R3VLimited Forums

Go Back   R3VLimited Forums > E30 Technical Forums > General Technical

Reply
 
Thread Tools Search this Thread
Old 03-11-2019, 05:14 AM   #1
325e '87
Grease Monkey
 
Join Date: May 2017
Location: SC
Posts: 328
Generator, brake fluid, and park brake lights glowing

When my lights are on and engine at idle and up to 1000rpm, the generator, brake fluid, and park brake lights on the dash glow. Theyíre not full bright but just glow a bit until I rev the engine past 1200rpm.

Does this mean my alternator is going out? Or is there a voltage regulator or relay somewhere going bad?

I guess its obvious that my alternator is weak but Iím looking for confirmation and advice on it so that I can fix the car the way it should be. Any further info yíall have is appreciated.

The car is an Ď89 325i.
__________________
My son has the 1987 325e, 2 door, 5speed
I daily the 1989 325i, 4 door, 5speed
325e '87 is offline   Reply With Quote
Old 03-11-2019, 03:42 PM   #2
roguetoaster
R3V Elite
 
roguetoaster's Avatar
 
Join Date: Jan 2012
Location: Port Republic, MD
Posts: 4,211
Brushes are worn, depending on exactly which alternator you have in the car they may be easily replaceable, or you may end up needing a new alternator. Also inspect your alt ground, if one exists, while you are there, and if it looks fishy just replace it.
roguetoaster is offline   Reply With Quote
Old 03-11-2019, 03:47 PM   #3
ForcedFirebird
R3V OG
 
ForcedFirebird's Avatar
 
Join Date: Feb 2007
Location: WOT-Tech, Florida
Posts: 6,192
Stick a multimeter on the battery and see how many volts the alternator is throwing. Generally I see mid-high 13's on an e30 at the battery, 14+ right on the alternator.
__________________
john@m20guru.com
Links:
Transaction feedback: Here, here and here. Thanks
ForcedFirebird is online now   Reply With Quote
Old 03-12-2019, 07:20 AM   #4
325e '87
Grease Monkey
 
Join Date: May 2017
Location: SC
Posts: 328
Thanks gents. I did the Bentley tests and the voltage was on the low side of spec. The brushes in the alt were approx 7mm.

I’m throwing a new alt on her this morning. It’s the Oreilly $89 reman unit and will see if things settle. I don’t mind putting new parts on the car, I’m just a little paranoid when its possible that there is a more confusing deeper problem.
__________________
My son has the 1987 325e, 2 door, 5speed
I daily the 1989 325i, 4 door, 5speed
325e '87 is offline   Reply With Quote
Old 03-15-2019, 07:40 AM   #5
ForcedFirebird
R3V OG
 
ForcedFirebird's Avatar
 
Join Date: Feb 2007
Location: WOT-Tech, Florida
Posts: 6,192
Quote:
Originally Posted by 325e '87 View Post
Thanks gents. I did the Bentley tests and the voltage was on the low side of spec. The brushes in the alt were approx 7mm.

Iím throwing a new alt on her this morning. Itís the Oreilly $89 reman unit and will see if things settle. I donít mind putting new parts on the car, Iím just a little paranoid when its possible that there is a more confusing deeper problem.



Check the brushes before installing. I have had many an alternator that was "rebuilt" where they put the old brushes back in. SMH
__________________
john@m20guru.com
Links:
Transaction feedback: Here, here and here. Thanks
ForcedFirebird is online now   Reply With Quote
Reply

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 -7. The time now is 04:58 PM.


Powered by vBulletin® Version 3.8.10
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Copyright 2004 - 2020 R3VLimited LLC