Battery light stays on and battery drains while driving

Asked by Grizze Feb 16, 2020 at 11:19 AM about the 2002 Ford F-150 XLT 4WD SB

Question type: Maintenance & Repair

I have a 2002 ford F150 and the alternator went out changed it but the battery
light stayed on and the battery drained, so I replaced the battery and PCM and
battery cables and selenoid still have the same problem. It shows that the
alternator is only putting out 11.46 volts when hooked up but puts out 14 volts
when not hooked up. What can cause this issue?

1 Answer

Try your altinator jump start your truck and while its running pull positive battery cable off of battery if it keeps running its something else if it dies there's your problem

Your Answer:

Ford F-150 Experts

  • #1
    OJ
    Reputation
    26,310
  • #2
    F_O_R
    Reputation
    9,780
  • #3
    G A Arne
    Reputation
    9,650
View All

Find great deals from top-rated dealersTM

Search

Related Models For Sale

Used GMC Sierra 1500
1,174 Great Deals out of 61,310 listings starting at $1,499
Used Toyota Tundra
684 Great Deals out of 39,385 listings starting at $2,500

Used Cars for Sale

2020 Ford F-150 For Sale
7 Great Deals out of 131,000 listings starting at $18,561
2019 Ford F-150 For Sale
294 Great Deals out of 46,484 listings starting at $17,983
2018 Ford F-150 For Sale
471 Great Deals out of 12,419 listings starting at $14,253
2017 Ford F-150 For Sale
401 Great Deals out of 10,252 listings starting at $10,995
2016 Ford F-150 For Sale
492 Great Deals out of 12,180 listings starting at $9,480

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.