Optimum Voltage from Alternator
Thread Starter
Le Mans Master
Joined: May 2006
Posts: 6,774
Likes: 363
From: Midland TX
Optimum Voltage from Alternator
This is a more targeted post to one I made previously regarding a recent Alternator swap...
I just installed an Ultima Re-Manufactured Alternator from O'Reillys today to replace a GM Valeo that died on me a couple days ago.
My voltage on the dash gauge AND the DIC now read 14.3V steady. This is the first time since I have owned the car that I have seen the fabled 14+ Volts! Both my factory Valeo alternators in the past never got me above 13.7 on their best day. I am showing 15.1 Volts at the battery with the car running.
My question is are these new voltage readings I am getting in the SAFE RANGE?
I just installed an Ultima Re-Manufactured Alternator from O'Reillys today to replace a GM Valeo that died on me a couple days ago.
My voltage on the dash gauge AND the DIC now read 14.3V steady. This is the first time since I have owned the car that I have seen the fabled 14+ Volts! Both my factory Valeo alternators in the past never got me above 13.7 on their best day. I am showing 15.1 Volts at the battery with the car running.
My question is are these new voltage readings I am getting in the SAFE RANGE?
Team Owner
Joined: Mar 2001
Posts: 21,325
Likes: 3,841
From: small town in S.E Pa. PA
St. Jude Donor '03-'04
This is a more targeted post to one I made previously regarding a recent Alternator swap...
I just installed an Ultima Re-Manufactured Alternator from O'Reillys today to replace a GM Valeo that died on me a couple days ago.
My voltage on the dash gauge AND the DIC now read 14.3V steady. This is the first time since I have owned the car that I have seen the fabled 14+ Volts! Both my factory Valeo alternators in the past never got me above 13.7 on their best day. I am showing 15.1 Volts at the battery with the car running.
My question is are these new voltage readings I am getting in the SAFE RANGE?
I just installed an Ultima Re-Manufactured Alternator from O'Reillys today to replace a GM Valeo that died on me a couple days ago.
My voltage on the dash gauge AND the DIC now read 14.3V steady. This is the first time since I have owned the car that I have seen the fabled 14+ Volts! Both my factory Valeo alternators in the past never got me above 13.7 on their best day. I am showing 15.1 Volts at the battery with the car running.
My question is are these new voltage readings I am getting in the SAFE RANGE?
Thread Starter
Le Mans Master
Joined: May 2006
Posts: 6,774
Likes: 363
From: Midland TX
Looks like things have settled down since the car warmed up and the battery had stabilized... now getting 12.88volts at rest and 14.20volts running.
Tech Contributor
Joined: May 2008
Posts: 3,100
Likes: 17
From: Somers, CT and Clermont, FL
St. Jude Donor '09-'10-'11-'12-'13-'14-'15-'16
