Check engine light

[AdamF 88iS]

The non-gas pedal cars will flash a one digit code, 1 thru 4.

Gas pedal cars will flash a four digit code. so ^-^^^^-^^^^-^^^^ ( ^ is a flash, - is a short pause) is 1444. It will flash the 4 digits then wait a while and repeat them again.

[dnguyene30]

my car is a 87 so i have motronic 1.1
then i've had the engine light on. it flash 1 then 2 then a long wait....
i guess it was O2 sensor, replace that but the light still there and i got the same flash pattern.
any help?

[Adrian_Visser]

Way to dig up an ancient thread, you searched though so props to you.

this link show a list of fault codes:

http://e30world.com/fuel/BMW-E30-DME-Motronic-fault-codes

a lambda code (o2 sensor) can also be caused by intake leaks afaik.

[E30Eric]

old school! Francis has come a long way since this thread now that he sponsors the whole Pro-3 and preps race cars. Props to dnguyene30 for searching, you my friend are a good man!

[dnguyene30]

agree!
i have a small leak on one of the ankle boot that i put some kind of gel glue on it. Guess i have to replace that plastic boot.
Will buy a can of carb cleaner and search for some more vacuum leaks.
thanks

[twright]

My 1987 325is did the same thing: Check Engine light on at idle with a code set for O2 sensor.

It was not the O2 sensor.

It was the orings on the vent tube between the intake manifold and the block: they leaked, creating a vacuum leak.

I changed the orings and all is good.