What causes my 1978 F100 truck battery to drain once I drive my truck and stop some where? When I try to start it again the battery drags to where it almost don't start. It's a 3 year old battery

10

Asked by Jul 03, 2014 at 06:05 PM about the Ford F-100

Question type: Maintenance & Repair

3 Answers

70,825

Does it only happen when the engine is hot? If so could be your starter is getting lazy or your ignition timing is advanced too far, or the engine is running too hot. Load test the battery and make sure it's holding a full charge too. HTH. -Jim

10

Check the water in the battery. The cells may have no water over them. Yes I've seen batteries with no water in them. Don't believe in maintence free. Lift the covers off and check. Wiggle the posts to make sure they are solid into the battery. May be broken inside. Autozone or a parts store should be able to check the battery and alternator for free if there is one near you.

1 of 1 people found this helpful.
10

Thanks guys. It was the battery. The battery was actually 12 years old. Yes 12 years old! I bought the truck from a older gentleman.

1 of 1 people found this helpful.

Your Answer

F-100

Looking for a Used F-100 in your area?

CarGurus has 160 nationwide F-100 listings and the tools to find you a great deal.

ZIP:

Ford F-100 Experts

  • #1
    tennisshoes
    Reputation
    480
  • #2
    MrBlueOval
    Reputation
    310
  • #3
    Rowefast
    Reputation
    280
View All

Related Models For Sale

Used Ford F-150
2,536 Great Deals out of 193,421 listings starting at $799
Used Ford F-250
478 listings starting at $2,995
Used Ford Mustang
606 Great Deals out of 36,209 listings starting at $1,800
Used Chevrolet Silverado 1500
2,244 Great Deals out of 168,220 listings starting at $995
Used Ford Ranger
168 Great Deals out of 5,460 listings starting at $800
Used Toyota Tacoma
567 Great Deals out of 43,899 listings starting at $2,500
Used Ford F-250 Super Duty
314 Great Deals out of 45,013 listings starting at $1,700
Used Ford F-150 Heritage
163 listings starting at $3,660
Used Dodge Ram 1500
381 Great Deals out of 10,880 listings starting at $1,500
Used Ford Bronco
207 listings
Used Ford F-150 SVT Lightning
4 Great Deals out of 121 listings starting at $8,950
Used GMC Sierra 1500
993 Great Deals out of 66,786 listings starting at $2,495
Used Chevrolet C/K 1500
850 listings starting at $2,000
Used Ford E-150
130 listings starting at $2,995

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.