![]() |
|
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. |
|
![]() |
customstarr |
![]()
Post
#1
|
King of the Nighttime World ![]() ![]() Group: Members Posts: 116 Joined: 13-February 07 From: Waterford, Michigan - Home of Waterford Hills Road Racing Member No.: 7,531 ![]() |
Ok... heres a good one: I've had my car for about three months - most of the time it's been in storage - never once lost a charge during the cold winter - even after sitting for weeks without starting. Last week, I brought it home from storage and started some detail cleaning on it - everything was fine.
Then, while driving it, it seemed the FI was messing up - just wasn't running that great. I get home, go to restart it and the battery is DEAD. The PO put the wrong battery in it anyway, so I went and purchased a brand new battery today. I put it in, the car fires up and runs great - for a minute - then it seems like its acting up again. I shut it down, try to restart, and the BRAND NEW BATTERY IS DEAD. Here's the kicker: My GEN light works - comes on during key up, but does not stay illuminated while running. How could a brand new battery get immediately drained after running for just a few minutes unless the ALT is bad - but then again, why am I getting no GEN light? PLEASE HELP! Possible Voltage Reg problem? |
![]() ![]() |
pbanders |
![]()
Post
#2
|
Senior Member ![]() ![]() ![]() Group: Members Posts: 943 Joined: 11-June 03 From: Phoenix, AZ Member No.: 805 ![]() |
Two things - first, as DD said, you have to make sure the battery is fully charged before you install it. The only way to reliably do this is to either use a manual charger and measure the specific gravity of the water/acid, or to use an automatic charger.
Second - your fully charged battery should read 12.75 V with a DMM. Not 12 V, not 12.2 V, not even 12 V, it's got to read 12.75 V. If it reads less, then it's not fully charged. To measure this correctly, you must first remove the surface charge - do that by turning on the lights for 10 minutes before measuring across the battery posts with your DMM. |
![]() ![]() |
![]() |
Lo-Fi Version | Time is now: 13th July 2025 - 07:11 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 ... |