Weird Voltage issue.
03-29-2008, 02:27 PM
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Weird Voltage issue. The car has a optima red top battery 2 and half years old, 160amp gm alternator 6 months old. My car will start fine, but after driving when you come to a stop light the voltage gauge bounces between 14 volts and 10 volts. But once I start driving it goes back to normal. The car doesn't sputter or die. The battery gets charged. I have a underdrive crankshaft pulley which is why I went with a bigger amp alternator. I have checked all the connections and grounds. Any other suggestions on possible fixes.
03-31-2008, 04:18 PM
#2
Dealt with this myself. Could be the idle is not what the tach is saying, actually is lower than what it shows. This will make for a low charge at idle and cause what you are seeing, especially when you turn the AC on or the fans kick on.
Could also be the alternator going out. I lost 3 in 5 months, AC Delco. Good thing I got the lifetime parts and labor deal!!
Also check our battery cables, may be corroded inside the insulation from the factory battery.
Could also be the alternator going out. I lost 3 in 5 months, AC Delco. Good thing I got the lifetime parts and labor deal!!
Also check our battery cables, may be corroded inside the insulation from the factory battery.
09-13-2008, 01:09 AM
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