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3-Series (E21, E30) Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.

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Old 03-22-2009, 03:12 PM   #1 (permalink)
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BMW 318I 1984 Oxygen Sensor

Hello Guys,

I have a question that I know for some might be a stupid one yet I feel I have to ask it before jumping into conclusions.

As you can see I have a 318I 84' E30 European version. This is the most simply of this model with no extras at all.

I bought it only a year ago and I noticed that it doesn't show any Oxygen Sensor on the exhaust. It is just not there.

Is it missing becuase an old owner decided to disconnect it? or are there cars of these model without an oxygen sensor(I know it does not make sense but I have to ask).

If is missing; there is no cable hanging anywhere; where is the Oxygen Sensor supposed to be plugged(In the ECU).


Regards,

WilbertS
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Old 03-22-2009, 04:32 PM   #2 (permalink)
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OK, nobody seems to knwo where is plugged on the ECU. That's cool I can find that out. A much more simple one then. Does it has or doesn't it has a oxygen sensor?

Regards,
Wil
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Old 03-22-2009, 08:57 PM   #3 (permalink)
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does the car run at all? cause if it has a missing O2 sensor or even one that didn't work at all the car would not be good, and you would know it right now....
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Old 03-23-2009, 10:13 AM   #4 (permalink)
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Thanks for your answer. That's funny, because the car run fine. Only when I check the exaust from the begining to end I can't find the sensor.

WilbertS
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Old 03-23-2009, 10:15 AM   #5 (permalink)
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Oh also, I have a haynes manual and they say that the ECU is programmed to establish a set mixture in order to continue working when the oxygen sensor is not active/not there. So.... I guess the car should run even without the sensor; the computer simply loose that feedback and clearly becomes less efficient but that's it.

WilbertS
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