How to Test an Alternator ( Testing the Voltage Regulator, Diode rectifier and Stator)

Автокөліктер мен көлік құралдары

This video will cover the following
-------------------------------------------------------
How to test an alternator using multi meter
How to replace an alternator
How to diagnose alternator charging issues
Alternator ripple test
How to test a voltage regulator in an alternator
How to replace bearing in an alternator ( Alternator brush replacement )
how to test a rectifier in an alternator
How to test diodes pack in an alternator
How ecu controlled / computer controlled alternators work
How to test drive belts in a car
How to replace a decoupler pulley
Diagnosing no charge , undercharging , overcharging alternator with multimeter
How to fix a rattling alternator
How to test fuses and relays
How to test alternator duty cycle
How PWM ( pulse width modulation basics ) works
How to read waveforms
why your battery light is on
How to find a voltage drop
how to use a multimeter
How to find a overnight parasitic battery drain
How to repair an alternator and finally, Deciding on brand new vs remanufactured
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Пікірлер: 913

  • @JunkyDIYguy
    @JunkyDIYguy5 жыл бұрын

    Guys, check out my latest video kzread.info/dash/bejne/h3tpltqtZZnbitI.html

  • @tattedone6753

    @tattedone6753

    5 жыл бұрын

    I have a question about my vehicle do you have a email I can message you at?

  • @djeletropopstarify

    @djeletropopstarify

    4 жыл бұрын

    I have kind of dirty but perfectly working alternator, but it's kind of plug up with all kind of junk is there proper way to clean the alternator inside component's? and what it's proper way to do it

  • @azizmakka7126

    @azizmakka7126

    3 жыл бұрын

    Very helful vidios

  • @azizmakka7126

    @azizmakka7126

    3 жыл бұрын

    Sar. plese show me how to chek ulternet motor (capacitor) rely

  • @waziraliwazirali6095

    @waziraliwazirali6095

    3 жыл бұрын

    Hi

  • @davidbarlow269
    @davidbarlow2692 жыл бұрын

    I am an electrical engineer of some 40 years experience. Your presentation is excellent. Your English is very good. Your video skills are very good. I like the use of gloves , I like your camera skills. Top marks...

  • @gradyrm237
    @gradyrm2379 ай бұрын

    100% the best alternator video on the internet. This cat showed me how to test everything in the circuit. Testing the pins on the connectors was a massive help. I needed to know if the PCU was sending the signal to the alternator first of all. Taking the alternator apart is out of my wheel house. I just needed to pinpoint my defective part. This homie crushed it.

  • @BlackwaterDSM
    @BlackwaterDSM Жыл бұрын

    Hands down, one of the most informational and concise videos I’ve ever watched. The only way he could tell you more about an alternator is to show you how they wrap the copper up into a spool. Came here due to an overcharging alternator (first one OVERcharging in my 38 years of being a driveway mechanic) and was able to diagnose it thanks to this video. Thank you for such an awesome video!

  • @lukula2934

    @lukula2934

    11 ай бұрын

    Could not agree more. It goes to show how many YT "experts" only know enough to be dangerous.....

  • @BlackwaterDSM

    @BlackwaterDSM

    11 ай бұрын

    @@lukula2934 Right?! They help you out, alright…. Help you right i to the back of an Ambulance (or Hearse). 😬😬😬

  • @joeblow1711

    @joeblow1711

    6 ай бұрын

    I agree!

  • @konquer247
    @konquer2476 жыл бұрын

    It's people like that makes KZread a great source of information. Thank you for your efforts.

  • @arunadevi4734

    @arunadevi4734

    4 жыл бұрын

    You are Knowledge Hub. Great....

  • @lucianoferreira613
    @lucianoferreira6133 жыл бұрын

    My car stopped while driving. Thanks to two of your videos I diagnosed a bad connection between the positive terminal of the alternator and the battery ,gosh, I'm even speaking like a pro :) , I would like to give you a thumbs up for every euro you saved me. Thanks bro!

  • @d.d4184
    @d.d41842 жыл бұрын

    I am a technician,and this video very good with correct information. Not sure why anyone would give you a thumbs down.

  • @yyxx5088
    @yyxx50882 жыл бұрын

    your patience, dedication and keenness to detail is much appreciated

  • @jeremyyang7234
    @jeremyyang72344 жыл бұрын

    This is the most detailed instruction for testing alternator I have ever seen.Thanks a lot.

