Learn how to test your car's starting and charging system. Go to www.autozone.com/autozone/electrical/rotating-electrical-systems.jsp to learn more about your starting and charging system.

Get everything you need to do the job right at www.autozone.com


    • Naveen Gujjar
      Naveen Gujjar


      about 10 days ago
    • Joshua Knight
      Joshua Knight

      I’ve been having problems with my Ford F-150 not sure where the problem lies at. It will start up just fine but will idle heavy if I let it sit it acts like it wants to die out, if I put my foot on the accelerator pedal it will automatically die out. All fluids are good including oil. All interior/ exterior lights work. I even tried a theory to jumpstart my battery but no change. Any suggestions would greatly help! I don’t know a lot about vehicles

      about 18 days ago
    • Vanessa Strouse
      Vanessa Strouse

      I was impressed by this video. He helped me find my problem in my expedition. Gave simple instructions on how to go about it.

      about 1 month ago
    • AutoZone
      AutoZone In reply to Vanessa Strouse

      Glad to hear it helped. Happy driving, Vanessa!

      about 1 month ago
    • junie santiago
      junie santiago

      I start the key in it won’t turn on but the lights come on

      about 1 month ago
    • junie santiago
      junie santiago

      My truck trun off on its own and it won’t start

      about 1 month ago
    • Andrew Atkinson
      Andrew Atkinson

      This gus helpfull reminds me of hank hill ha jp

      about 1 month ago
    • David B
      David B

      Hello mate, I see 14.7V directly from alternator but 13.4V at battery on idle. When I connect + of multimeter to + of battery and - of multimeter to the + bracket of alternator I see -1.5V which confirms the appr. diff between 14.7 and 13.4. Where is the problem? I sandpapered all terminals. And the + cable harness loom between alternator and battery is quite well isolated and very hard to reach as it passes between exhaust manifold and engine. Your help will be appreaciated.

      about 2 months ago
    • francisco romero
      francisco romero

      You never showed,,,what is or where goin the charger system ..?

      about 2 months ago
    • Frank Gary
      Frank Gary

      Never show how check chargers system
      Jajajaj aja
      Only parts

      about 2 months ago
    • Roth Henderson
      Roth Henderson

      My Ford does this every 3 months I'm starting to think it's a wiring issue🤔 I might just scrap it instead

      about 3 months ago
    • @ngel0fdeath
      @ngel0fdeath In reply to Roth Henderson

      Roth Henderson same my ford explorer gives me a lot of problems with the charging system

      about 2 months ago
    • Stephen Clark
      Stephen Clark

      This would be an awesome f****** video if my alternator I've gotten from AutoZone wasn't a complete piece of s*** to wear on the lifetime warranty have gotten seven f****** alternators in less than 3 years

      about 4 months ago
    • Joshua Wheeler
      Joshua Wheeler In reply to Stephen Clark

      Might be something else killing them

      about 2 months ago
    • Don Strickland
      Don Strickland

      Why dont u come to my house then and prove it, you are suspicious

      about 4 months ago
    • Anei Yuot
      Anei Yuot

      I love your video. Professional explanation. Thanks

      about 5 months ago
    • Womb Raider
      Womb Raider

      Very fitting that they use a Chevy for this video. Owning a GM product will force you to become a decent mechanic, unless you like paying out the rear to mechanics to fix all the problems you'll have.

      about 6 months ago
    • Be happy
      Be happy

      Wonderfull mr thx a lots.......

      about 7 months ago
    • Qiana Simmons
      Qiana Simmons

      Thank you so much this has helped me out a lot my car is making that noise so now I know it's my battery God bless you

      about 7 months ago
    • Chazz Ram
      Chazz Ram

      I only get my parts from auto zone and no place else the quality of the parts for me have always been above the rest..also like that warranty very important auto zone is the best in the business...those duralast parts are unmatched they really do LAST...

      about 7 months ago
    • Troy Slyker
      Troy Slyker

      All of my lighting (headlights, tale lights, dash lights, radio etc) pulse or flicker when the vehicle is running. I read somewhere that that is a dirty alternator? Anyone know what causes it?

      about 8 months ago
    • jun libera
      jun libera

      Thank you sir it's really helpful

      about 8 months ago
    • Javid Khan
      Javid Khan

      nice information sar

      about 8 months ago
    • ترند الشرق - Alsharq Trend
      ترند الشرق - Alsharq Trend

      please , my car have a problem wich is shown by computer examination .. Engine emmobiliser system .. .. what is this mean please could you help me

      about 9 months ago

      Finally a professional clear explanation of vehicular maintenance

      about 9 months ago

      Why did you take off your glasses right back off

      about 9 months ago
    • Eric Martinez
      Eric Martinez

      So if power steering fluid got into a component like the alternator can it be cleaned out???

      about 10 months ago
    • Dungeons Dragons
      Dungeons Dragons

      I try to start my car but it makes a buzzing noise

      about 10 months ago
    • Virginia Cole
      Virginia Cole

      I on now and I have a good feeling about things that I need to do to get the kids together p I love u and I'm sorry pretty good

      about 10 months ago
    • jtp1389
      jtp1389 In reply to Virginia Cole

      When the clueless use the internet..

      about 7 months ago
    • akui88

      this video was very helpful, thank you AutoZone!

      about 10 months ago
    • abdullah muhammd
      abdullah muhammd


      about 10 months ago
    • BeardedVeteran

      If theres any Car enthusiast or experts this Veteran needs some help!

      OK guys....1994 Ford Ranger 3.0 XLT Regular cab long bed 

      I recently replaced the water pump on this truck. Now my Alternator isn't charging the battery. These two connectors are hanging down on the driver's side. I checked nearby the battery,power distribution box ,solenoid, starter,firewall and fender. I cannot find anything or anywhere for these two plugs coming from the main power source wiring harness from the Alternator. Where do they go?

      Here is a link with photos

      about 11 months ago
    • Kbat
      Kbat In reply to BeardedVeteran

      Sounds like an inline fuse but those are usually placed closer between the battery and alternator and or the starter

      about 2 months ago
    • Suresh Vadgama
      Suresh Vadgama In reply to BeardedVeteran

      Zachary Ray how stone hearted man you are I wonder

      about 9 months ago
    • Zachary Ray
      Zachary Ray In reply to BeardedVeteran

      MaskedDemon guaranteed 1 time fix all for any Ford vehicles. Okay turn key release brakes start if possible them promptly drive it into a river or large body of water and there you go problems solved

      about 9 months ago
    • Geechee Woe
      Geechee Woe

      What a great video Thanks!

      about 11 months ago