I have searched a bit and asked a few buddies of mine about this but still had no answers so I figured I would ask as a noob ... sooo I have had my 98 taco for aorund 7 months now and its got around 150k now. Around 4 months ago I got a full tune up and all new brakes from a buddy, I changed to castrol syntec and got some new bfgs..all minor stuff. I havent had any problems with it, but the engine light comes on maybe once a week and then decides to go off after the end of the day, this has happen maybe 10 to 15 times. 2 times I have brought it to autozone to have them check it but BOTH times when I get there the light decides to go off..just my luck. I am just not sure what it could be...thought it had to do with the weather being cold but the other day it hit around 60 degress and it went on again.. just wondering if anybody could give some input..thanks!