1991 325i - Motronic 1.0 or 1.3?

[Nightshift]

Doing some maintenance on my 1991, 325i - figured at 90k it was time to replace the O2 sensor.

However, having jacked the care up, no O2 sensor in sight. I know the Motronic 1.0 didn't use the lambada sensor, but I thought all post-1988 cars used the 1.3 system?

Anyone able to shed any light on this?

Cheers.

[Alex]

only cat equipped cars had a lambada sensor i believe

[Brianmoooore]

All six cylinder E30s and all but the last of the four pots will run happily with or without a lambda sensor.