How to Test an Alternator - Plus How an Alternator Works

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  • čas přidán 6. 05. 2017
  • In this video I am going to show you how you can easily and conclusively diagnose issues and test your alternator. I will also take an alternator apart and show you what all the different parts like the rotor, stator, rectifier and voltage regulator work and how you can fix or replace them as well.
    Here are links to products which were used in this video:
    Battery Load Tester: amzn.to/2qcI5vr
    Battery Charger: amzn.to/2pSXDno
    Multimeter: amzn.to/2p8VtRj
    Aligator Clips: amzn.to/2pSPIWU
    Test Light: amzn.to/2pSLpLl
    Link to AlternatorMan's Channel: / alternatorman
    Please Consider Supporting My Channel at : / rnw
    Facebook: / ratchets2015
    Twitter: / ratchets15
    Instagram: / ratchetsandwrenches
    Disclaimer:
    Due to factors beyond the control of Ratchets and Wrenches, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. Ratchets and Wrenches assumes no liability for any property or personal damage that may arise from doing a repair on your vehicle after watching any of my repair video's. Due to factors beyond the control of Ratchets and Wrenches, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Again Any injury, damage or loss that may result from improper use of tools, equipment, or the information contained in this video is the sole responsibility of the user and not Ratchets and Wrenches.
  • Auta a dopravní prostředky

Komentáře • 677

  • @stupidPeopleRBored
    @stupidPeopleRBored Před 3 lety +91

    as a career tech, (power plant and semiconductor) you just don't get this kind of knowledge and communication from a technician very often. Fantastic video Ratchets and Wrenches! can't imagine where those dislikes came from

    • @I_HaVe_QuEsTiOnS4u
      @I_HaVe_QuEsTiOnS4u Před rokem +6

      Doesn't matter who you are or what you say there's always a troll that will disagree just to disagree.

    • @deanross4090
      @deanross4090 Před 6 měsíci +1

      Great explanation

    • @olivetree633
      @olivetree633 Před 3 měsíci

      Thank you for your input. Your video was very educational and you explained everything so clearly. I appreciate that you took the time to make this video and teach some of us how we trouble shoot alternator problems. Thanks again

  • @XEFairmont
    @XEFairmont Před 4 lety +188

    The best explanation of how a alternator and charge system ever. Easy no BS everyday explanation. Well done

  • @mikemarcott4888
    @mikemarcott4888 Před 3 lety +4

    Yes you have the best class I've ever seen on CZcams! 35 year diesel mechanic here

  • @heygreg123
    @heygreg123 Před 6 lety +130

    WOW! As a engineer, this is a superb tutorial for the layman / armature. Really NICE job!!

    • @michael-xe7rz
      @michael-xe7rz Před 4 lety +8

      Layman?! For anyone seeking wisdom without Attitude.

    • @RatKindler
      @RatKindler Před 3 lety +6

      @Bruce Lee If you feel inferior in the presence of an engineer then that's your problem - not his. You need to work on your self esteem issues.

    • @JoseCruz-qf6ui
      @JoseCruz-qf6ui Před 3 lety

      How did you become an engineer?

    • @MuhammadRafiq-is3fd
      @MuhammadRafiq-is3fd Před 3 lety

      Sometimes those technician will fix the problem that made by shitty enggineer🤭

    • @nathanbopp6163
      @nathanbopp6163 Před 2 lety +1

      @@michael-xe7rz armature and amateur sound similar, so armature was an acceptable attempt at a pun.

  • @mmc3051
    @mmc3051 Před 3 lety +6

    Most informative and precise auto repair video I have ever watched! Thank You!

  • @wyattoneable
    @wyattoneable Před 7 lety +35

    Your the best at explaining the subject at hand and backing that up with great editing!

  • @janshand7092
    @janshand7092 Před 4 lety +11

    Clearly Amazing .. I have watched so many videos on this .. Yours makes so much sense. I never once had to stop and rewind so I could listen again and again. ThankYou Crystal clear explanation!4

  • @richardtrowell8812
    @richardtrowell8812 Před 10 měsíci +2

    Excellent video on how alternators work, troubleshooting and testing. Know you have helped many people work on their own vehicle's. I am currently working on an older vehicle for my grandson. Many thanks.

  • @josephwash109
    @josephwash109 Před 6 lety +35

    The symbol you pointed out on the Ford diagram is actually a capacitor. It's there to absorb voltage spikes mainly to prevent radio interference and to keep the voltage output steady. This is an excellent video--very informative. Keep up the good work!

