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View Full Version : check engine light on when idling.. wierd


Chris de la Cruz
07-22-2006, 01:48 AM
today i noticed my check engine light turn on once in a while when i sat at red light. It would stay of for maybe 10 seconds at most then go away. I feel no difference when driving and the idle seems to be normal at 700? Its weird. I'm guessing a bad sensor or something? I haven't run a diagnostics yet for it b/c the light is only of for a couple seconds.

paul christians
07-22-2006, 09:27 AM
it is a miss read.How old is your o2???????

e30_kid89
07-22-2006, 09:51 AM
sounds like me when i had my o2 sensor problem. run the diagnostics and take it from there but it might be that.

T.Dot_E30
07-22-2006, 10:27 AM
do you have an m30 afm? or is yours sitll stock?

Mystikal
07-22-2006, 12:03 PM
http://www.unofficialbmw.com/repair_faqs/motronic.html

Motronic 1.3. Dumbass.

Chris de la Cruz
07-22-2006, 07:14 PM
trev, its still the stock afm

yo jay stfu and get out. no the thing is, it doesn't stay on... its like my damn brake lining light and goes on and then goes away.

e30_kid89
07-22-2006, 07:27 PM
so is it like you stop and ur just sittin there the light comes on? and then wen u rev and drive off it comes off?

Chris de la Cruz
07-22-2006, 07:51 PM
yeah thats exactly what it is.

e30_kid89
07-22-2006, 07:54 PM
i had the stupid same gay problem.....it was my o2 sensor so check yours out....if u wanna make a cheap ghetto one that rly works i can tell u how too. stealer quoted my 200+tax for a new o2 sensor but i outsmarted them and ended up only spendin 41 bux:)

King Luis
07-22-2006, 08:48 PM
check your o2 and icv and if you got any air leaks. also make sure your injectors are still good. (get the cel code. i bet its 1222) mine did that a while back.

e30_kid89
07-22-2006, 08:59 PM
check your o2 and icv and if you got any air leaks. also make sure your injectors are still good. (get the cel code. i bet its 1222) mine did that a while back.
ugh how i hated that code....also if u have air leak/o2 problem look for the code 1221

ZiMMie
07-22-2006, 10:50 PM
if u gettin an O2 sensor, get an e34 535i one. is the exact same thing it jst a have longer wire. and its only $50 plus taxes compared to $100+ for our cars.