Battery Light ON... Drains while running

Asked by Nov 23, 2016 at 06:36 PM about the 2001 Ford F-150 XLT Extended Cab LB

Question type: Maintenance & Repair

A few days ago, battery light came ON... Then pretty dramatic draw on Battery Gauge became evident.
Had Alternator checked... tested bad Voltage regulator which is inside the Alternator.  Changed out alternator and belt... charged drained battery and fired it up... battery lite still ON and truck acts like it is running off the battery alone.   Had NEW alternator tested and it passed.
Still heavy drain on battery when in operation.

2 Answers

71,585

Check the electrical plugs at the alternator. They're notorious, on Ford Products from this era, to burn out. HTH. -Jim

Any luck fixing it I'm having the same problem right now I have a 2007 Ford F-150 Harley Davidson it's draining the battery until it shuts completely off

Your Answer

Ford F-150 Experts

  • #1
    OJ
    Reputation
    9,250
  • #2
    dandyoun
    Reputation
    4,620
  • #3
    tennisshoes
    Reputation
    3,240
View All

Related Models For Sale

Used Chevrolet Silverado 1500
2,458 Great Deals out of 173,356 listings starting at $795
Used GMC Sierra 1500
1,135 Great Deals out of 65,443 listings starting at $1,995
Used Ford F-250 Super Duty
335 Great Deals out of 47,501 listings starting at $1,899
Used Toyota Tundra
590 Great Deals out of 35,250 listings starting at $2,900
Used Dodge Ram 1500
415 Great Deals out of 10,795 listings starting at $1,499
Used Toyota Tacoma
655 Great Deals out of 45,760 listings starting at $2,700
Used Ford F-350 Super Duty
335 Great Deals out of 26,219 listings starting at $3,300
Used Ford Mustang
558 Great Deals out of 36,312 listings starting at $1,500
Used Chevrolet Silverado 2500HD
325 Great Deals out of 30,665 listings starting at $3,500
Used Chevrolet Tahoe
785 Great Deals out of 42,024 listings starting at $1,980
Used Ford Explorer
1,086 Great Deals out of 70,543 listings starting at $1,000

Used Cars For Sale

2018 Ford F-150 For Sale
97,140 listings starting at $17,079
2017 Ford F-150 For Sale
151 Great Deals out of 41,012 listings starting at $17,990
2016 Ford F-150 For Sale
174 Great Deals out of 7,774 listings starting at $16,694
2015 Ford F-150 For Sale
428 Great Deals out of 11,581 listings starting at $11,990
2014 Ford F-150 For Sale
596 Great Deals out of 14,874 listings starting at $9,990

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.