 Voltmeter reading? Accuracy? |
|
|
|
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. |
|
|
| SKL1 |
 Jan 5 2026, 09:52 PM
Post
#1
|
|
Senior Member  Group: Members Posts: 1,744 Joined: 19-February 11 From: north Scottsdale Member No.: 12,732 Region Association: Upper MidWest 
 |
Trying to figure out how accurate the OEM voltmeter is in my '73 2.0. To make a long story shorter the engine in the car is a much modified 1.9 from my '71, with approx 120K miles on the alternator.
Voltmeter reads around 11V and drops to 10 if I turn on the headlights. Immediately goes back to 11 or just over that with the lights turned off. Replaced the voltage regulator this AM and did a test drive with no change. Gauge never gets close or above 12V. Makes me afraid to drive it at night with the lights on and go very far. Do I need to go through the hassle of rebuilding the alternator or trying the alternator from the original 2.0 engine that has about 70K miles on it? Better way to get a more accurate reading of actual voltage?? I hate electrical issues!!!! TIA. |
   |
 
|
Posts in this topic
SKL1 Voltmeter reading? Accuracy? Jan 5 2026, 09:52 PM
mjrrti
Trying to figure out how accurate the OEM voltmet... Jan 5 2026, 11:16 PM mjrrti The brand didn’t show in my pic but it is zeehoo... Jan 5 2026, 11:22 PM 930cabman I have found voltmeter readings somewhat erratic, ... Jan 6 2026, 05:58 AM emerygt350 It's really not the voltmeter, I checked mine ... Jan 6 2026, 06:36 AM GregAmy
Trying to figure out how accurate the OEM voltmet... Jan 6 2026, 08:15 AM
SKL1 Thanks. The meter in the lighter sounds great but... Jan 6 2026, 11:47 AM  |
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 8th January 2026 - 05:48 PM |
Invision Power Board
v9.1.4 © 2026 IPS, Inc.