 Battery Charging System, Battery not charging |
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| Schmaz356 |
 Apr 20 2023, 10:46 AM
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#1
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Newbie  Group: Members Posts: 9 Joined: 4-November 21 From: Michigan Member No.: 26,054 Region Association: Upper MidWest  |
I am building a 914-6 and I have an issue where the battery does not charge. Basically everything is new on the car (alternator, voltage regulator, battery & cables). The car runs fine but just will not charge the battery. I have checked the grounds on the body and at the transmission. The belt seems fine and is new. I pulled the battery and the regulator and brought it to a shop where they said it was putting out 14.2V using my regulator.
My Alternator wires are as follows; Red from B+ to Starter Black from DF to DF on the Regulator Brown from D- to D- on Regulator Blue from D+ to D+ on Regulator and then to the Dash Battery Light. (which is on all of the time) Ground from D- to engine case. When I put the system back together, I checked the continuity of each cable to assure myself it wasn't just a pulled connector or broken wire. When the car is running and reved to 2,000 RPM I still only get battery voltage. Please help with any thoughts on what I should check next. Thanks. |
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| windforfun |
Apr 20 2023, 11:09 AM
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#2
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Advanced Member Group: Members Posts: 2,054 Joined: 17-December 07 From: Blackhawk, CA Member No.: 8,476 Region Association: None 
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Try a different voltage regulator. It should be providing about 13.4 V IIRC.
(IMG:style_emoticons/default/beerchug.gif) (IMG:style_emoticons/default/beerchug.gif) (IMG:style_emoticons/default/beerchug.gif) |
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| porschetub |
Apr 20 2023, 07:56 PM
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#3
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Advanced Member Group: Members Posts: 4,817 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
QUOTE(windforfun @ Apr 21 2023, 06:09 AM)  Try a different voltage regulator. It should be providing about 13.4 V IIRC. (IMG:style_emoticons/default/beerchug.gif) (IMG:style_emoticons/default/beerchug.gif) (IMG:style_emoticons/default/beerchug.gif) (IMG:style_emoticons/default/agree.gif) but was that a load test ? should have been, if so that max output voltage is ok,I had a Hella VR and it didn't play well with my Bosch (rebuilt) alternator ,swapped out to NOS Bosch VR and all was good. I have an AGM battery they tend to act a but funny but start really well even after sitting for a long time. If you are upping the RPM to that level and only getting standing battery voltage I would suggest you have an issue with the alternator not getting excitation via your connections,its the finer blue wire in the engine charging part of the loom . Is the ground strap from alternator to engine case in good condition ? ,mine was crappy and I replaced it for example. Have you done a load test on the system ,maybe that might wake it up ? Things to try good luck,cheers. |
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Posts in this topic
Schmaz356 Battery Charging System Apr 20 2023, 10:46 AM
Schmaz356 Thanks for the input. One other thought. I read on... Apr 21 2023, 06:17 AM davep The alternator light in the instrument CANNOT be a... Apr 21 2023, 08:38 AM
StarBear
The alternator light in the instrument CANNOT be ... Apr 21 2023, 08:45 AM ClayPerrine
[quote name='davep' post='3072804' date='Apr 21 2... Apr 21 2023, 10:46 AM Spoke
On a 914, the bulb must be an original 12 volt, ... Apr 21 2023, 11:34 AM ClayPerrine
[quote name='ClayPerrine' post='3072832' date='Ap... Apr 21 2023, 11:48 AM Spoke
I am building a 914-6 and I have an issue where t... Apr 21 2023, 10:25 AM dr914@autoatlanta.com do you have a replacement alternator with a built ... Apr 21 2023, 11:04 AM Schmaz356 Thanks to everyone. The issue was the fact I used ... Apr 22 2023, 09:14 AM brant You have to put a one way resistor into circuit
W... Apr 22 2023, 09:41 AM Superhawk996
You have to put a one way resistor into circuit
... Apr 22 2023, 10:40 AM brant Here is our racecar wiring Apr 22 2023, 10:38 AM brant Correct. Diode
Old man’s disease
Plus I really ... Apr 22 2023, 10:43 AM Schmaz356 When I saw the symbol I knew it was a diode. Thank... Apr 23 2023, 06:49 AM Schmaz356 Brant;
One more question.
I installed the diode li... Apr 24 2023, 09:17 AM brant I don't know...
thought that the light would ... Apr 24 2023, 09:23 AM Schmaz356 Brant;
One more question.
I installed the diode li... Apr 24 2023, 09:57 AM Schmaz356 Okay, Thanks. Apr 24 2023, 09:58 AM |
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