 Voltage Regulator Connundrum, why won't the generator light come on? |
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| 72 IXXIV |
 Mar 12 2015, 05:34 PM
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Member  Group: Members Posts: 62 Joined: 1-January 15 From: San Francisco Member No.: 18,277 Region Association: Northern California  |
So I was about to head up to McMark's for the BBQ a couple weeks back, got in my car and the red charging light was on before I started the car (normal) and after I started the car (a problem).
The fan belt was present and tensioned, so I hoped it was the voltage regulator and not the alternator. I ordered a Hella regulator from Pelican Parts and while it would connect with the board, the relay board cover would not fit on. The plug on the hella is not in the same place on the regulator as the bosch one. But since it connected (at least!) I gave it a try. Turn on the key, but not started, and no charging light. Turn on the car, still no light. But also no charging. Voltage across my battery is almost 12v with the car off, and 11.5 with the car on. No charging. So I ordered a new Bosch voltage regulator, and just installed it. Same thing. No light with the key on and engine off (no oil light either this time!), no light with the engine on either. Still no charging across the battery. Hey, maybe the bulb(s) blew? I put the original, broken regulator back in, both dash lights light up when the key is on but the car is off, and the oil light goes out when its on, but the charging light stays on. And no charging across the terminals. What gives? Did I just get two bad voltage regulators? Am I missing something? Thanks for your thoughts, folks! |
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| ThePaintedMan |
Mar 13 2015, 10:26 AM
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Advanced Member Group: Members Posts: 3,887 Joined: 6-September 11 From: St. Petersburg, FL Member No.: 13,527 Region Association: South East States 
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Did you check the fuses?
Also, what is the voltage at the battery with the car running? Finally, if you still suspect the regulator, you can have then tested (even one of the new ones you bought) at the local FLAPS. |
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Posts in this topic
72 IXXIV Voltage Regulator Connundrum Mar 12 2015, 05:34 PM
Jeffs9146 You need to check the voltage going into the regul... Mar 12 2015, 06:49 PM ThePaintedMan :agree: but....
check your fuses too. I can... Mar 12 2015, 07:16 PM Krieger I had the exact problem a few years back when I bo... Mar 12 2015, 07:58 PM 72 IXXIV I thought that the bosch one I just got WAS analog... Mar 12 2015, 08:14 PM 72 IXXIV Where did you get your good used regulator, Andy? Mar 12 2015, 08:15 PM
Krieger
Where did you get your good used regulator, Andy?... Mar 12 2015, 10:12 PM McMark I'm ordering a new tech alternator that looks ... Mar 12 2015, 08:18 PM 72 IXXIV Here's another fact.
When I switch from the o... Mar 12 2015, 08:19 PM colingreene Its stuff like this that worries me when i think a... Mar 12 2015, 11:12 PM 72 IXXIV
Keep me posted, Mark. If I do end up needing to... Mar 13 2015, 09:44 AM 72 IXXIV
Did you check the fuses?
Also, what is the volta... Mar 13 2015, 11:28 AM stugray I would have to spend more time to digest everythi... Mar 13 2015, 01:04 PM 72 IXXIV Conundrum solved. It was the alternator. There w... Mar 15 2015, 10:21 AM 72 IXXIV One thing.
The alternator I bought had openings... Mar 15 2015, 10:26 AM 72 IXXIV both alternators side by side Mar 15 2015, 10:28 AM |
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