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ColdAccord
05-05-2007, 01:18 PM
My fuel gauge is kinda flaky. The range is too. are they both run off the sending unit in tank w/the pump? (i know the guage is im wondering about the range).

Also, my avg mpg is usually around 13mpg. that can't be right. could my possibly bad fuel level sending unit be a cause of this? what kind of gas mileage do others get? (I have a 735il)

lastly, is ther ea one touch function for the sunroof?

Seven
05-06-2007, 10:58 PM
Others on this forum can probably help you more. But I believe the range is just an "educated guess" based on the amount of fuel remaining and the average mpg stored in your OBC. So, it would make sense that if your fuel gauge is acting up, that your range calculation would be off as well. I would say that a faulty sender could cause the symptoms you are seeing. What year is your e32, and what type of driving do you do normally? According to fueleconomy.gov, 13mpg is to be expected for city driving on some e32s.

I don't know if all e32s were equiped with a one touch sunroof feature, but I know that at least some were. It should work with the normal sunroof button, just tap quickly backwards and let go to open, and tap forward to close.

I hope that helps!

ColdAccord
05-06-2007, 11:14 PM
yea i probably need a new sunroof switch. it worked once (how i discovered it had one touch) but not again.

i drive a 735il, and im pretty easy on it. i always keep it in economy mode and never get on it, ever. i just cruise and go slow. my 5 sp e30 is for hauling ass

Hound
05-07-2007, 05:29 PM
highway if I just go at about 110 to 115 I can easily see just shy of 770km on a tank, if I really try I could get ~800km.

the range to the best of my knowlege is taken from the gas that you have left, the consumption that you are at (what I do is when I get on the hwy I reset the cons. 1 and cons. 2 and watch the km go up as I drive along :D) city I use about 60L per week going to and from work, the gym and the odd outing after work.

It seems to me (with my extremely limited mechanical knowlege) that the sender might be buggered up.

MANDD
05-07-2007, 06:46 PM
The fuel range is estimated based on your driving style, it is calculated by using the load factor, road speed and remaing fuel.

Failure of the fuel sending units are very common, the wiper (potentiometer) on the sending unit will typically fail (carbon tracking) causing an erratic fuel reading.

The sunroof is one touch operation on the E32.

Mark.

V12
05-08-2007, 12:02 AM
On my 93 E32 740iL, the sunroof is a one touch open and close. My average is 16.5mpg or 14.2L/100km over the last winter with mixed driving.

V12
05-08-2007, 12:28 AM
On my 93 E32 740iL, the sunroof is a one touch open and close. My average is 16.5mpg or 14.2L/100km over the last winter with mixed driving.
Try to find out how many miles you driver per tank. drive till the yellow low light comes on, fill 5 gallons immediately, zero the trip counter and reset OBC CONS 1, wait till yellow light comes up again, then take the number of miles and divide by 5.
Compare to your OBC CONS 1. IF you pump is flaky then CONS1 is useless

Hound
05-08-2007, 09:16 AM
My driver's side window is one touch up and down, why is it that the others aren't? did they only have drivers side and sunroof in 88?

R2dmax
05-18-2007, 04:57 PM
My driver's side window is one touch up and down, why is it that the others aren't? did they only have drivers side and sunroof in 88?
Yes. Mine is driver only and sunroof too.

As for the fuel economy, mine gets about 17.2 avg mpg w/ mixed driving. I need a tune up, so I am sure I can do better.

Hound
05-20-2007, 10:52 AM
you know what I just noticed the other day, was that when the back drivers side window is near the top of the track, if I tap the button as if it were one touch, it will go up on it's own :confused: maybe they are all one touch but something is fugged up?