  • @billrimmer5596
    @billrimmer5596 Před 3 lety +11

    Super job! U covered all the bases. One tiny thing I might add is the one way clutch that a lot of new alternators have. A Honda Fit gave me a fit. It was slipping and not charging when heavily loaded. Sitting at idle I had 14 volts. When the fans kicked on, it wouldn't keep up. Once again, great teaching!!

    • @myviews469
      @myviews469 Před 8 měsíci

      could internal regulator be controlled by the computer on car? Because I replaced alternator and battery but from battery terminal i only get 12.5 if i try to disconnect the battery engine turns off.

  • @chintanpatel764
    @chintanpatel764 Před 5 lety +12

    I missed a lecture on this at school but your video helped me for the test I have tomorrow.
    Thank you.

  • @AlanLarkin5063
    @AlanLarkin5063 Před 2 lety +3

    Well Done!!!!!!! I’ve been working on my own vehicles for 40 years and I still learned a lot in this video.

  • @anthonyvolkman2338
    @anthonyvolkman2338 Před 4 lety +13

    I like the informative demonstration here! Ive worked with alts (inside them) for quite a while and this was great.

  • @ricardovelez2596
    @ricardovelez2596 Před 3 lety +7

    Great video and explanation of how an alternator works! Great job with the diagram and taking the alternator apart to show how all of the parts work together!

  • @markjriehle6798
    @markjriehle6798 Před 4 lety +5

    Excellent video: thorough and well communicated. Thanks for educating and helping so many people!

  • @hyper.technic
    @hyper.technic Před rokem +4

    2 Days from my 4th Year Heavy Duty Red seal Exam so brushing up on things - Great Video!!

  • @alghalebi
    @alghalebi Před 7 lety +31

    Many thanks for the explanation, clear and to the point as the other vids!

  • @hugoknight1
    @hugoknight1 Před 6 lety +1

    Best video I've seen so far on testing alternator/regulator/battery! You made it very easy to understand. Thanks!

  • @AMAG57
    @AMAG57 Před 9 měsíci +1

    I don't know if you'll see my comment or not, but I'd like to express my gratitude for your effort. The information provided was extremely helpful, and you delved into the subject in a detailed manner.
    Thank you for your hard work. The information was very beneficial, and you went into the topic in-depth.

  • @Whitewater767
    @Whitewater767 Před 5 lety +50

    Very thorough and understandable explanation, right down to the details such as where to set your multimeter dial, how the alternator and voltage regulator work, etc. I already knew a lot of this stuff, but your video is an excellent refresher. Plus, I gained quite a bit of knew knowledge from the details you presented. Having the disassembled alternator was an excellent teaching tool. And, the camera work was well done. Keep up the good work - I look forward to viewing more or your instructional videos! Thank you!

    • @scotforman1894
      @scotforman1894 Před rokem

      😅m😅mm😅😅mm😅me my omdear loo😅😅po😅😅

  • @billynoblett4880
    @billynoblett4880 Před rokem +1

    You are awesome. Man, I have been looking for a thorough explanation of how to troubleshoot my charging system, and this video is, by far, the best tutorial I have found. Thank you.

  • @marcoaaguilera2620
    @marcoaaguilera2620 Před 6 lety

    Not only you are a professional, but and excellent instructor, your Service Videos are about the best I have seen. Thanks . Marco.

  • @cornwasher
    @cornwasher Před 5 lety +2

    Wonderfully thorough video and answered my question about the two terminals on the back of the alternator. I knew one was + battery voltage to the stator and the other was to the gauge.

  • @jameswalker1210
    @jameswalker1210 Před 4 lety +7

    Great educational & informative video! Even my kids would understand this! You're an excellent teacher, well done!

  • @paulleech6412
    @paulleech6412 Před 4 lety +9

    Awesome video. Very informative. Extremely helpful. Great explanation of working your way throughout the entire charging cycle to make clear what makes it work. Before I could only say motor spins alternator which charges the battery. I know there are a lot of wiring diagrams out there. At least now, I actually can make sense of one too. Super neat knowing what I've learned right now. I'm in the process of installing a car stereo system with multiple amplifiers and batteries. I've seen other car audio youtubers show all the "where's" to make connections but leave out the "why's" or "how" it works. I just want to learn more now. Thank you so much brother.

  • @mikeoxlong1167
    @mikeoxlong1167 Před rokem +1

    Wow, I 49 years of life I never thought anyone could teach me this material, bro u did an amazing job of explaining this, thank u!

