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Old 05-31-2020, 01:12 PM
xavier296 xavier296 is offline
230 Tornado
 
Join Date: Feb 01, 2014
Location: Tampa, FL
Posts: 1
2 voltmeters show low

89 Wag, and the dash volt meter consistently shows low (~10 when not running, ~12.5 when running). A multimeter shows 14.25 at idle between the battery terminals, and 14.0 at the B sensor wire going in to the cluster.

I bought a used gauge cluster, thinking my gauge was bad, and the new one shows only slightly higher than above. Even when using a power probe with 12.7 volts going to the connections on the back of both gauges, both still show about 10 volts. Did I get unlucky and buy another cluster with a bad volt meter?

Thoughts?
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  #2  
Old 05-31-2020, 06:59 PM
wiley-moeracing wiley-moeracing is offline
350 Buick
 
Join Date: Feb 15, 2010
Location: arizona
Posts: 1,217
Yes.
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Old 06-02-2020, 10:03 PM
Heavy_Metal_Thunder_81's Avatar
Heavy_Metal_Thunder_81 Heavy_Metal_Thunder_81 is offline
Cherokee Outlaw
 
Join Date: Jan 10, 2006
Location: Haze Gray
Posts: 7,267
I have ran into high resistance at the plugs on the firewall causing gauges to read low. Might be worth a look before condemning the gauge.
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