Is this possible?

[GPGrobler]

Thanks to all,

Chris no problem, I will have the car checked and the codes read, just now at present I have to drive the car as is because I do not have any other reliable or semi-reliable transport, and I have been working every day since the accident with my E30.

Moranor thanks for the advice? It also won't help to start changing sensors if there is a vacuum leak, or will a vacuum leak also show up in the fault codes?

Please forgive my ignorance, as I said, I only have the car now for a little bit longer than a week, so I'm willing to learn the DIY for it, and get it to perform as a BMW should.

 

[moranor@axis]

vacuum leak will probably show up as a combination of fault codes... I would check for leaks as well as clean the Maf before reading codes as the codes will be a mess if a Vacuum leak is causing this

use electrical contact spray or proper Maf spray to clean

codes will be useful for identifying a faulty sensor once you have eliminated Vacuum leaks as the problem

 

[GPGrobler]

I guess the vacuum leaks might be audible like on the E30, especially if the engine is still cold? What are the most likely places to check? I will also do the "Chewbacca test" to eliminate that, but that noise is present on acceleration and it does not make that noise.

 

[ChrisBrand]

Cool bud. Maybe remove the Airbox, then the MAF sensor and clean it with spray, then undo the upper intake hose (Check for cracks and holes), then undo the lower intake boot (check for cracks and holes). The intake boots are prone to cracks and holes as they age. You will also hear a whistling sound when flooring the car.

Love this guys vids:

[video=youtube]

 

[moranor@axis]

Chewbacca test will tell you if there is a massive leak... but on my e46 one of the CCV lines had a crack that opened up only under some conditions...

rubbers are probably all old and cracking its well worth getting in there and replacing what needs be

 

[GPGrobler]

Thanks, I'll start there, also how prone are the sensors to failing? On the E30's the things are bullet proof IMHO

 

[Putrid4444]

When I had my e46 320i it also climbed up to the 20l/100km mark, but that was after I reset it randomly to generate a new reading. It fluctuated quite heavily and even at low revs. After a while of driving like a ouma it went down to 11l/100km. But your problem seems abit worse.
Just out of interest, where did you buy the car, I sold my 320 about a month ago. :fencelook:

 

[GPGrobler]

I bought it in Hazyview, I think the car was brought from Nelspruit or around there by the dealer. If you can give me the registration or VIN I can tell you if it is yours :=):