[bells0]

Mine seems to have gained a couple of mpg's since the software update.

I'm gettin 32mpg on the comp - all start stop A/B roads. Starting to get very relaxed with the right boot too

[yatesey]

Originally Posted by bells0

Mine seems to have gained a couple of mpg's since the software update.

I'm gettin 32mpg on the comp - all start stop A/B roads. Starting to get very relaxed with the right boot too

hi Bells0.....glad to hear it...sound like a bit of a result....mine's booked in for the update in 2 weeks.....(couldnt resist the resent dump of snow..so im off to the alps for a bit of drifting!!!....lol).....id luv the mpg to get better too...im in the mid 20's most of the time..unless its a longer journey...

cheers

Y

[Bumps]

Hery interesting thing I noticed last night (apart from that when I turn on the rear screen demister the radio cuts out - booked in to the dealers).

I was letting the car run and demist as where I park during the week was very cold last night after a lot of rain and misted up as soon as I got in and started up.

Anyway, I very gently revved the engine while idling. Just enough to take her up past 2K rpm. There was a definite wobble/clearing of throat felt through the seat at 1.5K and then again at just below 2K. There was no misfire stutter from the engine (sounded to be revving cleanly), there was just the 'vibration'. You have to rev relatively slowly, but interested to see if anyone else can replicate the same thing. If you rev quickly through 2K, the symptom doesn't appear. Now this is not always possible when driving, so the symptom may be replicated when driving ie pulling at low speed in second.

I think this vibration/shudder, if replicated when driving, would give the 'misfire' symptoms.

Give it a go fellow 320ers!!

[greatbm]

Originally Posted by Serjames

I'm getting about 20 in my 335i and as you know It's running a very ruch modified AF map AND I spank it...

Something must be wrong there lads.

Have you compared your actual mileage at the gas receipt end vs what the little computer says, they can be surprisingly different.

SJ

I've been monitoring my MPG over the last few months on fill up compared with the trip computer. Computer comes out 1 MPG low every time compared to fill to neck and range. By the way 325 vert and average 24 MPG mix of driving town and duel carriageway.

[yatesey]

Originally Posted by Bumps

Hery interesting thing I noticed last night (apart from that when I turn on the rear screen demister the radio cuts out - booked in to the dealers).

I was letting the car run and demist as where I park during the week was very cold last night after a lot of rain and misted up as soon as I got in and started up.

Anyway, I very gently revved the engine while idling. Just enough to take her up past 2K rpm. There was a definite wobble/clearing of throat felt through the seat at 1.5K and then again at just below 2K. There was no misfire stutter from the engine (sounded to be revving cleanly), there was just the 'vibration'. You have to rev relatively slowly, but interested to see if anyone else can replicate the same thing. If you rev quickly through 2K, the symptom doesn't appear. Now this is not always possible when driving, so the symptom may be replicated when driving ie pulling at low speed in second.

I think this vibration/shudder, if replicated when driving, would give the 'misfire' symptoms.

Give it a go fellow 320ers!!

will do at lunch...but my cough was always at 1500 at very little on the pedal...ill see...

Y

[AlanIOW]

Interestingly I just looked up my car's official mpg figures on the .gov website and my combined mpg was 42.2 [320i e03 auto] but there were two listings. upto aug 2007 [Mine] and from sept 2007 which was 40.9mpg combined. This sounds to me that the original figure quoted was optimistic and when the 2008 model was retested with "Efficient Dynamics" which should have been marginally better a revised lower figure was obtained!!!

[CrimsonRedE93]

I am getting knowwhere near that you are lucky (only 29mpg), i have heard though that a dodgy crankshaft sensor can screw up the economy and make it run rough mmmmmmm.

Slightly off topic (and bought on by bumps), has anyone noticed the top few line of the rear heated window not working I thought it may be used for an aerial or something

[greatbm]

Originally Posted by CrimsonRedE93

I am getting knowwhere near that you are lucky (only 29mpg), i have heard though that a dodgy crankshaft sensor can screw up the economy and make it run rough mmmmmmm.

