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. |
914Toy |
Jun 3 2020, 03:10 PM
Post
#2
|
Senior Member Group: Members Posts: 717 Joined: 12-November 17 From: Laguna beach Member No.: 21,596 Region Association: Southern California |
had the Alternator checked this morning. Not charging because on or more of the diodes had failed. Expect to pick up the alternator tomorrow morning and have it back in the car by the end of the day. So I expect to join all of you on Saturday morning early (IMG:style_emoticons/default/driving.gif)
|
porschetub |
Jun 3 2020, 05:57 PM
Post
#3
|
Advanced Member Group: Members Posts: 4,697 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
had the Alternator checked this morning. Not charging because on or more of the diodes had failed. Expect to pick up the alternator tomorrow morning and have it back in the car by the end of the day. So I expect to join all of you on Saturday morning early (IMG:style_emoticons/default/driving.gif) Good result Keith,can be frustrating sorting issues with charging systems (IMG:style_emoticons/default/headbang.gif) ,my Bosch 55a unit has kinda has been a PITA after being full rebuilt,NOS Bosch regulator and rebuilt relayboard added later have helped somewhat but don't think these old units play well with AGM battteries at its max charge under load is around 13.5V but it still appears to be working when it needs to (IMG:style_emoticons/default/biggrin.gif) . |
Lo-Fi Version | Time is now: 2nd May 2024 - 05:46 PM |
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 ... |