Want to now why my battery light is on, I just put a new alternator on.

Asked by Dec 07, 2014 at 09:53 AM about the 1990 Ford Mustang GT Hatchback

Question type: Maintenance & Repair

3 Answers

74,005

If battery light is on,and you just replaced alternator,have battery test loaded,to make sure it,s good,then recheck all the connection,s at the alternator,then go have that new alternator checked,1 out of 4 are bad to start with,autozone,advance,and most auto parts.

5,995

If it just started, have you tried just disconnecting the battery for about 15 minutes to let everything reset? If you have access to a multimeter, you can start the engine and put the meter on your battery. With the engine running and a functioning alternator the voltage at the battery should be over 14 volts. If it's less, then maybe it's a defective alternator, so you then meter the output of the alternator at the back of it.

Thanks I'll give it a try

Your Answer

Mustang

Looking for a Used Mustang in your area?

CarGurus has 37,084 nationwide Mustang listings starting at $2,150.

ZIP:

Ford Mustang Experts

  • #1
    Tom Demyan
    Reputation
    4,970
  • #2
    F_O_R
    Reputation
    1,490
  • #3
    Bob Beaman
    Reputation
    1,430
View All

Related Models For Sale

Used Chevrolet Camaro
229 Great Deals out of 28,958 listings starting at $2,000
Used Chevrolet Corvette
104 Great Deals out of 15,424 listings starting at $3,900
Used Ford F-150
2,304 Great Deals out of 216,125 listings starting at $1,300
Used BMW 3 Series
822 Great Deals out of 32,502 listings starting at $995
Used Jeep Wrangler
244 Great Deals out of 18,810 listings starting at $2,695
Used BMW M3
13 Great Deals out of 1,647 listings starting at $6,599
Used Honda Civic
344 Great Deals out of 52,570 listings starting at $1,200

Used Cars For Sale

2018 Ford Mustang For Sale
14,780 listings starting at $19,489
2017 Ford Mustang For Sale
77 Great Deals out of 7,155 listings starting at $16,699
2016 Ford Mustang For Sale
40 Great Deals out of 2,263 listings starting at $12,391
2015 Ford Mustang For Sale
17 Great Deals out of 2,170 listings starting at $11,995
2014 Ford Mustang For Sale
25 Great Deals out of 1,818 listings starting at $9,588

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.