Presentation and first Question ( O2 Sensor ) - The Unofficial BMW M5 Messageboard (m5board.com)

overflowpy · 1st July 2008, 18:42

Hi,

I have e34 M5, black with black leather
93.000 Km on it.

The car no have a O2 Sensor, I search entire in the
exaust system but not luck

The last 7 digits VIN BK03825

Is posible the car came without a O2 sensor?

Is a euro car. Not USA version

Sorry for my english ..

overflowpy · 1st July 2008, 18:51

sorry.. my name is Ricardo I'm from Paraguay - South America.

Some pics...

overflowpy · 1st July 2008, 19:02

more pics...

Mpowersurge · 1st July 2008, 19:23

i dont know where to start...

mottati · 1st July 2008, 19:28

yes it is possible that your car has no O2 sensor.

There is another board member with a car in south africa who has pointed out that his car does not have an 02 sensor as well.

gwm635 · 2nd July 2008, 05:50

I stand to be corrected by those with more experience than I, but I find this hard to believe. IIRC my previous training in Bosch systems said that the motronic systems like those in our cars will not funtion correctly without an O2 sensor

Mmm-Five · 2nd July 2008, 10:13

Quote:

Originally Posted by gwm635

I stand to be corrected by those with more experience than I, but I find this hard to believe. IIRC my previous training in Bosch systems said that the motronic systems like those in our cars will not funtion correctly without an O2 sensor

If this is the same item as the lambda sensor that attaches to the exhaust system near the cats, then mine ran fine without one - not that I knew it didn't have one though. Only realised when I replaced the aftermarket system (basically a few cheap steel pipes with flexible stainless sections and no cats).

Konfused Pete · 2nd July 2008, 12:25

somewhat unrelated to the topic, but i noticed your gearknob is on backwards

overflowpy · 2nd July 2008, 16:39

Hi, I search a connector for the lambda sensor under the car, but not luck..

How can view if the car originally came with this sensor?

It is important for the fuel economy?

Thanks

nebpor · 3rd July 2008, 10:50

I think I have some pictures of where the sensor should be - I'll try and post them up over the weekend!

In theory your fuel consumption might suffer if the O2 sensor is broken, but if your car does not have one then it probably doesn't need one - the MAF on the air intake is controlling the fuelling.

Can you post what your fuel economy is so we can compare for you?
Good luck