Battery drain on 6.9 diesel

Asked by Jun 28, 2014 at 10:01 AM about the 1984 Ford F-350 STD Crew Cab LB

Question type: Maintenance & Repair

We have a 1984 f350 6.9 diesel. If
she sits for a day she won't start. We
go through about 6 batteries a year.
They lose the ability to start the
truck. We have changed the
alternator and we disconnect the
positive terminals on both batteries
any time it will sit more than a couple
hours but it still loses battery charge
(11.7 and 11.6 this morning), enough
that we have to jump it. The current
batteries are about two months old
and when new have no problems
starting the truck.

1 Answer

122,755

www.youtube.com/watch?v=KF1gijj03_0 -- check this out for how to find a parasitic draw.

3 people found this helpful.

Your Answer:

Ford F-350 Experts

  • #1
    tennisshoes
    Reputation
    150
  • #2
    F_O_R
    Reputation
    140
  • #3
    BoholMark
    Reputation
    120
View All

Related Models For Sale

Used Ford F-250
396 listings starting at $4,995
Used Ford F-150
2,356 Great Deals out of 208,288 listings starting at $998
Used Ford Mustang
260 Great Deals out of 37,871 listings starting at $1,350

Used Cars For Sale

1994 Ford F-350 For Sale
15 listings starting at $8,999

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.