Anybody know anything about catalytic converters? My Ford Ranger pickup sputtered a couple of times coming up the hill on the way back from Altavista today, then ran ok the rest of the way home. Jo went to start it a while ago and it started but was missing badly and would barely run. I started it and it would run when you gave it some gas but it cut off as soon as you let off it. I took the big hose off the intake and sprayed both sides of the throttle thingamabob with carburetor cleaner and drove it down the road, but it was still missing and running rough. I don't know what else to check, i'm thinking oxygen sensor?..catalytic converter? Can't tell anything anymore without plugging a computer into it. The check engine light is not on like it would be in a Peterbilt- maybe the bulb is burned out, I don't know. Anybody have any suggestions? If not, I guess i'll have to call a rollback to take it to a garage Monday morning. I can't even get to work tomorrow, might have to wait until Monday...should have bought that F-150 from my brother for $2500.