 Alternator - Voltage Regulator, WTF |
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| Mblizzard |
 May 7 2013, 07:17 PM
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#1
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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. |
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| r_towle |
May 7 2013, 07:27 PM
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#2
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Custom Member Group: Members Posts: 24,705 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States 
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Seriously, tap the VR a few times, it may be stuck.
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| bcheney |
May 7 2013, 08:27 PM
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#3
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Senior Member Group: Members Posts: 1,341 Joined: 16-November 03 From: Orlando, FL Member No.: 1,348 Region Association: South East States |
QUOTE(r_towle @ May 7 2013, 09:27 PM)  Seriously, tap the VR a few times, it may be stuck. My six conversion is acting up with alt/reg issues. Has operated with no issues showing close to 14 volts on the gauge under power. Mine is a 2.2 carbed car with webers, MSD, internally regulated alternator and standard point ignition. A few days ago the gauge started reading 12 volts. I put a meter on the battery while its at idle and it says 11.85 volts. I share your pain as I have always been challenged by figuring out electrical problems....Maybe some of The 914World house experts can chime in and help us out... |
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| SLITS |
May 8 2013, 06:48 AM
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#4
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"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None  |
QUOTE(bcheney @ May 7 2013, 07:27 PM) QUOTE(r_towle @ May 7 2013, 09:27 PM) Seriously, tap the VR a few times, it may be stuck. My six conversion is acting up with alt/reg issues. Has operated with no issues showing close to 14 volts on the gauge under power. Mine is a 2.2 carbed car with webers, MSD, internally regulated alternator and standard point ignition. A few days ago the gauge started reading 12 volts. I put a meter on the battery while its at idle and it says 11.85 volts. I share your pain as I have always been challenged by figuring out electrical problems....Maybe some of The 914World house experts can chime in and help us out... Mine (2.7L) doesn't show correct charge until 2K (approximate) RPM on startup. I have to blip the throttle to get the light to go out. The diode or diodes in the alternator could be bad. The alternator makes AC voltage and is then rectified to DC. The brushes could have gone south (worn out). Pull the alt and have it tested. |
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| luskesq |
May 8 2013, 10:44 AM
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#5
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Member Group: Members Posts: 276 Joined: 24-October 10 From: Fresno, CA Member No.: 12,303 Region Association: Central California |
QUOTE(SLITS @ May 8 2013, 05:48 AM) QUOTE(bcheney @ May 7 2013, 07:27 PM) QUOTE(r_towle @ May 7 2013, 09:27 PM) Seriously, tap the VR a few times, it may be stuck. My six conversion is acting up with alt/reg issues. Has operated with no issues showing close to 14 volts on the gauge under power. Mine is a 2.2 carbed car with webers, MSD, internally regulated alternator and standard point ignition. A few days ago the gauge started reading 12 volts. I put a meter on the battery while its at idle and it says 11.85 volts. I share your pain as I have always been challenged by figuring out electrical problems....Maybe some of The 914World house experts can chime in and help us out... Mine (2.7L) doesn't show correct charge until 2K (approximate) RPM on startup. I have to blip the throttle to get the light to go out. The diode or diodes in the alternator could be bad. The alternator makes AC voltage and is then rectified to DC. The brushes could have gone south (worn out). Pull the alt and have it tested. Slits, if you have upgraded to an internally regulated alternator, they recommend a 91 ohm resistor added to the alternator light. My light drops out at about 1k rpm. Keith |
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Posts in this topic
Mblizzard Alternator - Voltage Regulator May 7 2013, 07:17 PM
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 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 |
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