2000 E46 318i - Satan's speedo!

Notices
 

Thread: 2000 E46 318i - Satan's speedo!

Reply to Thread
Page 1 of 2 12 LastLast
Results 1 to 10 of 16
  1. 2000 E46 318i - Satan's speedo! 
    #1
    Bimmer Fan
    Car Details
    BM-Boy-2000's Car Details
    Model of Car:
    318
    Year of Manufacture:
    2000
    Transmission Type:
    manual
    Car Body Type:
    saloon

    Join Date
    Jan 2009
    Location
    UK
    Posts
    5
    Thanks
    4
    Thanked 0 Times in 0 Posts
    Hello All, wonder if anyone can please help with the below:

    My speedo goes up to the maximum 155 mph, and shows this speed no matter what speed i'm doing, the MPG gauge is also showing the incorrect reading (does not really move), when i brake the speedometer goes back down to zero, when i accelerate the needle shoots all the way up to the end of the dial. As this is not the wheel sensor as previously thought (according to a mechanic who did a quick inspection following changing one of my rear wheel bearings), any ideas what the hell this could be? The guy at the garage reckons its electrical so nothing he can help with, so far no ones seems to have a clue!! Luckily I have the sat nav to show the speed i'm doing so i can still drive..

    The rev counter and all other dispays on the dash are fine, no error codes..

    Any thoughts?

    Also, if i disconnect the battery for a short period will this help??

    I have a E46, 318, 2000 year model. Many thanks.
     
     

  2. Remove Advertisements
    BimmerForums.co.uk
    Advertisements
     

  3.  
    #2
    BMW Master
    Car Details
    Unknownsoldier's Car Details
    Model of Car:
    330Ci Sport
    Year of Manufacture:
    2001 (51)
    Transmission Type:
    SMG
    Car Body Type:
    Coupe/Convertable
    Unknownsoldier's Avatar
    Join Date
    Dec 2008
    Location
    Kent
    Posts
    478
    Thanks
    67
    Thanked 102 Times in 89 Posts
    Yeesh, never heard of this, perhaps a short circuit somewhere? E46's are they cable driven or electronic?

    Tom
     
     

  4.  
    #3
    Bimmerforums Central
    Car Details
    Boostist's Car Details
    Model of Car:
    E46 320i
    Year of Manufacture:
    2001
    Transmission Type:
    Manual
    Car Body Type:
    Coupe
    Boostist's Avatar
    Join Date
    Sep 2004
    Location
    Uk
    Posts
    8,035
    Thanks
    3,347
    Thanked 3,428 Times in 1,481 Posts
    Quote Originally Posted by BM-Boy-2000 View Post
    Hello All, wonder if anyone can please help with the below:

    My speedo goes up to the maximum 155 mph, and shows this speed no matter what speed i'm doing, the MPG gauge is also showing the incorrect reading (does not really move), when i brake the speedometer goes back down to zero, when i accelerate the needle shoots all the way up to the end of the dial. As this is not the wheel sensor as previously thought (according to a mechanic who did a quick inspection following changing one of my rear wheel bearings), any ideas what the hell this could be? The guy at the garage reckons its electrical so nothing he can help with, so far no ones seems to have a clue!! Luckily I have the sat nav to show the speed i'm doing so i can still drive..

    The rev counter and all other dispays on the dash are fine, no error codes..

    Any thoughts?

    Also, if i disconnect the battery for a short period will this help??

    I have a E46, 318, 2000 year model. Many thanks.

    Hi, I edited your post title to add your car info as per posting rules.


    Who said there was no error codes out of interest? have you had them read recently?

    If the wheel speed sensors have ALL been checked out as being ok....

    The vehicle then obtains its speed from a sensor on the differential. The vehicle speed sensor is located on the back cover (aluminum) of the differential, next to the fill and drain plugs.

    I would check and replace that as a first port of call...
     
     

  5. Remove Advertisements
    BimmerForums.co.uk
    Advertisements
     

  6.  
    #4
    Bimmerforums Central
    Car Details
    Boostist's Car Details
    Model of Car:
    E46 320i
    Year of Manufacture:
    2001
    Transmission Type:
    Manual
    Car Body Type:
    Coupe
    Boostist's Avatar
    Join Date
    Sep 2004
    Location
    Uk
    Posts
    8,035
    Thanks
    3,347
    Thanked 3,428 Times in 1,481 Posts
    edit//

    ohhh, Im assuming its a manual yes?

    If not it could be the output speed sensor in the transmission.. ouch!

    Are you sure the asc/dsc light isnt on?
     
