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Just got my Comanche (1988, 4.0L inline 6 cylinder, 2wd) a couple months ago, and have been working through the various quirks. It drives has been driving well, but two days ago I had to get towed home. After driving for about 20 minutes, it died at a stop light. Turning the key would crank the engine, but no fire. I tapped on the fuel filter, poked about in the engine, and tried to start it for a while, but didn't want to run the battery down. When my tow got there and pulled me into a parking lot, it started, but it died again after a few blocks and had to be towed the rest of the way home. Looking around the forum here, I see it could be an O2 sensor, the ERG valve, or the IAC. I pulled the IAC and cleaned that with some Carb cleaner. I killed it by pulling on the ERG, but it started right back up again. I let it idle until it died (about 20 minutes?) and it won't start now. I will be checking the reading on the O2 sensor once I can get it running for a bit again. I have only a little experience working on cars (thanks for the pinned Acronym list!), so any advice you can give me would be great. Thanks in advance.