i bought my grand am in november with 90,000 miles on it. a couple> months ago it stalled on me while driving 60 mph and i ended up having> to get a new key, tumbler, ignition, and everything re-coded which> cost me too much.> now, in the last week my "service engine soon" yellow light came up> while i was driving and it has not turned off since. it turned on> when i was at 94,950 and i have driven it 50 miles since. iВ’m worried> about taking it in cuz iВ’m a poor college kid and canВ’t afford another> costly car repair. the car sounds fine, doesnВ’t run any different,> and i donВ’t smell anything different either. i have had no problems> since the light came on. i heard that the light might just come on> when it hits a certain mileage. any thoughts or ideas?