     

  7.  
    #5
    Bimmer Fan
    Car Details
    BM-Boy-2000's Car Details
    Model of Car:
    318
    Year of Manufacture:
    2000
    Transmission Type:
    manual
    Car Body Type:
    saloon

    Join Date
    Jan 2009
    Location
    UK
    Posts
    5
    Thanks
    4
    Thanked 0 Times in 0 Posts
    Thanks all for your kind help, in answer to your query yes it is a manual, sorry forgot to mention this. I think I will try a BMW specialist to re-check the sensors on the wheels and will update this post with the outcome. The only thing to add when the speedo started going wrong, my car was frosted up as it was out in the snow, dont know if this would be a possible cause but thought i'd mention anyway.

    Thanks again.
     
     

  8.  
    #6
    BMW Maestro
    Car Details
    craigledden's Car Details
    Model of Car:
    525i se (E39)
    Year of Manufacture:
    2002
    Transmission Type:
    manual
    Car Body Type:
    saloon
    craigledden's Avatar
    Join Date
    Oct 2008
    Location
    northwich, cheshire
    Posts
    616
    Thanks
    144
    Thanked 99 Times in 82 Posts
    lol, i need photo's please?
    E39 525I
     
     

  9.  
    #7
    BMW Master
    Car Details
    Unknownsoldier's Car Details
    Model of Car:
    330Ci Sport
    Year of Manufacture:
    2001 (51)
    Transmission Type:
    SMG
    Car Body Type:
    Coupe/Convertable
    Unknownsoldier's Avatar
    Join Date
    Dec 2008
    Location
    Kent
    Posts
    478
    Thanks
    67
    Thanked 102 Times in 89 Posts
    If you can get a video you can post it on youtube or a similar hosting site and then embed it here, this will give a clue to your problem.

    Tom
     
     

  10.  
    #8
    BMW Guru
    Car Details
    Ronnie's Car Details
    Model of Car:
    See above
    Year of Manufacture:
    Never too old, never too new
    Transmission Type:
    Always manual
    Car Body Type:
    Usually 5 doors
    Ronnie's Avatar
    Join Date
    Dec 2007
    Location
    Bournemouth, Dorset.
    Posts
    20,398
    Thanks
    6,198
    Thanked 7,052 Times in 5,322 Posts
    Speedo is operated from the N/S/R/ wheel speed sensor.

    What side was the wheel bearing done on? And did it do it after it was fitted?

    Also like you mentioned get the codes read at a good BMW specialists, ABS codes and Instrument(Kombi) codes
     
     

  11. The Following User Says Thank You to Ronnie For This Useful Post:

    BM-Boy-2000 (15-01-2009)

  12.  
    #9
    Bimmer Fan
    Car Details
    BM-Boy-2000's Car Details
    Model of Car:
    318
    Year of Manufacture:
    2000
    Transmission Type:
    manual
    Car Body Type:
    saloon

    Join Date
    Jan 2009
    Location
    UK
    Posts
    5
    Thanks
    4
    Thanked 0 Times in 0 Posts
    Hi, the bearings went on o/s rear wheel a week or 2 before the speedo went funny. Could it still be the speed sensor at fault even though I have no DTC warning light on? I have booked in the car for a diagnostics check next week which should hopefully pinpoint the problem. I will also try disconnecting the battery for a while to see if this has any affect (however unlikely!).

    Am i right in presuming there are 2 speed sensors, one on each rear wheel, the one on the transmission is actually for measuring revs? So as my rev counter is operating normally, i can rule this out as being the problem, or am i completely wrong?

    Thanks again all.
     
     

  13.  
    #10
    Bimmerforums Central
    Car Details
    Boostist's Car Details
    Model of Car:
    E46 320i
    Year of Manufacture:
    2001
    Transmission Type:
    Manual
    Car Body Type:
    Coupe
    Boostist's Avatar
    Join Date
    Sep 2004
    Location
    Uk
    Posts
    8,035
    Thanks
    3,347
    Thanked 3,428 Times in 1,481 Posts
    Quote Originally Posted by BM-Boy-2000 View Post
    Hi, the bearings went on o/s rear wheel a week or 2 before the speedo went funny. Could it still be the speed sensor at fault even though I have no DTC warning light on? I have booked in the car for a diagnostics check next week which should hopefully pinpoint the problem. I will also try disconnecting the battery for a while to see if this has any affect (however unlikely!).

    Am i right in presuming there are 2 speed sensors, one on each rear wheel, the one on the transmission is actually for measuring revs? So as my rev counter is operating normally, i can rule this out as being the problem, or am i completely wrong?

    Thanks again all.
    I thought there was a speed sensor on one front wheel and one rear at the opposite side..??

    No, you cant rule the DIFFERENTIAL sensor out at all. it works in tandem with the speed sensors as far as I am aware.

    There is no transmissions sensor on the manual gearbox



    edit// It seems no one on Bimmerfest knows either
     
     

  14. The Following User Says Thank You to Boostist For This Useful Post:

    BM-Boy-2000 (15-01-2009)

Page 1 of 2 12 LastLast
Tags for this Thread

View Tag Cloud

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