E46 BMW Social Directory E46 FAQ 3-Series Discussion Forums BMW Photo Gallery BMW 3-Series Technical Information E46 Fanatics - The Ultimate BMW Resource BMW Vendors General E46 Forum The Tire Rack's Tire Wheel Forum Forced Induction Forum The Off-Topic The E46 BMW Showroom For Sale, For Trade or Wanting to Buy

Welcome to the E46Fanatics forums. E46Fanatics is the premiere website for BMW 3 series owners around the world with interactive forums, a geographical enthusiast directory, photo galleries, and technical information for BMW enthusiasts.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.

Go Back   E46Fanatics > E46 BMW > ///M3 Forum

///M3 Forum
The BMW E46 ///M3 is the M version E46 and puts out an amazing 333 HP and 262 lb-ft of torque at stock specs! There are an amazing amount of modifications for both the coupe and convertible models so read up and get started modifying your cars today!

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 07-21-2013, 04:18 AM   #1
launch
Registered User
 
Join Date: Dec 2010
Location: Melbourne, Australia
Posts: 36
My Ride: 2001 BMW E46 M3
Fuel not reading full

Hi all,

So I've had some issues recently - I've filled up the car and it won't show full. Needle sits between 1/1 and the right most dot.

I've pushed as much fuel into it as possible to the point that the fuel gun is tripping each time I pull the trigger so I'm guessing it's full.

I've run the diagnostics on the cluster (http://forums.bimmerforums.com/forum...t-Cluster-Test).

Test 6.0. When the car is > 1/4 full it shows 000123 (0L left sensor 12.3L right sensor).

Then I fill it up as much as I can and it shows 192330 (19.2L left sensor 33.0L right sensor).

My guess is the left sensor should show 24.0L at full?

Does this mean my left sensor is dying?

Test 6.2 shows *1 both sensors ok but this could be cause the left sensor is failing and not failed (still within spec)?
launch is offline   Reply With Quote
Ads by Google

Guests, get your FREE E46Fanatics.com membership to remove this ad.
Old 07-21-2013, 12:04 PM   #2
m3e46freak
Registered User
 
Join Date: Feb 2009
Location: 'MERICA
Posts: 1,467
My Ride: e46/bike/Airplane?
One of your leveling sensors could of failed or been corroded.
__________________
Rock Hard Abs Racing


2004 JB / Cinnamon SMG - NAV - Heated Seats
Sonic Tuning Spacers 15mm
Alcantara Wheel/Boot/Pillars
BMC filter
Carbon Fiber: Doors/Seat Back/Trim/Paddles
Scorza muffler
CSL Bumper/Trunk
ST Coilovers

m3e46freak@yahoo.com for outside contacting
m3e46freak is offline   Reply With Quote
Old 07-22-2013, 09:49 AM   #3
launch
Registered User
 
Join Date: Dec 2010
Location: Melbourne, Australia
Posts: 36
My Ride: 2001 BMW E46 M3
Thanks for the response. Is there any way to check without pulling it out and doing the multimeter thing? My gut feeling is the left hand one is going (low reading on full tank) but I'm not about to buy a new sensor on a whim...
launch is offline   Reply With Quote
Old 07-22-2013, 02:33 PM   #4
Grinchxvx
Registered User
 
Join Date: Mar 2013
Location: Salt Lake City utah
Posts: 230
My Ride: 2001 M3, 1998 M3
Fuel not reading full

It could be something to do with your fuel sending unit also. It's on the driver side underneath the back seat and is just like replacing your fuel pump but the part is around 140 I believe. I've heard of people running out of gas early because of it and it sounds like you might be having the same issue.


Sent from BimmerApp mobile app
Grinchxvx is offline   Reply With Quote
Old 07-22-2013, 02:45 PM   #5
m3e46freak
Registered User
 
Join Date: Feb 2009
Location: 'MERICA
Posts: 1,467
My Ride: e46/bike/Airplane?
Two points really, fuel sending unit, or connectors on either side. Its pretty simple to check but if you undo the seals I suggest getting new seals.
__________________
Rock Hard Abs Racing


2004 JB / Cinnamon SMG - NAV - Heated Seats
Sonic Tuning Spacers 15mm
Alcantara Wheel/Boot/Pillars
BMC filter
Carbon Fiber: Doors/Seat Back/Trim/Paddles
Scorza muffler
CSL Bumper/Trunk
ST Coilovers

m3e46freak@yahoo.com for outside contacting
m3e46freak is offline   Reply With Quote
Old 07-23-2013, 06:31 AM   #6
Smith1
Registered User
 
Join Date: Jul 2013
Location: london
Posts: 16
My Ride: BMW
I've heard of people running out of gas early because of it the people have to face the sound issue
Smith1 is offline   Reply With Quote
Old 07-23-2013, 08:20 AM   #7
launch
Registered User
 
Join Date: Dec 2010
Location: Melbourne, Australia
Posts: 36
My Ride: 2001 BMW E46 M3
Quote:
Originally Posted by Grinchxvx View Post
It could be something to do with your fuel sending unit also. It's on the driver side underneath the back seat and is just like replacing your fuel pump but the part is around 140 I believe. I've heard of people running out of gas early because of it and it sounds like you might be having the same issue.