Slightly off topic (and bought on by bumps), has anyone noticed the top few line of the rear heated window not working I thought it may be used for an aerial or something

Cab def has top two at least used as radio aerial and takes quite a while to clear.

[E92Fan]

Originally Posted by CrimsonRedE93

I am getting knowwhere near that you are lucky (only 29mpg), i have heard though that a dodgy crankshaft sensor can screw up the economy and make it run rough mmmmmmm.

Slightly off topic (and bought on by bumps), has anyone noticed the top few line of the rear heated window not working I thought it may be used for an aerial or something

Correct - the top two 'elements' are actually the aerial cables

[yatesey]

Originally Posted by E92Fan

Correct - the top two 'elements' are actually the aerial cables

ditto....but have to admit took mine in 1st week i had her...with this!...and yes...crawled out of the service area after the dealer told me!!!!...tell u the truth..the service guy that booked me in had no idea that was the reason either!!

..speaking of defrosting...well ish...anyone noticed the lefthand mirror defrosts before the right, slightly??...or is that a German / driving on the right thing?

..u know ud think we had more to worry about really!!!!..lol

[CrimsonRedE93]

Originally Posted by E92Fan

Correct - the top two 'elements' are actually the aerial cables

Thanks for clearing that one up Tony I wont be asking the dealer any silly questions then

[M3-FAST]

Originally Posted by CrimsonRedE93

Slightly off topic (and bought on by bumps), has anyone noticed the top few line of the rear heated window not working I thought it may be used for an aerial or something

Defo the case - I sent mine to the dealer for a 'faulty rear screen' when it was new for this reason lol. Although there only reason for it not being faulty was that the other car on their pitch did the same!!

It was only after a fellow forum member suggested that I discovered that it was the radio aerial. Strange that BMW can build some of the most advanced engines in the world, yet cant get a rear screen element to act as a radio antenna at the same time (even though thousands of other cars including other BMW models can!!)

It is most annoying on the vert as the only bit of clear screen you can obtain is the bit between the rear headrests! All other lines above the headrests are used for the antenna! Why couldn't the bottom lines be the antenna!!

[CrimsonRedE93]

Your quite right RedE93, I do find the rear headrests get in the way a little especially when you drive past soemone and try and follow then in the rear view mirror (if you know what I mean).

And yes I guess I should really

[yatesey]

Originally Posted by CrimsonRedE93

Your quite right RedE93, I do find the rear headrests get in the way a little especially when you drive past soemone and try and follow then in the rear view mirror (if you know what I mean).

And yes I guess I should really

yep...know wot u mean!!!........

listen fellow E93's....u noticed those rubber corner protectors (as you climb into the rear seats) working a bit loose?...theyre bound to sork loose everynow and then.....cant get mine back on completely...anyone similar?

[chrisbin]

Haven't been around these parts for a while....but...my E92 320iMSport (Auto) has just returned after software upgrade to fix the rough running/low power engine warning light...

First techy from Assistance thought it was the crankshaft sensor, second one diagnosed faulty Nitrogen Oxide sensor....

Symptoms were that every now and then the engine would lose revs at tick over to the extent that the whole car would shake, and then the revs would pick up again....This went on for a few months...then the light came on so I called out assistance...

Only had the car back last night and I'm not convinced yet....it seems to me that its jerkier but maybe the transmission needs to "learn" my driving again...
Its taken me a while to get all my convenience settings re-established...

Not sure about the fuel consumption either...previously, in mixed driving, I had an average of 31-32mpg....Currently the readout is showing 27.....I always thought the readout was a longterm average?? The manual seems to suggest otherwise....can anyone clarify??

Really should have had a look around here earlier before the car went in...

[Bumps]

Originally Posted by chrisbin

Haven't been around these parts for a while....but...my E92 320iMSport (Auto) has just returned after software upgrade to fix the rough running/low power engine warning light...

First techy from Assistance thought it was the crankshaft sensor, second one diagnosed faulty Nitrogen Oxide sensor....

