Home  |  Forums  |  914 Info  |  Blogs
 
914World.com - The fastest growing online 914 community!
 
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG. This site is not affiliated with Porsche in any way.
Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners.
 

Welcome Guest ( Log In | Register )

> Alternator - Voltage Regulator, WTF
Mblizzard
post May 7 2013, 07:17 PM
Post #1


Advanced Member
****

Group: Members
Posts: 3,033
Joined: 28-January 13
From: Knoxville Tn
Member No.: 15,438
Region Association: South East States



Ok seems simple. Voltage light on dash on. Battery dies. Replaced voltage regulator with a wells VR650. Light on dash off. All seems good. But voltmeter shows the voltage dropping the longer the car runs until it dies. Voltage does not change regardless of engine speed.

Put the old regulator back on. Light on dash stays on regardless of engine speed. But voltmeter shows an increase in voltage with engine speed. I have not gotten the battery charged yet to see if running the engine discharges the battery.

I am at a loss as to what try next.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
 
Reply to this topicStart new topic
Replies
Mblizzard
post May 8 2013, 10:33 AM
Post #2


Advanced Member
****

Group: Members
Posts: 3,033
Joined: 28-January 13
From: Knoxville Tn
Member No.: 15,438
Region Association: South East States



Hard to guess against the Captian! But if the light was on with the Wells I would be content in that but there is only one thing to do. Where do I get the Bosch vetsion?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
AE354803
post May 8 2013, 07:09 PM
Post #3


Member
**

Group: Members
Posts: 238
Joined: 13-August 12
From: Southern California
Member No.: 14,801
Region Association: Southern California



The solid state hella unit from Pelican Parts is going to be way more reliable than the old bosch electromechanical relay VRs, unless you are doing concourse go to the new solid state VRs.

Also, they can't (won't) test the alternators at oreilly or autozone, maybe if you know someone with a machine then you can wire up the VR control circuit, otherwise you have to diagnose in the car.

I'd just replace the VR with the Hella unit and if that doesn't fix it at least you have a reliable VR.

I fixed my charging issue (seemed like a bad alternator) and saved myself a lot of hassle just by putting in the Hella VR.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post

Posts in this topic
Mblizzard   Alternator - Voltage Regulator   May 7 2013, 07:17 PM
r_towle   Seriously, tap the VR a few times, it may be stuck...   May 7 2013, 07:27 PM
bcheney   Seriously, tap the VR a few times, it may be stuc...   May 7 2013, 08:27 PM
SLITS   Seriously, tap the VR a few times, it may be stu...   May 8 2013, 06:48 AM
Mblizzard   Pull the alt and have it tested. That is what I...   May 8 2013, 07:23 AM
SLITS   Pull the alt and have it tested. That is what ...   May 8 2013, 07:29 AM
luskesq   [quote name='bcheney' post='1860984' date='May 7 ...   May 8 2013, 10:44 AM
SLITS   [quote name='bcheney' post='1860984' date='May 7...   May 8 2013, 03:54 PM
Elliot Cannon   [quote name='luskesq' post='1861215' date='May 8 ...   May 8 2013, 07:04 PM
Mblizzard   Seriously, tap the VR a few times, it may be stuc...   May 7 2013, 08:48 PM
Cap'n Krusty   Before you go any farther. Check the fuses and th...   May 8 2013, 07:50 AM
bcheney   Before you go any farther. Check the fuses and t...   May 8 2013, 08:10 AM
Mblizzard   Hard to guess against the Captian! But if the...   May 8 2013, 10:33 AM
AE354803   The solid state hella unit from Pelican Parts is g...   May 8 2013, 07:09 PM
damesandhotrods   I just replaced my voltage regulator about a month...   May 8 2013, 11:22 AM
Drums66   ....My advice, convert to electronic(VR) :thumbsu...   May 8 2013, 12:00 PM
damesandhotrods   I goofed; it is a Hella not a Bosch. But judging ...   May 8 2013, 12:06 PM
Mblizzard   Did not find a voltage regulator on the bird site....   May 8 2013, 03:34 PM
Cap'n Krusty   914s are not known for losing cooling function whe...   May 8 2013, 04:49 PM
ThePaintedMan   914s are not known for losing cooling function wh...   May 8 2013, 05:08 PM
mepstein   914s are not known for losing cooling function w...   May 8 2013, 05:19 PM
ThePaintedMan   [quote name='ThePaintedMan' post='1861331' date='...   May 9 2013, 07:30 AM
SLITS   Ok Experts .... I run a 2.7L six. Wanna repeat th...   May 8 2013, 06:24 PM
r_towle   Even I remember slits runs a six cylinder....and I...   May 8 2013, 06:26 PM
damesandhotrods   Pelican Parts - Product Info Electricity good…   May 8 2013, 06:44 PM
Mblizzard   Ok so here is the question. I have possibly two vo...   May 8 2013, 07:41 PM
r_towle   Is there an alternator test stand locally? We have...   May 8 2013, 07:44 PM
Mblizzard   Ok so maybe I will get that kick inthe groin anywa...   May 9 2013, 07:25 PM
r_towle   its faster to leave the engine in the car. Alterna...   May 9 2013, 08:51 PM
Tom   In post #15, you mentioned that the car died when ...   May 10 2013, 01:31 PM
Mblizzard   In post #15, you mentioned that the car died when...   May 10 2013, 02:29 PM
SLITS   In post #15, you mentioned that the car died whe...   May 10 2013, 03:25 PM
worn   In post #15, you mentioned that the car died whe...   May 13 2013, 03:11 PM
worn   Ok seems simple. Voltage light on dash on. Batte...   May 10 2013, 02:07 PM
Steve Snyder   I was always taught and read that if you disconne...   May 10 2013, 03:41 PM
damesandhotrods   When I went for my mechanics license, the word was...   May 10 2013, 05:17 PM
Tom   Mblizzard, I also am not an expert, however, my...   May 10 2013, 06:34 PM
Mblizzard   Tom thanks for the response. I really appreciate ...   May 10 2013, 07:28 PM
Mblizzard   Well went ahead and ordered new alternator. Did a...   May 12 2013, 04:55 PM
r_towle   Well went ahead and ordered new alternator. Did ...   May 13 2013, 03:18 PM
Mblizzard   Rich - brand new battery. Ran it all day no issu...   May 13 2013, 07:21 PM
stugray   Worn nailed it. The battery also acts as a volta...   May 13 2013, 09:39 PM
tommy914   I'm having similar issues. Alternator light gl...   Jun 3 2013, 07:52 PM


Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 



- Lo-Fi Version Time is now: 2nd April 2026 - 07:09 PM
...