Hey guys. Since the cold weather has set in I have noticed that my check engine light will come on for about 20-30 seconds once I have been driving for a while. Today it came on for a longer period of time and I started to get worried. I know my tranny has a small leak and I haven't topped it up with fluid in a while and the car is also a few kms overdue for an oil change. Could either of these be what is setting it off? What else could it be, and what would you suggest I do? Keep in mind cash is pretty tight right now. Thanks everyone.
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Neither of those (low trans fluid or overdue for an oil change) will set the CEL. Something else is wrong. If this is a late model E30 with a Motronic 1.3 DME you can use the "stomp test" to read out the fault code(s). Otherwise you'll have to have the car scanned to find out why the CEL is coming on.The car makes it possible, but the driver makes it happen.
Jim Levie, Huntsville, AL
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you get one long blink followed by 4 numbers so it will be like:
bliiiiiiink - blink - blink blink - blink blink - blink - bliiiiiiink
Which would be 1221, aka bad o2 sensor
You need to have 173 DME though and the fault codes can be found here. To do the stomp test just put the key in the on position and stomp on the gas pedal 4 times very quickly.-Alex
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