Alternator light on? |
|
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. |
|
Alternator light on? |
914Toy |
May 30 2020, 01:19 PM
Post
#1
|
Senior Member Group: Members Posts: 717 Joined: 12-November 17 From: Laguna beach Member No.: 21,596 Region Association: Southern California |
My alternator light comes on with ignition on, and stays on with engine running, and voltage stays at 12V regardless of rpm's. Was charging regularly at nearly 14V. The fan belt is in good order at spec tension. The alternator was reconditioned a couple of years ago and now has about 5,000 miles on it. The diode behind the gauge was also replaced, but I have had the gauge in and out a few times working on other issues - possibly damaging it(?)
Before removing the alternator for testing, could the diode behind the gauge be faulty preventing charging? If so, what is the spec of these diodes? Your suggestions will be welcome. |
Spoke |
May 31 2020, 09:00 AM
Post
#2
|
Jerry Group: Members Posts: 6,978 Joined: 29-October 04 From: Allentown, PA Member No.: 3,031 Region Association: None |
...could the diode behind the gauge be faulty preventing charging? Below I'm showing the simplified schematic for the 914/4 charging system. The 911 charging system is very similar except the VR is located with the alternator. Notice there is no diode to speak of. Not sure what the diode on your gauge is for. Not sure even what the gauge has to do with the charging system except to hold the GEN light. |
Lo-Fi Version | Time is now: 2nd May 2024 - 09:59 AM |
All rights reserved 914World.com © since 2002 |
914World.com is the fastest growing online 914 community! We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ... |