  • @TheBeemerfan
    @TheBeemerfan Před 6 lety +4

    Man!! that was the best video about alternators. You have a perfect clear knowledge about what you are talking about.
    nevertheless all other are very good as well.
    Thanks a lot

  • @shifter65
    @shifter65 Před 5 lety +5

    Wow, that was a really thorough explanation. Thank you!

  • @scottc3165
    @scottc3165 Před 2 lety +1

    Having issues with my dual battery 7.3 idi diesel charging system and I watched a ton of other videos that got me started but nothing worked and left me confused. Your explanation is much more complete and I now feel confident to give it another go tomorrow morning. Many thanks.

  • @rishardlampese8947
    @rishardlampese8947 Před 4 lety +1

    I feel so dumbed down from so many other ignorant and useless videos here on CZcams on this subject so that when I watched yours, it felt like too much information. My brain started to faze lol! This is a great video - finally someone on youtube with a comprehensive explanation about this. I actually learned something - excellent and thank you!

  • @ziaziaei5614
    @ziaziaei5614 Před 2 lety +1

    Simple, clear, concise ! The best as always. Thank you.

  • @djames3555
    @djames3555 Před 5 lety +3

    Brother thank you. I absolutely hate everything electrical and all the problems! 😠 Especially intermiting one's 😤!! You just explained and showed it perfectly, simple and made it nonintimidating. You are a mechanics Mechanics🔧🔩🚗. Thank you 👍

  • @ricardoandrade7925
    @ricardoandrade7925 Před 6 lety +21

    Congratulations for the amazing and very well explained video. Thank you very much!

  • @user-nz9wu5st2h
    @user-nz9wu5st2h Před 2 měsíci +1

    I am a professional repair shop and you are making a great video that has great explanations! Great video, this is super helpful for anyone who has questions about their vehicle's electrical system! nice!

    • @motologist1917
      @motologist1917 Před 2 měsíci

      brother i have ford fiesta mk6 1.4 tdci my problem is that whenever i start the car battery warning light comes on the dash but if i fully press the throttle all the way to 5k rpm it starts charging and light goes offf , plz help me to solve this issue . this problem started when i removed the battery

  • @billyr9840
    @billyr9840 Před 7 lety +80

    I have a very good understanding of how a alternator works but I must say you did a excellent job of explaining it's job and the inner workings of how it works for the average DIYer out there ! Nice !

    • @wyattoneable
      @wyattoneable Před 7 lety

      Hey Billy R, your everywhere!

    • @billyr9840
      @billyr9840 Před 7 lety +4

      You Too ! LOL ! No I only hang out on channels where the producer actually has a brain ! And you know as well as I do that someone out there has a better way of doing things and you can always learn something knew !!

    • @wyattoneable
      @wyattoneable Před 7 lety +5

      This channel is one of the best at explaining things too. See you around Billy!

    • @BryanChance
      @BryanChance Před 6 lety +4

      Yep..totally agree. I'm YCM certified (CZcams Certified Mechanic) because of the great videos on this channel. ;p

    • @Direktors
      @Direktors Před 5 lety

      wil my alternator work if one diode wire is disconnected?

  • @hpfax4
    @hpfax4 Před 5 lety +1

    Wow this is the most informative and best explained video on any topic I have ever seen. Thank you.

  • @louiemoscatel585
    @louiemoscatel585 Před 7 lety +3

    Great explanation here, I'll add this to my favs just in case. Thanks Bro!

  • @indikaprabash8084
    @indikaprabash8084 Před 6 lety +3

    Great work...well done......nice clear explained.
    Thank you very much
    Cheers from Denmark 🇩🇰

  • @websurfer1585
    @websurfer1585 Před 4 lety +2

    The best video I've seen on explaining this, thanks!

  • @murdoc4072
    @murdoc4072 Před rokem

    This is the best explanation I have seen on the internet. I just used your video to explain to my pre teens, as were experimenting with rebuilding an alternator.

  • @mackleblapppy4880
    @mackleblapppy4880 Před 3 lety

    The absolute best video on youtube by far. Thank you for taking the time to make this!

  • @Vasetousa
    @Vasetousa Před 4 lety +1

    Great stuff, no BS video. I am tired of other dudes, kwaking and waking all kind of BS before the actual tiny-miny information they provide. Keep it up man!!

  • @johnovegas
    @johnovegas Před 9 měsíci

    this is outstanding. you videos over the years have really become valuable to the driveway mechanic like me.

  • @tarikumedibew3507
    @tarikumedibew3507 Před 5 lety +3

    Amazing video and with a wonderful explanation! Good job!

