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Check the voltage at the battery with the engine running. Use a DC volt meter set to the 20 volt scale. You should have a reading of between 13.5 & 15.5 volts. If the reading is significantly higher or lower than this then you need to drive it to the nearest auto parts store and have it checked professionally to be sure. But more than likely the alternator has failed.
What else can I help you with?
Will an alternator freeze up on 1999 Mercury Cougar?
If the bearings in the alternator get bad enough it can lock up.
What are the signs of bad voltage regulator on 1999 cougar?
It is built into your alternator
1997 GMC Sierra Battery light comes on?
Have your alternator checked. It could also be a bad cell in the battery.
What causes the alternator to stop working?
How to Tell If Your Car Alternator Is Bad Check related link below…
What could cause a 1999 Saturn SW2 to undercharge?
Weak alternator? Bad Voltage regulator? Alternator belt slipping?
Will a bad alternator keep a 1999 S10 pickup truck from starting?
The answer is no . The battery starts you vehicle , the alternator charges the battery so if your alternator is bad your battery is not receiving a charge which will cause a "no start" condition.
What would cause the battery to drain on a 1999 Ford Expedition 1999?
Bad Battery. Bad Alternator. Lights left on by mistake. Something left running. Exc.
How do you tell if your alternator is bad in your 1996 dodge neon?
you could pull off your positive battery cable if it stalls out then you alternator is the problem
Why are your head lights dim on your 1999 Chevy Venture?
Alternator is going out? battery is going bad?
What causes your alternator not to charge?
A bad belt, a bad regulator in the alternator or bad brushes in the alternator.
Why won't my 1999 LHS wont stay running after a jump start?
bad alternator, dead battery.
How do you know if you have a bad alternator on a 1999 Monte Carlo?
go to autozone and get a free charging system check.
