Hello fellow members! I just joined this forum, and I wish I could say it was just for fun, but actually I'm stuck at Yellowstone National Park with a sick 1990 240 and a mad girlfriend. I just bought this car from a doctor in Portland, OR who took great care of it. It's a manual transmission and I have service records going back to new. I had this crazy idea of driving it back home to Cleveland, OH this week with my girlfriend. Everything was going well until now. I felt comfortable driving it back because the doctor had just had it fully gone over by his shop and given a clean bill of health after about $1500 in service. It ran/drove absolutely perfectly. So, on to relevant details. Yesterday, after about 300 miles of driving, the check engine light came on. I'm a fairly tolerant old-car driver, and since it didn't change how it ran, I wasn't worried. What I did eventually notice, however was very bad fuel economy- about 15-16 mpg. I figured I might foul out some plugs and burn a bunch of gas, but still probably get home. The exhaust smelled rich and it would stumble a bit at idle, but hey, keep going, right??? So we decided to visit Yellowstone on our way. We got to a desolate place about 20 miles from nowhere, when the car became very weak on power and stumbled and finally stalled out and wouldn't restart. I should mention that at this time the fuel was getting rather low, slightly into the red. The car was dead at the side of the road and wouldn't restart for any length of time longer than a few seconds (and ran terribly). We did have cell signal so I started calling places for a tow, the closest of which was 30+ miles away. The car sat for a half hour or so while other motorists passed us with a "good luck, dumbass" sneer. After a half hour of sitting, it restarted! It wasn't running perfectly but I was able to nurse it 20 miles of beautiful scenic desolate roads to West Yellowstone. At this point I was suspecting an overheated fuel pump (outside temps were 80+) which in some cars can be exacerbated by low fuel levels. I filled it up with gas here in West Yellowstone and it runs "ok" but not overly well. I read the codes on the LED under the hood and there were three codes. I don't remember them exactly but they all had to do with "Lambda running too rich/lean". Duh, it's running too rich. There are no mechanics or auto parts stores open in this town until Monday so I don't have a lot of options. I *suspect* this has all been caused by a bad O2 sensor sending too much fuel. What I didn't expect was the car completely dying at the side of the road. Are these unrelated conditions or was the fuel pump working hard at high temps with no spare fuel in the tank to cool it and overheated? Can I keep the fuel level above half and get home 1800 miles? Should I try changing the plugs on Monday thinking they are probably getting fouled? I doubt fouled plugs left me at the side of the road only to restart after 30 minutes. Do I have to wait to Monday to get someone to change my O2 sensor? What should I do???? Thanks for any and all advice. John 440-339-4341