Battery draining

Asked by Feb 20, 2016 at 10:06 AM about the 1986 Ford F-150 STD Standard Cab LB

Question type: Maintenance & Repair

Hey guys, I took my truck to pepboys and
they fixed the cables running to the
alternator (apparently they were wired
incorrectly)  for a couple weeks my truck
worked perfect. All of a sudden as I'm
putting my truck in reverse it dies. So I try
to jump start it. And it immediately tries to
fire up when the keys aren't even in the
ignition. I changed the relay for the starter
and it still happens. What should I do for
that and also for the draining battery?

4 Answers

107,575

Check your sylonoid? Also double check their wiring. Something may have come loose or shorted out

I just replaced the solenoid. I'll do that.

6,255

Check voltage at the small wire on the solenoid when this happens, if there's voltage when key is off, check it at ignition switch with wire disconnected, if there's voltage at the switch with key iff, replace switch. If no voltage at switch but voltage on solenoid wire, there's a short on that wire, trace and replace wire

17,190

If your vehicle tries to start (turn over) without the key in it and in the off position, there is definitely a short somewhere. Since the problem in intermittent it will be difficult to locate. You will probably have to visually check each wire within the starting ignition circuit for damage to locate the fault.

Your Answer

Add photo

Related Questions

  • Battery Light ON... Drains while running 2 answers

    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 ...

    2001 Ford F-150 XLT Extended Cab LB

    -

    Maintenance & Repair

  • battery drain over night 1 answer

    1999 Ford F-150 Lariat 4WD Extended Cab LB

    -

    Maintenance & Repair

  • Why is the battery draining? 1 answer

    I have replaced the battery, alternator, fuses.

    1997 Ford F-150 Lariat 4WD Extended Cab LB

    -

    Maintenance & Repair

  • what is causing battery to drain? 3 answers

    Truck would not start ..jumped it w/my car…started fine…the battery in my truck is new.I let it charge off of the car 20 min. Every thing seemed fine..no warning lights..idled great..tranny went int...

    1994 Ford F-150 XLT LB

    -

    Maintenance & Repair

  • Battery draining 2 answers

    Battery drains when in drive and you are slowing down it doesn't drain in park.

    1988 Ford Bronco XLT 4WD

    -

    Maintenance & Repair

F-150

Looking for a Used F-150 in your area?

CarGurus has 210,091 nationwide F-150 listings starting at $895.

ZIP:

Search Ford F-150 Questions

Ford F-150 Experts

#1 OJ
OJ
Reputation 7,210
#2 dandyoun
dandyoun
Reputation 4,260
#3 tennisshoes
tennisshoes
Reputation 2,590
View All

Related Models For Sale

Used Ford F-250
488 listings starting at $3,975
Used Ford Mustang
319 Great Deals out of 45,693 listings starting at $2,000
Used Ford Ranger
178 Great Deals out of 6,233 listings starting at $1,300

Used Cars For Sale

2017 Ford F-150 For Sale
3 Great Deals out of 116,884 listings starting at $18,299
2016 Ford F-150 For Sale
150 Great Deals out of 29,271 listings starting at $17,877
2015 Ford F-150 For Sale
195 Great Deals out of 7,290 listings starting at $11,600
2014 Ford F-150 For Sale
452 Great Deals out of 12,407 listings starting at $9,995