Sent from BimmerApp mobile app
Yeah thats what I'm talking about.

Your driver-side = my passenger side (Australia). i.e. LeftHand, LH.

Question is whether there is any way to be certain? Or whether anyone agrees with my reading of the on board diagnostic (which shows left sensor reading low at full tank)?
launch is offline   Reply With Quote
Old 07-23-2013, 08:22 AM   #8
launch
Registered User
 
Join Date: Dec 2010
Location: Melbourne, Australia
Posts: 36
My Ride: 2001 BMW E46 M3
Quote:
Originally Posted by DonovanM3 View Post
Two points really, fuel sending unit, or connectors on either side. Its pretty simple to check but if you undo the seals I suggest getting new seals.
Connectors on either side: do you mean the wires that connect to the pump/sensor? I've seen pictures of them breaking away but I don't think thats the issue or the diagnostics would show implausible input and my guage would be far more messed up?
launch is offline   Reply With Quote
Old 07-23-2013, 10:29 AM   #9
braymond141
Registered User
 
Join Date: Feb 2004
Location: Oakhurst, Ca
Posts: 1,748
My Ride: 96 M3, 98 M3, 01 M5
This is most likely a dirty potentiometer on the fuel level sender. Worst case the contacts are worn off (unlikely). Pull sender out and clean the contacts with contact cleaner. If you're not seeing them turn bright silver again, use a pencil eraser (don't get the shavings in your tank), and then clean up with isopropyl alcohol. This can be done on both sides. DON'T bend the brush that sweeps the face, they are a pain to re-bend and get right.(this may not be a big issue with the bmw senders, last one I cleaned was a ford)

(pink arrow)



__________________


Central California BMW Parts Swap
https://www.facebook.com/groups/1526941747526167/

Last edited by braymond141; 07-23-2013 at 10:34 AM.
braymond141 is offline   Reply With Quote
Old 07-29-2013, 08:25 AM   #10
launch
Registered User
 
Join Date: Dec 2010
Location: Melbourne, Australia
Posts: 36
My Ride: 2001 BMW E46 M3
Thanks guys, awesome as always. This really sounds like the issue. Next time I order parts from the states I'll get the rubber gaskets and give it a go.
launch is offline   Reply With Quote
Old 07-29-2013, 01:24 PM   #11
danwilz
Registered User
 
Join Date: Oct 2009
Location: Staten Island, New York
Posts: 533
My Ride: E46 M3 Vert 2012 X5
Quote:
Originally Posted by launch View Post
Thanks guys, awesome as always. This really sounds like the issue. Next time I order parts from the states I'll get the rubber gaskets and give it a go.
I fixed mine in my 330 with techron fuel treatment there was varnish from fuel built up on the sending rheostat.
__________________

Last edited by danwilz; 07-29-2013 at 01:24 PM.
danwilz is offline   Reply With Quote
Old 07-30-2013, 04:09 AM   #12
launch
Registered User
 
Join Date: Dec 2010
Location: Melbourne, Australia
Posts: 36
My Ride: 2001 BMW E46 M3
Quote:
Originally Posted by danwilz View Post
I fixed mine in my 330 with techron fuel treatment there was varnish from fuel built up on the sending rheostat.
Yeah I'll do this first. I haven't had much luck with the additives and engine cleaner stuff in the past but worth a shot.
launch is offline   Reply With Quote
Old 07-30-2013, 10:43 AM   #13
MemphisM3
Registered User
 
Join Date: Nov 2010
Location: Chicago Downtown
Posts: 49
My Ride: 02 PY M3
braymond141: answered
__________________

Der Teufel steckt im Detail.
MemphisM3 is offline   Reply With Quote
Old 09-04-2013, 10:36 PM   #14
ashleyk25
Registered User
 
Join Date: Sep 2013
Location: washington
Posts: 2
My Ride: 323ci
I replaced my fuel pump, and like a lot of people on here my fuel guage started ready wrong. so I replaced the fuel sending unit on the other side of the take. that didn't work. so I then reset my obc. still that didn't work. I need some help
ashleyk25 is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Censor is ON





All times are GMT -5. The time now is 09:23 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
(c) 1999 - 2011 performanceIX Inc - privacy policy - terms of use