  • @bobczz3919
    @bobczz39194 жыл бұрын

    This is the BEST video I have seen on the charging system. I never buy a new alternator or starter. I always rebuild them for a few bucks. I will not pay 300 or more for a new alternator or starter. Thank you for such an informative video.

  • @elebeu
    @elebeu Жыл бұрын

    I especially appreciated the testing of the cables and ground for voltage drops. These are often overlooked and and multiple, small, voltage drops can add up to trouble.

  • @randyinchesapeake8129
    @randyinchesapeake81292 ай бұрын

    Now THIS; in my humble opinion, is what the internet was created for. To SHARE INFORMATION! (at one time called "the information superhighway") And this man did a damned good job of it!

  • @Etheo1ify
    @Etheo1ify Жыл бұрын

    The most detailed video on how to test, diagnose and repair an alternator. Thank you!

  • @TR4zest
    @TR4zest5 жыл бұрын

    I found myself pausing frequently to try to absorb all your excellent information. Wow. Thank you.

  • @Roudter
    @Roudter Жыл бұрын

    I like how you measure for voltage differences between the terminals and their endpoints - eliminating connection problems. It's a good method for any older vehicle.

  • @cheonglin1019
    @cheonglin10192 жыл бұрын

    The is the best and most comprehensive video on alternator testings and diagnosis

  • @seanys
    @seanys5 ай бұрын

    This is the only alternator video I’ve found on YT that covered what I actually needed know. Well done and thank you.

  • @a.bax.5992
    @a.bax.59924 жыл бұрын

    I've watched quite a few DIY videos on KZread and this is by far one of the most detailed and clear.

  • @danmaryam8201

    @danmaryam8201

    2 жыл бұрын

    Very educative

  • @CarAudioInc
    @CarAudioInc6 жыл бұрын

    the effort you put into these videos is phenomenal

  • @JunkyDIYguy

    @JunkyDIYguy

    6 жыл бұрын

    thanks buddy

  • @AlimKhan-xq7mc

    @AlimKhan-xq7mc

    5 жыл бұрын

    Air Field lighting system how to use CCR and MCR and check the transformer

  • @FranklinHicks-qs4gs

    @FranklinHicks-qs4gs

    5 жыл бұрын

    Increase your vocabanizzle

  • @azmyin
    @azmyin10 ай бұрын

    Sir, this was beyond GREAT! I followed the steps for checking a faulty alternator and found out that my friend's vehicle's alternator died due to running a 5+ year old battery

  • @rdyam
    @rdyam2 жыл бұрын

    I've got a wide range of interests that I look up tutorials for and there's a very good chance this is the best I've ever seen - thanks!

  • @nil4309
    @nil43094 жыл бұрын

    Definitely the best video on this! Not only explains what to test, but why - and exactly what each component should be doing. Thank you

  • @andysmith7758
    @andysmith77584 жыл бұрын

    This is a GREAT tutorial! Technically right on, and thorough demonstartions and explanations! You know your stuff, DIY Junky! Thank you so very much!

  • @minaflores1018
    @minaflores10185 жыл бұрын

    I just wanted to thank you for being so specific when explaining how to test and what to expect to see. This is the best video online. Trust me when I say I have watched and or read almost everything available online and not one comes close to being a thorough as you. I have been trying to figure out why my new alternator and new battery in my 2002 c320 still is not charging I found myself in an under information sh&% show. Thanks to you I have all the information needed, so that I can go back out to my car and have a good chance in figuring out my issue. Thank you so very much for your help. Keep up the amazing work. its really appreciated. :)

  • @JunkyDIYguy

    @JunkyDIYguy

    5 жыл бұрын

    thanks mina

  • @Decimusblack88

    @Decimusblack88

    8 ай бұрын

    Did you figure it out?

  • @RS-yj3gn
    @RS-yj3gn3 жыл бұрын

    This must be the best tutorial i have seen. Easy to follow and well illustrated. Thanks so much!

  • @HamzahVerster
    @HamzahVerster3 жыл бұрын

    The most informative video I've ever seen on KZread 👌🏼 Well done mate. Please continue making videos like this. I wish you all the best and good luck 🙏🏼

  • @robertculver3014
    @robertculver30145 жыл бұрын

    Excellent. Does not waste time on simple actions. Goes deeper than many such sites.