Symptoms were that every now and then the engine would lose revs at tick over to the extent that the whole car would shake, and then the revs would pick up again....This went on for a few months...then the light came on so I called out assistance...

Only had the car back last night and I'm not convinced yet....it seems to me that its jerkier but maybe the transmission needs to "learn" my driving again...
Its taken me a while to get all my convenience settings re-established...

Not sure about the fuel consumption either...previously, in mixed driving, I had an average of 31-32mpg....Currently the readout is showing 27.....I always thought the readout was a longterm average?? The manual seems to suggest otherwise....can anyone clarify??

Really should have had a look around here earlier before the car went in...

Hi Chris.

The first techy I spoke to thought the same but the garage who did my software said that was all that was required. As you'll have seen from my earlier posts there's still something not quite perfect that I just can't put my finger on, however.

Ref the fuel consumption, did you zero the fuel cons bit in the trip computer? If you don't then it will look pretty bad as the garage often leave the cars idling for periods which wrecks the average figure. Will be worth a try if you haven't already.

[chrisbin]

Yep - will do a reset before I drive home tonight....so I take it from your reply that you also think its a cumulative figure, not just avg for the journey? I ask because reading the handbook the inference is the latter......
I know that the E90 I had previously gave a cumulative figure and I thought that this E92 was previously....just wondered if that had changed with the software....

[Bumps]

Originally Posted by chrisbin

Yep - will do a reset before I drive home tonight....so I take it from your reply that you also think its a cumulative figure, not just avg for the journey? I ask because reading the handbook the inference is the latter......
I know that the E90 I had previously gave a cumulative figure and I thought that this E92 was previously....just wondered if that had changed with the software....

AFAIK it's cumulative, as mine stays at the last figure where it was before switching off, and comes back at the same value. Mine's been hovering at 33.2mpg for a good few weeks, and only recently changed to 33.6mpg after a long slow(ish) 90 mile journey on the motorway. A quick trip into town won't affect it and make it dip, which it would if it were only the average over the one journey I suppose.

[chrisbin]

Originally Posted by Bumps

AFAIK it's cumulative, as mine stays at the last figure where it was before switching off, and comes back at the same value. Mine's been hovering at 33.2mpg for a good few weeks, and only recently changed to 33.6mpg after a long slow(ish) 90 mile journey on the motorway. A quick trip into town won't affect it and make it dip, which it would if it were only the average over the one journey I suppose.

OK - reset before journey home last night. Reading after 20 mls was 34 mpg....

Started up this morning and sure enough readout was 34 on start up so as we suspected it is cumulative/long term.....if you read the manual I'm sure it states that it is calculated from the last "start-up"....which is waht made me doubt it!!

So....possibly...the consumption has improved slightly.....certainly no worse which is good...only bad thing is I'm sure it did one of its hesitations this morning.........will be watching it closely....

Have to say that its great to be back in it after 4 days in a 120d......

[Bumps]

Originally Posted by chrisbin

.....if you read the manual I'm sure it states that it is calculated from the last "start-up"....which is waht made me doubt it!!

Read the what?

[chrisbin]

Originally Posted by Bumps

Read the what?

.....yeah exactly ....but I had to do that to find my way back thro' the comfort settings!!

btw...I'm sure its done the "shake" a couple of times today.....

[Bumps]

Fuel consumption update.

My trip comp reckons I've been getting 33.6mpg (mainly Mway and A roads), but I just worked it out manually after filling up. Out of my last tank of Shell V Power I got 36.12 mpg - pretty good!!

Not trying to teach anyone to suck eggs but if anyone is bothered about it and wants to work it out, then we can all do it using the same method (below) for a truly representative data set.

I set my trip recorder to zero when I fill up. When I fill up again I note the mileage since last fill up, and divide the number of litres of fuel put into the car by 4.546 (the number of litres in a gallon according to a converter website) to convert the fuel put in into gallons. I then simply divide the distance on the trip recorder by the gallons.