View Full Version : No Check Engine Light

06-23-2004, 03:59 PM
My 1988 735iL is due for its' wonderful California biennial smog check. The tailpipe measurements were amazingly low, but the car failed because the Check Engine light does not come on at start-up. Thinking it was simply a bad bulb, I changed the suspect bulb and still no Check Engine light at start-up.

Has anyone else experienced this? Any clues or advice will be greatly appreciated!