Question about Ford F-150

1 Answer

Battery is going dead from an apparent short. how so I find a short curcuit

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.


    An expert that hasĀ over 10 points.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 5 Answers

First test the vehicle D.C. VOLTAGE follows ground. Remove negative cable attach clip part of 12 volt test light to good chassis ground and other end to neg battery post if it lights is bright as attaching the light to positive and negative cable you have a strong constant draw. have some one hold light or vise grip it and begin to pull fuses one at at time this will tell ya what circuit is involved if light goes out leave fuse out and re attach battery check vehicle to see what does not work. If haven't found anything you might need a wiring diagram. Hot tips check charging system voltage about 14 volts and load test battery...... Troy

Posted on Aug 01, 2008

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Central locking module

clean the ir sender on the remote,check for short curcuit in door wiring,or ignition switch is going bad(security module on ignition switch)

Apr 10, 2015 | 2008 Subaru Outback

1 Answer

Battery keeps going flat

Check alternator voltage output, might be low. obd2 scanner

Jun 12, 2013 | Cars & Trucks

1 Answer

Battery keeps going dead. Have had 3 new altanators & 1 new battery. 5 mechanics has worked on it over the last 12 mos.has cost quit a bit of $. but still same thing. Seems to go down when setting over...

Try disconnecting the battery after you park the car in the evening. If there is a short, then the battery should still be good in the morning. if not, the battery is no good. Most common sources of shorts are the alternator ,or the starter. Good luck You take a voltmeter and take a reading across the battery posts. There should be no power on in the vehicle at all...everything turned off and key in the off position. A normal reading may between 12 and 14 volts. Record this reading in a notebook. Now..go pull a fuse in the fuse box. Just one..and go back and take another reading at the voltmeter. Was there any change? No? Pull another fuse. Now you have two fuses out. Take another reading. At some point...that reading will change. It will show an increased reading. You have just found which circuit is causing the drain. With the drain removed the available battery voltage will go up. just follow the affected curcuit, until you find the drain. if alternator curcuit is ok!! then you should have at least 14.2-14.7 volts at battery when running with everything off. good-day ! and good-luck!

Sep 11, 2011 | Mercury Marquis Cars & Trucks

1 Answer

Dead short in park light curcuit how do i trace fault

How do you know you have a short?
Does a fuse blow continually?
Does it blow without any bulbs in all four sockets?
Does it blow with the light switch unplugged?

Just a place to start.
For me,I would have a complete wiring diagram and my VOM Meter out and study this for awhile. Think it out logically,not guess. Then test.

Aug 03, 2010 | 2000 Nissan Altima

1 Answer

Car won't start, dead battery.

You will need tools (a good multimeter) to figure it out if no apparent reason can be found. We call this a parasitic drain. Could be a relay stuck on to anything, even a bad computer.

Nov 02, 2009 | 1996 Pontiac Sunfire

1 Answer

Electrical Short???

Has the stereo been changed recently? If not move to the cigerett lighter. These two are most likely the prob. But you could have a bare wire anywhere grounding out. Good luck and hope you find it.

Jul 26, 2009 | 1996 BMW 318

1 Answer

97 Chevy Blazer - good battery, good alternator...still dies???

if you removed the dome lightbulb then there is no longer a draw from the battery there but if the ashtray light light does not go out then over a period the battery will go dead or drained to the point to not the vehicle

Mar 05, 2009 | 1997 Chevrolet Blazer

1 Answer

New battery dies in a day and a half

These type of problems are VERY hard to track down. I would start by putting a VOM meter (a small electronic meter to read voltage, amps or resistance) on the battery while the engine is running and the high beam lights are on. Take a reading from the + post of the battery. At this point it should read 13.8 volts or greater. I would also check for loose grounds. I would also take out all the fuses and see if your battery is dead the next morning. Then put the fuses back in one at a time and see if any spark or arc when you put them back in, that could be a sign of a draw on that curcuit. I would note that curcuit and then go and check that curcuit. These types of problems will cause you to loose your hair and your religion!

Much good luck and write back if any thing changes and I'll see if I can help again.

Dec 18, 2008 | 1997 Nissan Pickup

1 Answer

2003 Jag S-type-Blinking dash lights

The long story short it probably your battery being dead or a computer glitch (if there is nothing else apparently wrong with the car)
One is the battery life of an older model jaguar is going to be short compared to newer models. I noticed I have problems with my battery going dead around the 6 th year of the cars life since then a bunch of silly issues. One thing to know is if your car doesn't start it (even if your lights work) is that your battery is to low for the ignition to work (which requires high voltage). You can try removing the batter than re attaching it back to the car.
I have these issues typically when i don't drive for long periods of time in the winter (mostly). The car contains a big gigantic computer (which a lot of owners do nt realize) controlling everything weather you can start the car or not (it has a security system still armed) so when the computer is not working properly or the battery is too low (and their are no other apparent reasons). I would suggest trying a few suggestions on the jaguar forum because its very specific but you would be surprised how stupid the issues end up being. Flat bed a jagaur to any dealership and your already in the hole for 150 plus.
good luck

Sep 20, 2008 | 2003 Jaguar S-Type

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

263 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts


Level 3 Expert

61249 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers


Level 3 Expert

5331 Answers

Are you a Ford Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides