Join Date: Sep 2007
Location: Rhode Island
NTL1991 is offline
Voltmeter/Gas Gauge Moves When Blinker Is On
I've only noticed this recently. The previous owner claims that the alternator is new and, in fact, it does look brand new.
The problem is that when I'm idling at a light or parked, my heater will bog down a bit (you can hear the blower motor slow down) and the voltmeter and gas gauge will go down and up, respectively. If I'm stopped at a light with the blower on high, my volts will be at about 9. As soon as I tap on the gas even a slight bit, it raises to near perfect voltage, my headlights get a bit brighter and the blower runs to full speed.
Could this be the regulator? If so, isn't it in the alternator which is new? Also, why will my gas gauge go up (past full if actually full) when the voltage drops? It doesn't move at all like some Blazers I've driven (you take a corner or hit the gas and the gauge moves around)
1997 Oldsmobile Bravada SmarTrac
4.3L V6 W-VIN w/ 145,000. Automatic Transmission.
Factory 3.73 PosiTrac; Z85 Suspension