  • @humanresource9659
    @humanresource96592 жыл бұрын

    I know I'm basically repeating what another reviewer said but it popped in my head before I read their comment so I'm about to say it now: This is the most comprehensive review of an alternator I have ever seen Keep'em coming

  • @peterd.1165
    @peterd.11658 ай бұрын

    Your video is very professional and brilliant - I have a 1996 Volvo 940 fitted with a Denso alternator (100/14) - some time ago it started to make a whining noise. So far, I have replaced the bearings and drive belt - The Alternator is in outwardly good condition but the Whine persists. With the engine running, the whine is stopped when the large battery lead is disconnected from the alternator and resumes when the lead is reconnected. It has been suggested to me that the noise may be coming from the rectifier.

  • @jimnorrison8481
    @jimnorrison84815 жыл бұрын

    I just became an expert on automotive batteries and alternators.

  • @24pionu

    @24pionu

    4 жыл бұрын

    MzMa

  • @habsom1406
    @habsom14062 жыл бұрын

    Superbly explained video. Clearly a very knowledgeable individual who knows his alternators and automotive electrics. Thank you for making, editing and uploading this reference quality tutorial. 😎👍

  • @richardnolan9562
    @richardnolan95624 жыл бұрын

    Whoever narrated this did a way better job than the f****** school I went to dude you're awesome

  • @bobbyshaftoe
    @bobbyshaftoeАй бұрын

    So far [~20yrs] the best alternator vid on the t00bs

  • @jielsonlancenicolas5411
    @jielsonlancenicolas54116 жыл бұрын

    That was a clear explanation on what or how the the car alternator works. I appreciate this video so much!

  • @johnnymorris55
    @johnnymorris553 жыл бұрын

    An exceptional demonstration of automotive mechanical, electrical knowledge. Shared so others can learn and gain from your experience and hard work. I take my hat off to you friend. Well done.

  • @verylittlehouseonwheels5892
    @verylittlehouseonwheels58929 ай бұрын

    You did a good job man I'm just a guy that worked under a quad Master certified mechanic that love to teach. You hit on all of it. He made me a mechanic where most people want to be a mechanic. I never use a book only for torque specs now that I'm not a active mechanic tend to watch a KZread page for surprises that book won't tell you the surprise once in the job

  • @JaceD4V1S88
    @JaceD4V1S885 ай бұрын

    my alternator is on a 94 previa, recently the headlights, dash and dome light intermittently dim and brighten slowly like im flashing someone with my headlights but its very subtle but noticeable. been watching videos on how to replace some of this stuff myself as i cant buy a whole new alternator right now. very informative vid, thank you!

  • @andreasdrz1084
    @andreasdrz10846 жыл бұрын

    Information in detail, no bullshit... Really good, keep it up!

  • @autopilotone4
    @autopilotone45 жыл бұрын

    Thank you so much for an informative video. I have a parasitic drain and have pulled every single fuse in the car and it does not make any difference. Put a voltmeter switched to AC across the battery and wow, 29 Volts AC! That looks like a bad diode in the alternator!

  • @commando7707
    @commando77074 жыл бұрын

    I think my heart just grew two sizes larger to make room for Junky DIY guy.!!!!

  • @orleansadrianwhitakerarchb6422
    @orleansadrianwhitakerarchb64225 жыл бұрын

    I HAVE TO SAY THIS HAS BEEN THE BEST CAR TUTORIAL I HAVE SEEN

  • @niopress5162
    @niopress51625 жыл бұрын

    really appreciate the time and effort you put into making this video.your method of explanation makes it so easy to understand every detail.thank you so much.

  • @angelzlatanovski5215
    @angelzlatanovski52155 жыл бұрын

    You are an awesome man. Explained everything. Thank you, thank you, thank you Sir!

  • @Charliesvue
    @Charliesvue Жыл бұрын

    It is a long video however you put so much information in it and it’s very helpful

  • @amboyna66
    @amboyna662 жыл бұрын

    Very good - extremely useful. You speak so quickly, my slow brain takes a while to take it in and i have to pause the video!

  • @nothinghere2067
    @nothinghere20674 жыл бұрын

    A genuinely thorough and helpful video! Thank you!

  • @hruaitea_elemel
    @hruaitea_elemel4 жыл бұрын

    this is such a well made video.. exactly what i was looking for.. thank you for making amazing content

  • @fernandoaguayo9304
    @fernandoaguayo93045 ай бұрын

    Best alternator video on internet thank you 😮

  • @freestyleskyline
    @freestyleskyline4 жыл бұрын

    Amazing, clear, concise and informative. Love the video man!

