Electrical Problem

Asked by Mar 10, 2015 at 12:18 PM about the 2002 Ford F-150 XLT Crew Cab 4WD SB

Question type: Maintenance & Repair

I currently replaced the alt. and when I tried to start it, didn't start. I jump started and it turned on. Then when I took the cables off the truck would stay on for about 30 sec. and then shut down. I jumped it again and started and the same thing happened. What can it be?

2 Answers

86,545

Ok first of all never unhook the battery with the engine running, on today's vehicles, you can cause a voltage spike and fry electrical systems. A customer of mine did that on his Ford Crown Vic and after it was all fixed and running the total repair was 1800 bucks. So that being said, get the battery recharged and tested then start looking for a fried main fuse in the power distribution box, if nothing is found there then check the wiring for the alternator, it is possible that one is broken and that will not allow the alternator to energize. This of course is assuming that the alternator is good and not allowing a feedback through thus killing the battery. Hopefully there is no damage caused by the battery disconnect.

1 out of 1 people think this is helpful.
16,560

Question tennisshoes: When you speak of unhooking the battery while the engine running, do you mean the assisting vehicle or the vehicle being jumped?

Your Answer

Add photo

Related Questions

  • Electrical Problem? 1 answer

    Air was working and so was my Heater, all of a sudden , air stopped working, heater, reverse lights and power locks(power locks are to engage when I put the truck in gear)anyway I've checked the fuses...

    1998 Ford F-150 XLT Extended Cab Stepside SB

    -

    Maintenance & Repair

  • 4.9L EFI Electrical Problems 11 answers

    Can't get it to idle smoothly or run without bucking. Replaced plugs, wires, distributor, coil, - basically everything but the wiring harness. Fuel isn't the problem, fuel pressure in the rail is wi...

    1988 Ford F-150

    -

    Maintenance & Repair

  • Electrical loss 1 answer

    Lost all my electrical in the cab no head lights, instruments,brake lights nothing works.battery is charged new alternator new starter new harness for batt/starter. .both fuse boxes and fuses are ...

    1998 Ford F-150 XLT 4WD LB

    -

    Maintenance & Repair

  • what causes electrical problems inside of a 2001 ford f150 2 answers

    2001 Ford F-150 XLT Extended Cab 4WD SB

    -

    Maintenance & Repair

  • Electrical problems 2 answers

    my truck started yesterday as normal then died while backing out of carport now I have no power at the ignition switch. Cigarette lighter, aux power supply and inside lights stillwork. No emergenc...

    2011 Ford F-150 XLT SuperCab

    -

    General

Search Ford F-150 Questions

Ford F-150 Experts

#1 OJ
OJ
Reputation 6,900
#2 dandyoun
dandyoun
Reputation 4,180
#3 tennisshoes
tennisshoes
Reputation 2,510
View All

Related Models For Sale

Used Chevrolet Silverado 1500
2,307 Great Deals out of 156,238 listings starting at $1,395
Used GMC Sierra 1500
931 Great Deals out of 62,271 listings starting at $1,395
Used Dodge Ram 1500
535 Great Deals out of 12,998 listings starting at $2,199
Used Ford F-250 Super Duty
427 Great Deals out of 45,049 listings starting at $2,000
Used Toyota Tundra
626 Great Deals out of 30,696 listings starting at $2,637
Used Toyota Tacoma
627 Great Deals out of 35,082 listings starting at $2,155
Used Ford Mustang
399 Great Deals out of 44,403 listings starting at $1,000
Used Ford Explorer
1,006 Great Deals out of 73,800 listings starting at $750
Used Chevrolet Tahoe
809 Great Deals out of 28,674 listings starting at $1,500
Used Ford Ranger
209 Great Deals out of 6,719 listings starting at $1,450
Used Jeep Wrangler
442 Great Deals out of 19,188 listings starting at $2,994

Used Cars For Sale

2017 Ford F-150 For Sale
3 Great Deals out of 100,942 listings starting at $18,940
2016 Ford F-150 For Sale
196 Great Deals out of 43,534 listings starting at $16,995
2015 Ford F-150 For Sale
200 Great Deals out of 7,337 listings starting at $17,480
2014 Ford F-150 For Sale
465 Great Deals out of 11,869 listings starting at $10,700