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Ask Ted G. Your Own Question
Ted G.
Ted G., ASE Certified Technician
Category: Car
Satisfied Customers: 6154
Experience:  20 years auto repair experience, ASE Master Tech, Mechanical Failure consultant, Expert Witness
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The gauge on the right with the battery....gauge is going to

Customer Question

the gauge on the right with the battery....gauge is going to the right into the red zone where it says 19......what could be the problem
Submitted: 2 years ago.
Category: Car
Expert:  Ted G. replied 2 years ago.

If the gauge is correct then your alternator is overcharging the electrical system. Do the lights seem really bright?

Customer: replied 2 years ago.
they do not
Expert:  Ted G. replied 2 years ago.

Okay, then it may be that the gauge is just failing. Any shop or even most auto parts stores can quickly check if the system is really at 19 volts. If it is then the alternator may be failed. If it is not then the gauge has failed. If it is charging to 19 volts it can do damage so someone should check that ASAP.

Customer: replied 2 years ago.
ok....what kind of damage would it cause and would it need a new alternator
Customer: replied 2 years ago.
what should I expect to pay for a new in northern calif
Expert:  Ted G. replied 2 years ago.

It can burn out most of the electrical parts, including the computer. Yes, it may need a new alternator if it is overcharging but it could also be a wiring or computer issue so a little more in depth diagnosis will need to be done. If it does need an alternator figure between $250-300 installed.

Customer: replied 2 years ago.
Expert:  Ted G. replied 2 years ago.

You're welcome.