Funky Autometer issue...... - Team Camaro Tech
Electrical & Wiring Troubleshooting electrical.

 
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post #1 of 3 (permalink) Old May 26th, 09, 10:23 PM Thread Starter
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Joe
 
Join Date: Apr 2007
Location: Liberty Hill, TEXAS
Posts: 934
Funky Autometer issue......

Hey guys, I recently performed a bunch of body work and restoration.

When I started it up, I noticed the Autometer voltage gauge was reading 18+ voltage (maxed completely out). So, I killed it, ran and got my trusty digital multimeter...hooked it up and she is actually putting out a normal 14.3ish. So, that eliminated an overcharging issue.

I am just wondering if I could have possibly hooked up the gauge wrong. My car has an LS1 motor, but I still don't see how it could screw with a mechanical voltage meter. How the heck is it reading 18+ volts anyway? Thats actually the question here. Didn't know the alternator could put out more than 14ish volts....unless it's broken, and that clearly isn't the case here.

Thanks for your time,

~Joe

1969 Camaro....LS1/T-56.............
In the early stages of Pro-Touring

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post #2 of 3 (permalink) Old May 26th, 09, 10:55 PM
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Join Date: Jul 2005
Location: California
Posts: 2,353
Re: Funky Autometer issue......

Check the ground. But I think that would give you a lower reading?

My only other guess it that the leads might be switch on the gauge...
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post #3 of 3 (permalink) Old May 27th, 09, 11:40 AM
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Join Date: Mar 2002
Location: Austin, TX, USA
Posts: 5,277
Re: Funky Autometer issue......

Grounds can fool with your readings for sure. But usually a bad ground will cause you to read less voltage - not more.

Measure the voltage at the back of the meter to see if it jives with what you measure at the battery (14.3-ish as you said). It seems like autometer gauges have a potentiometer inside the back of the housing where the bulb inserts. Remove the bulb and peek inside. If you see a tiny screw adjustment, observe where it current sits and give it a tweak with a small (perhaps jewler's) screwdrive to see if you can dial in the gauge reading to match the voltage accross it's terminals.

Dave
========================
68 Coupe, 350 w/ Edelbrock Performer RPM heads, cam, intake, 700R4, Dave's small body HEI
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