not sure if my alternator is bad

Asked by Dec 20, 2015 at 07:30 AM about the 2003 Ford Explorer Limited V8 4WD

Question type: Maintenance & Repair

I think my alternator is bad not sure please help.ive
been having to get a jump to start car ,good
battery.and when it starts and I turn anything else
on such as heat or radio the lights go dim and the
heater starts to slow down and my check battery
light come on also my odometer and other gauge
stop working

3 Answers

58,535

All that is a very good indication of a bad alternator. If you have a volt meter you could check while it is running, at the battery, for 14.5 DC volts. If there is 12V or less, the alternator is not charging.

3 out of 3 people think this is helpful.
98,115

Sounds like a bad alternator...

1 out of 1 people think this is helpful.
17,210

Definitely sounds like the alternator. First make sure the connections to the battery are good and clean. You can remove the alternator and bring it to a place like autozone and they will check it for free. Before installing the new alternator, fully charge the battery if below 12.4 or so volts. Trying to charge a severely low battery by jump starting it then going for a nice long ride can damage the electronic components inside the new alternator. The alternator is designed to "maintain" your car battery at the proper charge, NOT charge a dead battery.

Your Answer

Add photo

Related Questions

Explorer

Looking for a Used Explorer in your area?

CarGurus has 74,285 nationwide Explorer listings starting at $750.

ZIP:

Search Ford Explorer Questions

Ford Explorer Experts

#1 OJ
OJ
Reputation 9,680
#2 Tom Demyan
Tom Demyan
Reputation 3,880
#3 tennisshoes
tennisshoes
Reputation 2,230
View All

Related Models For Sale

Used Ford Expedition
385 Great Deals out of 24,130 listings starting at $1,951
Used Jeep Grand Cherokee
808 Great Deals out of 69,878 listings starting at $995
Used Chevrolet Tahoe
602 Great Deals out of 27,562 listings starting at $600
Used Ford F-150
2,409 Great Deals out of 209,425 listings starting at $895
Used Dodge Durango
232 Great Deals out of 22,768 listings starting at $1,499
Used Ford Escape
1,047 Great Deals out of 92,513 listings starting at $1,500
Used Toyota Highlander
347 Great Deals out of 24,084 listings starting at $2,900
Used Honda Pilot
349 Great Deals out of 20,096 listings starting at $2,199
Used Toyota 4Runner
287 Great Deals out of 20,392 listings starting at $2,700
Used Nissan Pathfinder
291 Great Deals out of 22,837 listings starting at $2,250
Used Ford Explorer Sport Trac
66 Great Deals out of 1,971 listings starting at $750
Used GMC Yukon
392 Great Deals out of 16,276 listings starting at $1,800

Used Cars For Sale

2017 Ford Explorer For Sale
22 Great Deals out of 47,015 listings starting at $24,990
2016 Ford Explorer For Sale
120 Great Deals out of 5,612 listings starting at $19,976
2015 Ford Explorer For Sale
131 Great Deals out of 3,777 listings starting at $13,595
2014 Ford Explorer For Sale
222 Great Deals out of 6,228 listings starting at $11,995
2013 Ford Explorer For Sale
104 Great Deals out of 3,334 listings starting at $8,990