  • @TheSonyjoseph
    @TheSonyjoseph Před 6 lety +3

    The best video, I ve ever seen.
    Many thanks

  • @johnkovar8064
    @johnkovar8064 Před 3 lety

    Extremely helpful, thankyou. So much better than anything else I came across on the internet.

  • @TheVwgolfmk1
    @TheVwgolfmk1 Před 4 lety +3

    Thank you for explaining this in a way I can understand, I am having issues with my electrical system and this video has helped me figure out exactly what is wrong. Many thanks again from Steve in the UK

    • @TheVwgolfmk1
      @TheVwgolfmk1 Před 3 lety

      @Bruce Lee it was the alternator, bought a reconditioned one and it's fine now.

  • @vishaldongare711
    @vishaldongare711 Před 5 lety

    Great explanation to a complicated product. I am subscribing to this channel for lifetime!!!

  • @sreenivasanm4303
    @sreenivasanm4303 Před 5 lety +1

    Thanks for explaining thoroughly about electrical system in automobiles.

  • @DanielOrtegoUSA
    @DanielOrtegoUSA Před 3 lety +3

    I was impressed with the amount of detail and graphics. Even so, I was hopeful that you would have talked about amperage as well. I just purchased a 270 amp alternator, and I would love to measure AMP's to ensure that it meets or comes close to the specification. You have a dog that demands that I give you a like/thumbs-up and subscribe!

  • @paulwharton1850
    @paulwharton1850 Před 4 lety +2

    So very clearly & well explained - Many thanks !

  • @eliaskennedy2992
    @eliaskennedy2992 Před 3 lety

    Hey, nobody ever explain this so good. Good Job Bro.

  • @hectorvega2163
    @hectorvega2163 Před měsícem

    Awesome explanation on how to test, diagnose, and fix a problem with the alternator. Excellent video and thanks 😊 👍

  • @1EagleDave
    @1EagleDave Před rokem +5

    Thanks brother your videos are always well done and explained in the best details to follow along with keep it up and thanks again for the(correct way ) on your repairs.🦅

  • @firstavengers3198
    @firstavengers3198 Před 4 lety

    This gentlemen give really the best explanation how things should be going on. Thank you and go bless you!

  • @axxeman2002
    @axxeman2002 Před 8 měsíci

    One of the best and most informative videos I have ever watched on YT. Very very good.

  • @ericc155
    @ericc155 Před rokem

    Best explanation I've heard so far. Easy to follow tests.

  • @pseudechis
    @pseudechis Před 6 lety +15

    That was a really excellent tutorial: very informative with no waffle. Thank you very much

    • @rattlerjake2362
      @rattlerjake2362 Před 5 lety +1

      It's actually refreshing to watch a video that explains the SUBJECT instead of wasting most of the video on worthless chatting. Instead of youtube purging political content they should remove videos that waste a lot of time blabbing and providing incomplete or incorrect info.. We really don't need 50 videos showing the same subject.

  • @IAR823DC
    @IAR823DC Před 6 lety

    Excellent overview with great detail on the operation and testing of an alternator!! Great Job

  • @celtic1song
    @celtic1song Před 3 lety +1

    Great video! Thorough explanation of how an alternator works and how to test. Thank you for sharing your knowledge and expertise! God bless!

  • @mark1952able
    @mark1952able Před 5 lety +10

    Excellent presentation! Much appreciated. You're a great teacher!

  • @dsadave
    @dsadave Před 2 lety +1

    You are a good teacher. Thank you for being thorough!

  • @stevenjernaginii7748
    @stevenjernaginii7748 Před rokem

    This was hands down one of the most informative videos I have ever seen...... 👍

  • @v.m.a.d.a
    @v.m.a.d.a Před 3 lety +1

    Best easy explanation on CZcams ✅

  • @AbdullahNaseerHayRee
    @AbdullahNaseerHayRee Před 4 lety

    Best explanation brother i have ever found yet with all tests explained simply and slowly. Thanks

  • @Poncho758
    @Poncho758 Před 3 lety +1

    Best video I’ve ever seen on testing thank you so much

  • @nickreedg22
    @nickreedg22 Před 3 lety

    dude you explain and show things very well thanks and it's rare I give a review

  • @Yipmanhands
    @Yipmanhands Před 4 lety +2

    Thanks for this mate, excellent work.

  • @jimpie231
    @jimpie231 Před 3 lety

    Excellent in depth video on alternators! Thank-You! Jim

  • @champ8899
    @champ8899 Před 3 lety +1

    What a grand explanation of an auto charging system!Thank you

  • @vincentborrowdale3093
    @vincentborrowdale3093 Před 4 lety +1

    BRO. YOU HAVE A GIFT . THANK YOU FOR BREAKING IT DOWN SO THE UNLEARNED CAN GET EDUCATED ,WOW , THANK YOU..

