How to check if my alternator is bad

Asked by Guru9WQGJF Mar 03, 2021 at 05:55 PM about the 2004 Buick LeSabre Limited Sedan FWD

Question type: Maintenance & Repair

Battery light stay on, just put new battery in
November of 2020. My idiot light doesn't
come on, the radio where it shows it's on or
off there's nothing on that my power
windows won't work, and my security light
stays on.

2 Answers
40,160

TDolby answered 3 years ago

You'll want to start the engine and open the hood. Then probe the battery terminates, both negative and positive with a multimeter set on volts. A properly charging alternator will register around 14V. Anything less than 13V is not good. With the engine off the battery should register 12 to 12.6 volts.

1 people found this helpful.
Mark helpful

Your Answer:

Related Questions

LeSabre

Looking for a Used LeSabre in your area?

CarGurus has 1 nationwide LeSabre listings and the tools to find you a great deal.

Postal Code:

Shortcuts

Search Buick LeSabre Questions

CarGurus Experts

  • #1
    John Saffrahn
    Reputation
    4,040
  • #2
    txbarney
    Reputation
    3,170
  • #3
    joes098
    Reputation
    2,700
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Buick Regal
3 Great Deals out of 25 listings starting at $6,995
Used Buick LaCrosse
4 Great Deals out of 26 listings starting at $7,495
Used Ford Crown Victoria
3 listings starting at $8,960
Used Honda Accord
47 Great Deals out of 973 listings starting at $2,995
Used Lincoln Town Car
3 listings
Used Buick Century
2 listings
Used Toyota Camry
50 Great Deals out of 1,123 listings starting at $784
Used Honda Civic
191 Great Deals out of 4,038 listings starting at $440
Used Toyota Avalon
3 Great Deals out of 39 listings starting at $6,995
Used Lexus LS
30 listings starting at $5,995
Used Chevrolet Silverado 1500
193 Great Deals out of 7,903 listings starting at $3,000
Used Chevrolet Impala
5 Great Deals out of 131 listings starting at $3,495

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.