My M30 uses 20.5L/100km (11.5 miles a gallon)

[joshua43214]

Check in the following order for poor fuel economy,

Air filter
Ignition parts
O2 sensor
AFM

The fuel filter should never cause high fuel consumption, since it will lower fuel delivery when it clogs up.

Make sure you have no vacuum leaks.

The O2 sensor is a very common cause of excessive fuel usage.

[BigKriss]

What is a wideband 02 sensor? And what are you doing posting during your meet? You are supposed to be buzy drinking beer, eating barbeque, and swapping stories.

I'll reply about the wbo2 when I can speak one with one word tied behind my foot in front of my mouth... but atm we've drunk a shitload o beer and chewed down a truckload of kangaroo steaks... the possums came and took away the rest and the bush turkeys are roosting in the trees now trying to **** on our cars... and there are 4 computers in the house but we're hardly in a fit state to use them... plus this fukem5 guy is pissin us off real bad... Kristian

[Traian]

This thread is making me feel better about my consumption hehe. According to the OBC I get 14.0 L/100k which is like over 50/50 hwy/city; according to my own measurements it´s probably a little less, maybe 13.8 or so overall. I thought that was pretty bad, because BMW lists the new E60 550i´s consumption around 13.0 or so and it´s got another 800cc. And on top of that I tend to drive pretty relaxed most of the time.

Did you check fuel lines? Maybe you have a leak. That might explain why the car runs good otherwise.

[fukem5]

Check in the following order for poor fuel economy,

Air filter
Ignition parts
O2 sensor
AFM

The fuel filter should never cause high fuel consumption, since it will lower fuel delivery when it clogs up.

Make sure you have no vacuum leaks.

The O2 sensor is a very common cause of excessive fuel usage.

One thing about this forum in particular, u really mustn't listen to too many of the contributirs, the first thing to check is the valves cos they let the fuel mixture into the cylinders & on an M30 they are too damn big: Jezt change em out for small ones next time u chg your plugs, but I tell u what I'll raise the matter w my cousins at BMW shortly and ask them to help.

In the meanwhile I've heard you can run freon in the EFI (works in a BMW like Nitrous works in a Rotary) and even remove the AC like Jon K, but he is not as smart as he thinks he is... He and Regal632's Tin soldiers will probably tell you this will fix everything but I doubt it, which is why I'll talk to my cousins ok bro? NO worries bro, its kool too I'll accept payment when u save ur hard earned petrol money from pimpin' drugs and ****...

[mattyb]

mate your full of it. you wouldnt know a slimy maggot from a local person in your village. I doubt u have ever seen a car let alone driven one. shut the fk up if dont have a clue what ur talkin about!!!!

[fukem5]

mate your full of it. you wouldnt know a slimy maggot from a local person in your village. I doubt u have ever seen a car let alone driven one. shut the fk up if dont have a clue what ur talkin about!!!!

I don't see anyone rollig out a red carpet into Bavaria for you ratty****; it takes a lot of service station experince (ie more than pumping gas) to be acknowledged by a major manufacturer as having inoovation skills that would be helpful in developing the next 1200rwhp quad turbo, 3-cylinder hybrid M5.

My cousins are laughing at your best efforts w ur 540 bro, maybe u should resign from the board in shame now rather than abuse fully verified by paypal Prima Donas like me that have spent so long contributing to the Bimmer community.

[mattyb]

i dont care what u think. just wait till jeff gets to stick it up u!!!

[Dave M]

I don't see anyone rollig out a red carpet into Bavaria for you ratty****; it takes a lot of service station experince (ie more than pumping gas) to be acknowledged by a major manufacturer as having inoovation skills that would be helpful in developing the next 1200rwhp quad turbo, 3-cylinder hybrid M5.

My cousins are laughing at your best efforts w ur 540 bro, maybe u should resign from the board in shame now rather than abuse fully verified by paypal Prima Donas like me that have spent so long contributing to the Bimmer community.

Finally, someone who knows what there talkin abouts.

My cousins are always laughing and $hit at stupid people and I like to do it too cuz it makes me feel reaalyy good inside. Thats funny, we have so much in common.

You're right about Jeff and Regal, they couldn't design a good turbo hybrid like guys like us. Mostly, they just blow hot air (light jons silly little contraptions). Geez, I hope they don't read this.

Keepin it real,

Dave M

[Gayle]

Finally, someone who knows what there talkin abouts.

My cousins are always laughing and $hit at stupid people and I like to do it too cuz it makes me feel reaalyy good inside. Thats funny, we have so much in common.

You're right about Jeff and Regal, they couldn't design a good turbo hybrid like guys like us. Mostly, they just blow hot air (light jons silly little contraptions). Geez, I hope they don't read this.

Keepin it real,

Dave M

Dave

This post doesn't sound like you. Is it tongue and cheek? Or leave your computer unguarded and is someone else posting under your name?

[Adnan]

BTW does this engine had 2x sensors, one before the C-Converter and one after? or is it just the simple procedure of replacing this

Oxygen Sensor
C5010-33552
In Stock Bosch (OEM) $189.00 $113.13

Thanks again.

The M30 has just one O2 sensor. It can be a bear to remove, however.

My '91 M30 gives me 20 mpg with a 50/50 mix of highway and city. Have you considered that you may be driving the ol' E34 as fast as an F4 ? On mine, the fuel consumption goes up significantly at 70 MPH versus 50 MPH.

Regards,
Adnan