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Thread: Strange codes?
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Old 12-23-2012, 06:10 PM
E39 touring E39 touring is offline
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Location: New Zealand
Join Date: Dec 2011
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Mein Auto: BMW e39
Originally Posted by edjack View Post
I never thought of that. So, the system must run open-loop all the time, using fuel maps that only correspond to to engine temperature and load, just like The Olden Days, before lambda fuel control.

The DME does not look for O2 sensor inputs.
Ed you are correct ,a system doesn't need o2 sensors to work,yes the (good IMO) olden days they were less complicated ,have worked on mid model mk2 VW Golfs and my information tells me the UK build cars had no 02 sensor yet many ROW cars did ,for example all Japanese spec cars had them regardless of fuel injection systems.

Steve 530 ,thanks for your input as mentioned the system is all original besides the cat delete pipe,when the cat delete pipe was fitted I carried out a full inspection under the car and there were no sensors infact there no cat overtemp prode as I have seen on parts diagrams for this model.
The PO was a technical manager for the biggest dealership in my country and my car was used extensively for technician training I tend to be sure it is original in that aspect.
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