).
Thanks,
Jeff