Bullwinkl

Thanks for the help! I'll get the codes pulled and clean the MAF. Let me clarify a bit: below 2000 rpm it almost feels as though it's not firing on all 4 cylinders, about 2k, everything's great. It's even worse (surprise), and difficult to drive sedately, with the AC running.

Thanks a bunch! I've replaced the O2 sensor, dist cap, rotor, plugs and wires and it runs SOOOO much better and the CEL hasn't come back on. There's still some hesitation under heavy throttle below 2000 rpm. Could that be timiing, or vacuum, or something else all together?

Hiyas all! I just picked up my first Subaru yesterday. I've quite a few cars, but had some questions about this one. It's 1993 Loyale wagon, with 4wd and 197k. The engine was replaced at 150k. I'm concerned that the engine seems to run rough, although from outside the car, it sounds super smooth. I understand that the flat four will run rougher than most inline 4's, and so I'm not really sure how to guage this. It stumbles under load at about 3000 rpm. I'm inclined to think that it needs new plugs/wires/distributor cap, etc. and will likely be doing that this afternoon. This morning, as I was driving it to work, the check engine light came on. I had been doing about 65mph for 10 minutes at that time. I'm wondering if it might be a bad catalytic converter. Is there an easy way to test this (without a code reader)? My second question about the car involves the 4wd system. I understand that with the manual gearbox comes a locking center differential, meaning that it's not OK to drive it in 4wd on pavement. Is that correct? Thanks a bunch in advance for any advice you might be able to offer. So far, I'm really enjoying the car.