Low Reading on Amp Gauge

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Low Reading on Amp Gauge

Postby Horsehammerr » Thu Aug 12, 2010 4:24 am

I've noticed lately , when I start my truck the gauge reads like always a little over 14. But now as I warm up on down the road my gauge has dropped to about 12.5. This is with all elec. acc. off. Is this a sign of a major problem ? :?:
'02ZR5 YellowCruzCab-Airbox chopped,Quadlights,Intake defuser chopped,Precat chopped,HD Bilsteins, 8x15x3 3/4"back space alloys,30x9.50R15 Hankook Dynapro ATM RF10's, Gutted Main Cat, ZQ8 rear Sway Bar, Full size Bump Stops: solid front, hollow rear, Front & Rear wheel wells and ZR5 flares SKIDZ cut, 1.5" Daystar Lift Shackles, TB's cranked 1.5"
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Re: Low Reading on Amp Gauge

Postby HenryJ » Thu Aug 12, 2010 4:44 am

Sounds like you need to have your alternator tested. Might be time for that AD244 swap?

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Re: Low Reading on Amp Gauge

Postby killian96ss » Thu Aug 12, 2010 4:47 am

Check the voltage @ the alternator with a multimeter. If its between 14-15 volts your ok. If its under 14 volts, you may need a new alternator. Sometimes our high quality GM gauges are the problem!

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