Amp meter in truck says 12 amps when truck is running. Brand new alternator and brand new battery. Charge reads 13.5 when on hand heldmeter at O'riely but in truck it says low. cable from pos. bat. ...
It is not unusual for the cluster gauge to be off a little or out of calibration, specially on older vehicles. You could have a voltage drop at the starter, corrision, bad wires or bad connection would cause it.
The 13.5vdc at the battery is a bare minimum though and could be a potential problem. With all your lights on and blower motor on high it could even be discharging.
I would check all your cables, and look closely at the grounds. Grounds to engine and frame. Also inspect the cables, lot of times when they corrode on the ends, the corrision will continue down the cable, like a cancer eating away, you can't see it because of the insulation...but it happens.
Good luck, i hope this helps.
Jul 16, 2011 |
Chevrolet Silverado 1500 Cars & Trucks