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1

I will preface this by saying I do not have a lock on BMW's, especially older ones, so take this for what it's worth. If this were an American car with mid 90's fuel injection, I'd say your Mass Air Flow (MAF) sensor was bad. Since it's a BMW and it appears they didn't use a MAF, I'd point to the air flow meter. Here is my thinking. I'm going to make an ...


1

You need to have your vehicle scanned for any basic faults. If the problem is intermittant as described, then use a data logger such as Launch CRecorder or iOBD2, to track the vehicle operation and show up any intermmittant fault. A lot of scanners will also record the engine operation to enable you to scutinise the record for faults.


0

I am pretty sure this is a wire problem. Open the door and check the cable between door and middle pillar. If everything is fine, check the door lock engine. For example replace it between the right and the left door. If the engine is also fine, I would just bridge the wires with some other door.


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Thanks for the replies, turned out I needed a new lambda sensor!


3

The general "rule of thumb" for horsepower ratings between crank HP (CHP) and rear-wheel HP (RWHP) is ~18-20%. An automatic transmission will be closer to 20%, while a manual transmission around 18%. As you stated, and for the same reasons, these are just a general guideline. If you have the CHP number available, multiply that number by .8. (ie: 450hp x 0.8 ...



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