E90Post
 


Motormavericks
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > Problem with fuel tank sender unit



Reply
 
Thread Tools Search this Thread
      03-03-2013, 03:10 PM   #1
Phil325i
Major
United Kingdom
13

 
Phil325i's Avatar
 
Drives: E92 325i MSport Coupe
Join Date: Apr 2012
Location: UK South East


Posts: 1,163
iTrader: (0)

Garage List
Problem with fuel tank sender unit

For reasons I won't bore you with, I've recently had a new fuel tank strainer/sender unit fitted to my 325i. Since then the fuel gauge no longer works properly.

The needle descends really fast for the first half a tank (full to half full in about 50 miles!) then sticks for about 180 miles around half full, then descends more slowly to empty. Car's been back to the dealer to have the sender 'recalibrated' though I doubt anything was done as it's just the same.

Anyone know if the signal the sender transmits to the gauge can be reset or recalibrated in any way?

Thanks guys.
__________________
E92 pre-LCI 325i - Ohlins R&T; H&R spacers; M3 strut brace; Meyle HD droplinks; BMS clutch stop; BMS CDV; RE g/box mounts; Saikoumichi OCC; K&N; Cyba scoops; BMW Perf Exhaust; M3 rear spoiler; M3 white dash LEDs; LED Angels; BMW Perf black grille; CSL reps; SSDD carbon diffuser; Monster Wrap black roof
Appreciate 0
      03-05-2013, 12:31 PM   #2
Phil325i
Major
United Kingdom
13

 
Phil325i's Avatar
 
Drives: E92 325i MSport Coupe
Join Date: Apr 2012
Location: UK South East


Posts: 1,163
iTrader: (0)

Garage List
68 views and not a single suggestion! Come on guys...
__________________
E92 pre-LCI 325i - Ohlins R&T; H&R spacers; M3 strut brace; Meyle HD droplinks; BMS clutch stop; BMS CDV; RE g/box mounts; Saikoumichi OCC; K&N; Cyba scoops; BMW Perf Exhaust; M3 rear spoiler; M3 white dash LEDs; LED Angels; BMW Perf black grille; CSL reps; SSDD carbon diffuser; Monster Wrap black roof
Appreciate 0
      07-03-2013, 03:09 PM   #3
Phil325i
Major
United Kingdom
13

 
Phil325i's Avatar
 
Drives: E92 325i MSport Coupe
Join Date: Apr 2012
Location: UK South East


Posts: 1,163
iTrader: (0)

Garage List
Update. After five visits to the stealer (!) the replacement sender unit proved to be faulty from new. Second replacement works fine.
__________________
E92 pre-LCI 325i - Ohlins R&T; H&R spacers; M3 strut brace; Meyle HD droplinks; BMS clutch stop; BMS CDV; RE g/box mounts; Saikoumichi OCC; K&N; Cyba scoops; BMW Perf Exhaust; M3 rear spoiler; M3 white dash LEDs; LED Angels; BMW Perf black grille; CSL reps; SSDD carbon diffuser; Monster Wrap black roof
Appreciate 0
      07-03-2013, 03:33 PM   #4
thecadman99
First Lieutenant
9

 
thecadman99's Avatar
 
Drives: e90 330i 6mt spt bk/bk
Join Date: Jun 2012
Location: Virginia


Posts: 373
iTrader: (0)

Glad you got it sorted. It doesn't look like a common problem or someone would've chimed in.
__________________
06 330i 6mt Spt- Eibach Springs, BMW Perf Susp, Supersprint Exhaust, BSW Audio
94 325i 5mt 4d- M3 springs/susp, Z3 wheels, Chipped, Intake, Exhaust= FUN!
Appreciate 0
      07-06-2013, 11:53 PM   #5
AllydNYC
Loading...
No_Country
84

 
AllydNYC's Avatar
 
Drives: 08' 328xi | 91' E30 318is
Join Date: Apr 2008
Location: Gilbert, AZ


Posts: 2,186
iTrader: (15)

Garage List
2008 328xi  [5.00]
Didn't see this thread, would have helped you with the information I know. For future reference for anybody that comes across it.

At around 33,000 miles a gasket in my fuel system wasn't full sealed causing a check engine light to display when the car pressurizes the fuel system. I got that resolved, new gas tank and other stuff put in. But then experienced a similar problem as OP:
Quote:
Originally Posted by Phil325i View Post
The needle descends really fast for the first half a tank (full to half full in about 50 miles!) then sticks for about 180 miles around half full, then descends more slowly to empty. Car's been back to the dealer to have the sender 'recalibrated' though I doubt anything was done as it's just the same.
A good amount of times I would drive 20 miles home to find out I gained fuel in my tank, according to the gauge. Took it to BMW (has full warranty) and thought I was retarded. Showed them two pictures of my dash, one of the gas gas/time/mileage and then one the next day or week with same mileage and the gas gauge would be in a different spot. I didn't use the car much so I would only fill it to a half of tank. Said they needed to duplicate it in person.

Well one day since I was clueless about how much gas I have, I filled it up to full which the gauge showed to be two lines from full. After complaining and showing them (BMW) there was a full tank of gas they finally took it in. Turns out one of the 'senders' that goes to the gauge was only reading at half volts or whatever. Got that replaced and has been fine since.
__________________

BBS CH w/PSS|H&R Coilovers|Front Strut Bar|CF CSL Trunk|Front Splitters|LCI Halogens|LUX 5.1|Blacklines|Black Grill|CF/White roundels
"A Associate or Bachelors degree is America's most over rated product"
Appreciate 0
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off
Forum Jump


All times are GMT -5. The time now is 12:08 PM.




e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST