I am having a couple of idle issues with a 328i, replaced the MAF with a donor car and the fault persists. I don't want to throw parts at it willy nilly but have a feeling it is going to be an 02 sensor problem.
I have an OBD II scanner and the lead to connect to the e36 OBD under the bonnet but it will not read.
Through various forum threads I have found and read interesting information regarding unlocking the OBC to have faults displayed but i can't really find anything direct in telling me how to and what to look out for.
Can anyone help with this?