Welcome to Bimmerfest -- The #1 Online Community for BMW related information! Please enjoy the discussion forums below and share your experiences with the 200,000 current, new and past BMW owners. The forums are broken out by car model and into other special interest sections such as BMW European Delivery and a special forum to voice your questions to the many BMW dealers on the site to assist our members!

Please follow the links below to help get you started!

Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 7 Series / 8 Series

7 Series / 8 Series
The BMW 7 series and 8 Series Forum

 
 
Thread Tools Display Modes
  #1  
Old 03-09-2010, 05:53 PM
Beam Man Beam Man is offline
Registered User
Location: Jenison Michigan
 
Join Date: Feb 2010
Posts: 32
Mein Auto: 1988 735IL
88 735iL - Jumpy speedometer, owners handbook question

My 1988 735il has a jumpy speedometer, does anybody have any ideas? Also, how does it know that the owners manual is not there? Is it magnetic or does it have a microswitch. I don't know where it's supposed to be kept. Thanks
Ads by Google
  #2  
Old 03-09-2010, 08:45 PM
TerryY's Avatar
TerryY TerryY is offline
Old Fogey
Location: Woodland Washington
 
Join Date: Jul 2003
Posts: 662
Mein Auto: BMW '95 840
The speed sensor is in the differential. It is on the back side and most likely needs to be taken out and cleaned. It acts like a magnetic plug and picks up all of the fine metal wear bits in the differential.
__________________
Terry
Woodland Washington
'95 840Ci
'00 Range Rover Vitesse
www.wuffer.net
www.8coupe.com
www.8er.org
  #3  
Old 03-10-2010, 07:04 AM
Beam Man Beam Man is offline
Registered User
Location: Jenison Michigan
 
Join Date: Feb 2010
Posts: 32
Mein Auto: 1988 735IL
Thanks Terry, Should I have a plastic plug ready when I pull the sensor, does the differential oil come out when you take out the sensor? Anyway, thanks a ton, I'll be under there today.
  #4  
Old 03-10-2010, 07:13 AM
TerryY's Avatar
TerryY TerryY is offline
Old Fogey
Location: Woodland Washington
 
Join Date: Jul 2003
Posts: 662
Mein Auto: BMW '95 840
Oil level should be at the bottom of the fill plug which should be lower than the sensor.
__________________
Terry
Woodland Washington
'95 840Ci
'00 Range Rover Vitesse
www.wuffer.net
www.8coupe.com
www.8er.org
  #5  
Old 03-10-2010, 07:22 AM
Beam Man Beam Man is offline
Registered User
Location: Jenison Michigan
 
Join Date: Feb 2010
Posts: 32
Mein Auto: 1988 735IL
Thanks a million Terry, happy touring. Any ideas on the owners handbook message on the error board?
  #6  
Old 03-10-2010, 08:53 AM
TerryY's Avatar
TerryY TerryY is offline
Old Fogey
Location: Woodland Washington
 
Join Date: Jul 2003
Posts: 662
Mein Auto: BMW '95 840
I think it is telling you to look up the meaning of an error in the handbook. Is there a message before the handbook one?
__________________
Terry
Woodland Washington
'95 840Ci
'00 Range Rover Vitesse
www.wuffer.net
www.8coupe.com
www.8er.org
  #7  
Old 03-10-2010, 02:26 PM
Beam Man Beam Man is offline
Registered User
Location: Jenison Michigan
 
Join Date: Feb 2010
Posts: 32
Mein Auto: 1988 735IL
I changed the brake pads and the sensors were shot. I ordered some new ones but haven't put them on. that's the only other message. brake linings and owners handbook. I'll put those sensors on today as well, and post how it went. Thanks again.

Adolfo
  #8  
Old 03-10-2010, 06:10 PM
Beam Man Beam Man is offline
Registered User
Location: Jenison Michigan
 
Join Date: Feb 2010
Posts: 32
Mein Auto: 1988 735IL
Well, you were absolutely right, both the brake linings and the owners handbook are now gone and there's nothing there but a nice black area. When I push the button, I get a cool empty marquee. thanks.
However, on the speedometer sensor, ugh ugh ugh. I jacked up the car all the way and got under there. brushed all the grime and got ready to remove it, but the crossmembers and the area is so restricted, I couldn't even get a wrench in there. The bottom bolt is somewhat accessible but the top one is impossible. I gave up after a couple of hours. I'll do some research on it. I bet you the gas tank has to be removed or the differential dropped. Else, $1000 bucks at the stealership ; )
 

Bookmarks


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 7 Series / 8 Series
Today's Posts Search
Thread Tools
Display Modes

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



Forum Jump


All times are GMT -7. The time now is 07:40 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
© 2001-2011 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms