Home Forums Articles How To's FAQ Register
Go Back   Xoutpost.com > BMW SAV Forums > X5 (E53) Forum
Fluid Motor Union
User Name
Password
Member List Premier Membership Search Today's Posts Mark Forums Read

Xoutpost server transfer and maintenance is occurring....
Xoutpost is currently undergoing a planned server migration.... stay tuned for new developments.... sincerely, the management


Reply
 
LinkBack Thread Tools Display Modes
  #21  
Old 10-27-2022, 07:11 PM
Member
 
Join Date: Jun 2013
Location: Virigina, USA
Posts: 2,530
StephenVA is on a distinguished road
Double check all grounds

Remove them, clean, then reassemble including the one under the vehicle by the fire wall by your left foot area.
Test your alternator at the B+ battery post (the fat cable at the back of the Alt) Read volts with key on, engine at idle, 1500 and 2500 RPM steady for 15 secs. Does the volt reading fluctuate more than 1Volt?

Results: With key on you should get battery voltage. see chart above. You can NOT get an alternator to function properly with a bad or discharged battery.
If yes, bad regulator, brush contact to spinning parts. In other words, defective rebuilt unit.

Do a drop test on the battery cables in the trunk YES grounds and Bat + also. Many have chased problems only to discover the battery positive cable had been fired off by a hit. See positive cable view above.
__________________

2005 X5 4.8IS
The Blue ones are always FASTER....

Current Garage:
2005 X5 4.8is
2002 M5 TiSilver
2003 525iT
1998 528i
Former Garage Stable Highlights
2004 325XiT Sport
1973 De Tomaso Pantera, L Model
1970 Dodge Challenger T/A 4 sp Alpine White
1970 Dodge Challenger T/A 4 sp GoManGo Green
1971 Dart Sport, “Dart Light” package
1969 Road Runner 383
1968 Ply Barracuda 340S FB Sea-foam Green
Reply With Quote

Sponsored Links

  #22  
Old 10-27-2022, 08:19 PM
Member
 
Join Date: Sep 2022
Location: France
Posts: 23
Supr4 is on a distinguished road
Ok thanks I'll do my best with my little electrical knowledge.


For now I tried the drop test and saw no voltage at all
However in the configuration bellow the car refused to start i jiggled a little the negative multimeter side and the car made some weird noise and then I tried again and it started.
Attached Images
   

Last edited by Supr4; 10-27-2022 at 09:03 PM.
Reply With Quote
  #23  
Old 10-27-2022, 08:52 PM
Member
 
Join Date: Jun 2013
Location: Virigina, USA
Posts: 2,530
StephenVA is on a distinguished road
Disconnect your battery
Unbolt the jump point at the firewall
Clean both nuts and cable ends and reassemble
__________________

2005 X5 4.8IS
The Blue ones are always FASTER....

Current Garage:
2005 X5 4.8is
2002 M5 TiSilver
2003 525iT
1998 528i
Former Garage Stable Highlights
2004 325XiT Sport
1973 De Tomaso Pantera, L Model
1970 Dodge Challenger T/A 4 sp Alpine White
1970 Dodge Challenger T/A 4 sp GoManGo Green
1971 Dart Sport, “Dart Light” package
1969 Road Runner 383
1968 Ply Barracuda 340S FB Sea-foam Green
Reply With Quote
  #24  
Old 10-27-2022, 09:05 PM
Member
 
Join Date: Sep 2022
Location: France
Posts: 23
Supr4 is on a distinguished road
Ok I'll do tomorrow. I also noticed that when I put voltmeter on battery positive from the under the hood and other side either on the engine or negative jump point the voltage go all over the place. (Engine off)

Edit: now that I remember I already did that cleaning procedure it didn't work.
Reply With Quote
  #25  
Old 10-29-2022, 03:53 PM
Member
 
Join Date: Mar 2016
Location: Saskatchewan Canada
Posts: 1,542
80stech is on a distinguished road
There is so much going wrong here, Why is your meter on A/C volts? A huge problem is that that people aren't familiar with their meters when things are working and then don't know what they are looking at when trying to trouble shoot compounded by often oxidized test leads that cheap meters come with.
__________________
1988 325is (purchased new) sold
2004 X5 3.0 2005 X3 2.5
2008 X5 3.0 (new to me)
Reply With Quote
  #26  
Old 10-29-2022, 04:08 PM
Member
 
Join Date: Jun 2013
Location: Virigina, USA
Posts: 2,530
StephenVA is on a distinguished road
Under "Things you can find on the internet"
Here is the manual for this handheld volt meter
https://asset.conrad.com/media10/add...ounts-4000.pdf
__________________

2005 X5 4.8IS
The Blue ones are always FASTER....

Current Garage:
2005 X5 4.8is
2002 M5 TiSilver
2003 525iT
1998 528i
Former Garage Stable Highlights
2004 325XiT Sport
1973 De Tomaso Pantera, L Model
1970 Dodge Challenger T/A 4 sp Alpine White
1970 Dodge Challenger T/A 4 sp GoManGo Green
1971 Dart Sport, “Dart Light” package
1969 Road Runner 383
1968 Ply Barracuda 340S FB Sea-foam Green
Reply With Quote
  #27  
Old 10-29-2022, 05:00 PM
Member
 
Join Date: Sep 2022
Location: France
Posts: 23
Supr4 is on a distinguished road
I have no electrical knowledge whatsoever. Even if I read the manual and understand it I still don't know what to set it I saw 2V when testing voltage drop.
Reply With Quote
  #28  
Old 10-29-2022, 05:33 PM
Member
 
Join Date: Mar 2016
Location: Saskatchewan Canada
Posts: 1,542
80stech is on a distinguished road
Your best bet is still to take it back to the shop that did the alternator. They will probably have it figured out in a few minutes and charge you for an hour or two but you will be better off. Then when you have time you can study up on electrical and using the multimeter. There should be some electronics training kits available that can be really helpful with hands on practice instead of watching you-tube videos.
__________________
1988 325is (purchased new) sold
2004 X5 3.0 2005 X3 2.5
2008 X5 3.0 (new to me)
Reply With Quote
  #29  
Old 11-14-2022, 08:56 PM
Member
 
Join Date: Sep 2022
Location: France
Posts: 23
Supr4 is on a distinguished road
I don't know if it's related but when the engine is hot it sometimes get rough idle almost stalls specially when I decelerate to a red ligt. When cold it works perfectly. Today I tried to accelerate to max rpm in park for 15 seconds and after that it stalled and when starting it back again it also stalled. If I force it to run by pressing the gas pedal it stalls as soon as I stop. Also got a fireworks smell on the exhaust when I did that.
Reply With Quote
  #30  
Old 11-15-2022, 06:16 AM
Member
 
Join Date: Sep 2022
Location: France
Posts: 23
Supr4 is on a distinguished road
And multiple but rare times i started it and idle regime was very fast and oscillating rapidly clockwork between two regimes and was completely unresponsive to the gas pedal.
Can it be camshaft sensor or TPS or something?
Reply With Quote
Reply

Bookmarks

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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On





All times are GMT -4. The time now is 10:35 AM.
vBulletin, Copyright 2022, Jelsoft Enterprises Ltd. SEO by vBSEO 3.6.0
© 2017 Xoutpost.com. All rights reserved. Xoutpost.com is a private enthusiast site not associated with BMW AG.
The BMW name, marks, M stripe logo, and Roundel logo as well as X3, X5 and X6 designations used in the pages of this Web Site are the property of BMW AG.
This web site is not sponsored or affiliated in any way with BMW AG or any of its subsidiaries.