  • @wrengouws3944
    @wrengouws39446 жыл бұрын

    Brilliantly laid out step by step explanations and visual points! My friend I have legitimately gone through hundreds of videos here on KZread and yours was by far thee best in this category! I'm going to be in here like swimwear and dive right into your other videos! Very well done mate!! And thank you for creating this channel!! 👌

  • @JunkyDIYguy

    @JunkyDIYguy

    6 жыл бұрын

    Thank you very much

  • @AnotherDebtSlave
    @AnotherDebtSlave Жыл бұрын

    Numbers for reference on AC leakage?? It's this kind of info that makes many subscribers. Thank you.

  • @jj-hb8cy
    @jj-hb8cy5 ай бұрын

    Best alternator video I've ever seen. Good job!

  • @janicesmyth2183
    @janicesmyth21835 жыл бұрын

    thank you for your great videos! I'm not a mechanic but learned quite a bit from your vids

  • @jessemerriman460
    @jessemerriman4605 жыл бұрын

    Thank you for taking the time to put this together!

  • @damienkubik1380
    @damienkubik13802 жыл бұрын

    Fantastic video, thank you. Very informative and easy to follow. Well put together, and thought out. Videos like this is what make KZread great.

  • @mikespain8655
    @mikespain86554 жыл бұрын

    This guy knows his stuff. Thanks, going to test voltage tomorrow on an old tractor with possible bad alternator.

  • @PJM454
    @PJM4545 жыл бұрын

    Best DIY video I've seen on KZread. Great job. Going to subscribe.

  • @mudassirnaseem6111
    @mudassirnaseem61116 жыл бұрын

    very nicely explained. i would like to add couple of things plz excuse me. while checking the rotor & stators also check their ground resistance. i.e their should be very high resistance between slip rings & its shaft, also between stator & alternator's body. thanks

  • @728b
    @728b4 жыл бұрын

    Wow! That was quite replete. I honestly didn’t know there was that much to know about an alternator. I’m certain to watch this several times to absorb all the information. Thanks.

  • @DonVTOL
    @DonVTOL5 жыл бұрын

    Best video on alternators I have seen yet!

  • @psuitt

    @psuitt

    5 жыл бұрын

    I totally agree! The Junky DIY guy explains alternators perfectly.

  • @royvilla5833

    @royvilla5833

    5 жыл бұрын

    Phillip Suitt I totally agree with you.

  • @claybourne7162
    @claybourne71623 жыл бұрын

    Outstanding!! Thank you for taking the time to make this very detailed video!

  • @mornebezuidenhout3003
    @mornebezuidenhout30032 жыл бұрын

    Best video on alternator testing yet! Exactly the information other videos don't include. Thanks

  • @Mr.Tiger.2013
    @Mr.Tiger.20134 жыл бұрын

    646 dislikes jealous of this great video. Thanks for making it. One comment: I wouldn't want to risk putting the meter there while the car is starting, the surge voltage could damage it.

  • @Norman92151
    @Norman921516 жыл бұрын

    Very well done mate.

  • @mgirano5822
    @mgirano58224 жыл бұрын

    A great thank you from France. You are very fast speaking but I can understand with the subtitles. Your video is quite complete and it helps me much in my problem with my Honda FR-V.

  • @kevinsmith8516
    @kevinsmith85165 жыл бұрын

    Excellent video, thorough and easy to understand explanation!

  • @jacobvance429
    @jacobvance4296 жыл бұрын

    Your videos are very well done. Thank you for the detail.

  • @baggz321
    @baggz3213 күн бұрын

    best video explaining alternators, thank you for sharing!!

  • @DONphantasmo
    @DONphantasmo2 жыл бұрын

    this is one of the best alternator diagnosis videos on KZread. Thank you!!!

  • @ricardoandrade7925
    @ricardoandrade79256 жыл бұрын

    You explain really good! Thank you!

  • @nia6849
    @nia68494 жыл бұрын

    Wow, best explanation ever straight to the point.

  • @SirHoppalot
    @SirHoppalot4 жыл бұрын

    One of the best DIY videos I've come across lately, nice job

  • @rivrevvmedia
    @rivrevvmedia4 жыл бұрын

    This is by far the best video on alternators I have seen! great job!

  • @maxxsmaxx1901
    @maxxsmaxx19016 жыл бұрын

    very precise demo and lecture . Thanks !

  • @kareno8634
    @kareno86344 жыл бұрын

    W0W! Talk about Testing to depths I never knew existed! Thanks! . . . _now > to test my brain for efficient 'holding power'_ = )

  • @amanwithhiscigaretteandcof3474
    @amanwithhiscigaretteandcof34745 жыл бұрын

    i'll subscribe.... and i sudenly expert about car alternator. my brain increase 50 HP just after watch your video. thanks dude...

