Volts Guage

[MMG1989]

when i drive my MM i notice my volts go back and forward and sometimes just sit on 10 and i know thats not good so im thinking its my altenator so what do you guys think if yall have had this problem before?

[fastblackmerc]

when i drive my MM i notice my volts go back and forward and sometimes just sit on 10 and i know thats not good so im thinking its my altenator so what do you guys think if yall have had this problem before?

You voltmeter should always stay around 13V - 14.3V.

[MMG1989]

yea i know thats why i know its a problem cause it shouldnt be around 10 and 12

[RF Overlord]

The factory voltmeter, while real (unlike the oil pressure gauge), is not terribly accurate. You should use a digital VOM and check the voltage at the battery while running. Should be between 13.6 and 14.1 or so.

[capt512]

Mine was my battery causing this, but yours may vary. My battery voltage read good, but I had light fluctuation at night, and my gauge dropping low. Then I had 1 or 2 nights where the car wouldn't start. The battery checked fine at 2 places, but then finally they checked the CCA numbers and it was only 300, hence the problems.

[MMG1989]

yea i went to autozone and got my battery checked and it said good battery cause i thought the exact same thing