Battery voltage torque pro

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Mar 20, 2019 | 06:11 PM

M3rc

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Senior User

Joined: Oct 2016

Posts: 209

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Battery voltage torque pro

I'm using Tuglys Pid config files for Torque Pro. My question is where does that voltage come from and what is normal to see. I just replaced my alternator and have fully charged up batteries. I'm seeing 14.6 voltage at the alternator at idle. And with the truck off, I get 12.6v at the batteries. But torque pro doesn't show more than 13.3 volts avg around 13.1v is this normal or should I be hunting for bad connections?

Mar 20, 2019 | 09:19 PM

'88 E-350

Fleet Mechanic

Joined: Jul 2010

Posts: 1,753

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From: Los Angeles, Ca.

On torquepro I see about .8-.9 volts less than the true battery voltage with their pids, I didn't know Tugly had his own.

Mar 21, 2019 | 07:04 AM

Tugly

Hotshot

Joined: Jan 2011

Posts: 18,849

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From: Puget Sound

Neither of those readings sound ideal - which could indicate a loose connection somewhere. The PID is not likely to be wrong, it reads straight off the battery cable with a high-quality sensor. Taking a reading with a meter at the alternator is not the same as reading straight off one of the batteries - at the posts. Poor connection at the battery posts or the alternator can make the alternator read high.

Another thing - some meters don't read accurately, and some meter leads don't allow the meter to read accurately.

Mar 21, 2019 | 07:29 AM

slowsure

Tuned

Joined: Dec 2016

Posts: 260

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From: Southern Middle TN

I seem to remember their be at least 2 PIDs on the list in TorquePro when selecting them for use on the monitoring screen. The one I use is named Volts(AD) in the monitoring screen. I believe it reads voltage at the adapter (OBDII port).
I also have an USB charger installed that has a voltage gage in it. It commonly reads .5v lower.

Last edited by slowsure; Mar 21, 2019 at 07:47 AM. Reason: Edit PID screen name