  • @JunkyDIYguy

    @JunkyDIYguy

    5 жыл бұрын

    thanks man

  • @scottlanier5133
    @scottlanier51332 жыл бұрын

    My goodness one of the best instructional videos I've ever seen

  • @TonyPablo
    @TonyPablo5 жыл бұрын

    Everything you need to know about automotive charging systems, great video!!

  • @johnswilley6764
    @johnswilley67644 жыл бұрын

    Thank you Sir! Informative, succinct, articulate, and knowledgeable, also well produced video; without redundancy and unnecessary chatter. You are without a doubt among the best. I am now subscribed.

  • @Jez2008UK
    @Jez2008UK20 күн бұрын

    Oh man, this is the best. I've watched a ton and you sir are a master. Thank you!

  • @sherazkhan2120
    @sherazkhan21203 жыл бұрын

    Hats off to you my dude, your a beast by covering all angles! Much love

  • @CORZER0
    @CORZER03 жыл бұрын

    Wow, I remember when your channel was only 24k subs! You're gettin pretty big, congrats!

  • @JunkyDIYguy

    @JunkyDIYguy

    3 жыл бұрын

    Thanks corzero

  • @lasurvivor47
    @lasurvivor476 жыл бұрын

    Very educational. Thank you. Great video.

  • @davidedwards6319
    @davidedwards63192 ай бұрын

    Extremely clear explanations and advice. Thank you.

  • @carlosberrios2638
    @carlosberrios26384 жыл бұрын

    Wao!!!!!!! This is like the most awesome video I have seen on youtube. The amount and quality of information it contains is invaluable. Thanks

  • @swarfmonster3998
    @swarfmonster39986 жыл бұрын

    Great presentation, very informative. 5 star!!!

  • @marknaylor6550
    @marknaylor65505 жыл бұрын

    Very very good, best alternator class ive come across

  • @sakasmeed
    @sakasmeed3 жыл бұрын

    Very good presentation! So much information requires regular reviews, but its all there. Thank you!!

  • @luism.raposo5138
    @luism.raposo51383 жыл бұрын

    Wow! I'm a mechanic and you my friend are very good at this. Good job. I subscribed.

  • @QuanTruong7
    @QuanTruong77 жыл бұрын

    very informative as usual. almost 1k subs congrats in advance.. ;)

  • @JunkyDIYguy

    @JunkyDIYguy

    7 жыл бұрын

    Thanks buddy,,,

  • @cesaralexisvalenciamontano7861

    @cesaralexisvalenciamontano7861

    3 жыл бұрын

    Almost 1k dubs 3 years ago? And now, almost 200k! Nuts!!

  • @ajting3090
    @ajting30906 жыл бұрын

    You are a great teacher! Thank you. No hesitation here to subscribe. All the best to you!

  • @ClappaGlappa
    @ClappaGlappa Жыл бұрын

    Holy cow I learned so much! Excellent video! I never knew you could do individual component replacement of these but now I want to try some repairs on one I'm struggling with.

  • @wilsonk
    @wilsonk2 жыл бұрын

    Nice sharing my friend

  • @edgarsalinas6408
    @edgarsalinas64085 жыл бұрын

    good job , for sure one of the best videos outthere

  • @Aneurysm06
    @Aneurysm065 жыл бұрын

    Mate, you're a legend, cheers

  • @TAQEDAR
    @TAQEDAR3 жыл бұрын

    Thank you for your very helpful video. I know a lot about electric and electronics, but still I learned many things here about auto alternators. Thanks again!

  • @godfreylubega795
    @godfreylubega7953 жыл бұрын

    I keep watching this video and every time l pick a point. thanks, dude you are a genius,

  • @huanweili7699
    @huanweili76995 жыл бұрын

    I learned more information on here than in my Automotive class. Lol 👍👍👍👍

  • @wbudd
    @wbudd6 жыл бұрын

    Wow, this was informative. Thank you and I'll be checking out your other videos! (:

  • @JunkyDIYguy

    @JunkyDIYguy

    6 жыл бұрын

    ha haa thanks,

  • @rossbrumby1957
    @rossbrumby19572 жыл бұрын

    Thanks, that shed some light. Looks like an obd2 reader will be helping first on the lancer's overcharging in case it's the computer's fault.

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