it happened again this morning. turned it off, started it again and it was runnin fine? when it was running badly it smelled like it was running way rich. the CEL is on, but has been since i bought it. never had any problems so i never thought to get it looked at. in my expierence they have rarely meant anything. i will try to take it to get read today. how much does a code reader usually run? i may just buy one. is there a certain format it needs to be in? i dont know anything about computers

cone filter, boche platinum 4 plugs, 235/75/15 kumho all terrains jeep tj rear springs and rav 4 rear shocks, rocksport gear 4" front springs, warn manual hubs, 2.25 inch exhaust, no cat, 48" thrush glasspack