Bad Voltage Regulator? - AudiWorld Forums

Bad Voltage Regulator?

Thread Tools Search this Thread
Old 07-11-2001, 12:03 AM   #1
AudiWorld Super User
Thread Starter
Join Date: May 2001
Posts: 2,645
Default Bad Voltage Regulator?

I think the voltage regulator in my 88 80Q has gone bad. I put a multimeter on the battery and it read 12.6v, perfect. But when I started the engine it shot up to 14.6v, even peaked as high as 15.2v. After the engine warmed up, I noticed the RPMs would drop about a hundred for a few seconds, during which time the mulimeter would go haywire. If this is the voltage regulator, does it require replacement of the entire alternator, or can the regulator itself be replaced? How much would either option cost (ballpark). Thanks a lot.
BigMouse is offline   Reply With Quote
Old 07-11-2001, 12:45 AM   #2
AudiWorld Senior Member
Join Date: Apr 2001
Posts: 701
Default Re: Bad Voltage Regulator?

I had to replace my alternator due to some internal fault in the unit - it suddenly started to discharge my battery VERY rapidly.
You can buy the voltage regulator separately or just the alternator or both as a unit but quite expensive items. I opted for a used but younger alternator from an Audi used parts dealer for a lot lot less.
I have a voltage dial in my car and it does as you describe upon startup but holds a constant voltage above 12v when the engine reaches normal idle speed. Have you tried measureing the voltage at the voltage regulator terminals?
SiV6Qcoupe is offline   Reply With Quote
Old 07-11-2001, 12:55 PM   #3
AudiWorld Super User
Thread Starter
Join Date: May 2001
Posts: 2,645

May try testing that today. Thanks.
BigMouse is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
Wiring Harness Interior?? anordin2 A4 (B6 Platform) Discussion 3 02-08-2017 11:07 AM
My Salesman said the it true? Ray_QT Q5/SQ5 MKI (8R) Discussion 21 10-02-2015 01:50 AM
mutiple short to grounds problem solved-please read. jamile222 A6 / S6 (C5 Platform) Discussion 2 09-29-2015 11:22 AM
A6 1999y, 1.9tdi avant FWD air springs replacement. Markuzas A6 / S6 (C5 Platform) Discussion 5 09-28-2015 06:38 AM

2001, allroad, audi, bad, faulty, regulator, voltage

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

All times are GMT -8. The time now is 02:59 AM.

  • Ask a Question
    Get answers from community experts
What's your question?