  • @Anonymous-it5jw
    @Anonymous-it5jw Před 4 lety +1

    Great explanation of this system. Thanks!

  • @khanhbuifamily
    @khanhbuifamily Před 6 lety +1

    The best video on this subject. Thanks

  • @ashgall8118
    @ashgall8118 Před 3 lety

    Excellent video. Very descriptive, makes testing an alternator very easy.

  • @W.Khairi
    @W.Khairi Před 6 lety +3

    Great Video Man, Thanks a lot.

  • @bossbasha1347
    @bossbasha1347 Před 5 lety +1

    Thank you very much for your clear and good explanation also the good tips and great camera works.

  • @WvMnts
    @WvMnts Před 2 měsíci

    Best demonstration I’ve seen. Thanks for sharing

  • @TargaWheels
    @TargaWheels Před 7 lety +1

    Good info, and clearly explained. Thanks.

  • @ericapplewhite714
    @ericapplewhite714 Před 4 lety

    Damn, you are a smart man! I've taken multiple physics classes and I still don't understand this electricity Bull. Thanks for breaking it down. I just got to re-watch 10 more times

  • @baburejaz
    @baburejaz Před 4 lety +2

    Excellent educational videos always. Thanks for your time efforts and research.

  • @migm7428
    @migm7428 Před 4 lety +1

    excellent! Best I've seen ever. Thank you.

  • @peterodriguez4642
    @peterodriguez4642 Před rokem

    Thanks for that easy & informative guide!

  • @xynyxs1
    @xynyxs1 Před 6 lety +1

    One of the best explanations. Thanks

  • @RenewTheRWandBlue
    @RenewTheRWandBlue Před 2 lety

    Your vid helped me determine that the new alternator I got was bad. Many thanks!

  • @grbeiz
    @grbeiz Před 3 lety

    Great Job explaining the different methods to test an alternator. Will definitely use this valuable info

  • @tacitusunum1668
    @tacitusunum1668 Před 3 lety

    There a lot repair videos on CZcams. A few are really good. This video is excellent!! Next level!

  • @jaileal8806
    @jaileal8806 Před 4 lety

    Thankyou for a fantastic video. Logical and clear. A real gem.

  • @I-Universe-369
    @I-Universe-369 Před 3 lety

    Nice breakdown!! Made me an expert instantly!

  • @kevinchdavid
    @kevinchdavid Před 4 lety

    Excellent explanation. Great job for the layman nothing like those other videos

  • @firstaparamythist2028
    @firstaparamythist2028 Před 2 lety

    The best and clearest explanation, thank you.

  • @SSingh-nr8qz
    @SSingh-nr8qz Před 4 lety +3

    THANK YOU! I was banging my head on this problem for a week, and then found your video!Very helpful!

  • @patches181
    @patches181 Před 8 měsíci

    Great job! Thanks for doing such a thorough explanation.

  • @HeAhaBro
    @HeAhaBro Před 6 lety +1

    Another great instructional video! Thanks heaps.

  • @CaliforniaBushman
    @CaliforniaBushman Před 3 lety

    So I've known my mechanical since 1993. But not my electrical. But I'm studying ohms law and now know what amps, volts and watts are. And ohms, parallel, series circuts and how to read them. I'm buying my first multimeter today. Just the cheap $6 Walmart one for starters. So I can measure all this stuff for fun! Loving electrical. I'm building my own 700 watt solar panel system for my van conversion. 3 Lithium Ion 100 amp hr batteries in paralell. With inverter, solar controller, charge controller, BMS, Isolater, etc. Can't wait to test my deep cycle marine and alternator first with my new multimeter!

  • @bkarmas
    @bkarmas Před 7 lety +2

    great info, I am now a subscriber. Thanks!

  • @ramalingeswararaobhavaraju5813

    Thanks to Ratchets And Wrenches for giving good information about alternator. Thanks for teaching in easy way.

  • @Chingonazo1
    @Chingonazo1 Před rokem

    Dude! Very good job teaching.

  • @a.k.9752
    @a.k.9752 Před 6 lety

    Extremely informative!!! Thank you!!

  • @robertspendlove7508
    @robertspendlove7508 Před 4 lety +2

    One more vote for this being the best charging system video out there.

  • @craigmalita9180
    @craigmalita9180 Před 2 měsíci

    Outstanding and easy to understand video, expertly presented. Thank you!