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How To Easily Check Alternator Diodes 

proclaimliberty2000
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Watch at proclaimliberty2000 how an alternator with normal voltage output can drain the battery on your vehicle. This video will save you a lot of time, money and a big headache.
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Under no circumstances will proclaimliberty2000 be responsible or liable in any way for any content, including but not limited to, any errors or omissions in the content, or for any loss or damage of any kind incurred as a result of any content communicated in this video, whether by proclaimliberty2000 or a third party. In no event shall proclaimliberty2000 be liable for any special, indirect or consequential damages or any damages whatsoever resulting from loss of use, data or profits arising out of or in connection with the availability, use or performance of any information communicated in this video. Due to factors beyond the control of proclaimliberty2000, it cannot guarantee against improper use or unauthorized modifications of this information. Proclaimliberty2000 assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. Proclaimliberty2000 recommends safe practices when performing any do it yourself repairs and or with tools seen or implied in this video. Due to factors beyond the control of proclaimliberty2000, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not proclaimliberty2000.

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30 сен 2024

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Комментарии : 38   
@chriss4365
@chriss4365 2 месяца назад
Mine reads 998 so I guess it's bad and it ruined the battery also. 😡 These batteries are robbery now around $200.
@not2late2game53
@not2late2game53 Год назад
Just when I was gettin' used to Red on Red and Black on Black ! ;-)
@proclaimliberty2000
@proclaimliberty2000 Год назад
👍😂
@NextLevelAutoDiagnostics
@NextLevelAutoDiagnostics 7 месяцев назад
Did you even check where you plugged the leads into your multimeter?
@TheHomy70
@TheHomy70 4 месяца назад
I dont understand why the black probe is plugged into the left portal of the multimeter. Is that correct?
@peterdostal7010
@peterdostal7010 Месяц назад
@@TheHomy70 because is black input
@pfoxhound
@pfoxhound Год назад
Your videos are very informative and short. Only necessary stuff! 👍👍👍👍👍
@banilara
@banilara Год назад
Very useful info
@howardpilot4590
@howardpilot4590 Год назад
Actually AC voltage to DC voltage
@chrisr.986
@chrisr.986 Год назад
My 2001 Toyota camry is at 11 volts. I changed my alternator with a new alternator and it's still at 11 volts with a load? In this particular alternator the voltage regulator is included in the Alternator. Kinda frustrating I cant figure out what wrong with it. Battery is good. Just for some reason its at 11 volts with a load. Any ideas sir? God bless 🙌 and may the one and only lord bless you.
@pfoxhound
@pfoxhound Год назад
If your alternator produces 11v, depending on milage of alternator - check brushes, voltage regulator, get a complete alternator, better go to mechanic or bring your alternator to AutoZone or similar store so that they could test your alternator. You need diagnostics, go to professional.
@chrisr.986
@chrisr.986 Год назад
@pfoxhound I did take alternator to autoparts store they tested it and said it was fine? That's what's weird?
@pfoxhound
@pfoxhound Год назад
@@chrisr.986 sometimes if they say it's ok - it will be ok. Depending on milage you may need a new one. When it's getting hot may act different. Buying cheapest - not an option. I saw 3 cheap starters installed one after another one. I connected my oscilloscope to car to see what's going on. Mine was dropping to 8V in some moments. Midas changed it to cheapest, changed me premium, in a week alternator started to act similar to original damaged one. After complaining they installed new original. Fixed. My friend had a bad tensioner and belt, his got temporary fixed. Now he has some minor problems with alternator, he changed his voltage regulator - fixed completely.
@chrisr.986
@chrisr.986 Год назад
@@pfoxhound TYVM sir
@pfoxhound
@pfoxhound Год назад
Nice!
@allywilkeforsenate
@allywilkeforsenate День назад
Most people usually replace the alternator me cause azzhole manufacturers and alternator shops wont sell them too you.
@Tgilbert03
@Tgilbert03 24 дня назад
I can't get a consistent reading...One minute it says 400-600, sometimes it says negative 900 🤷‍♂️
@mitchelllloyd974
@mitchelllloyd974 9 месяцев назад
Minor correction, the voltmeter, set in continuity setting, measures continuity in ohms resistance. A diode is a one way resistor to AC current. If you get the leads wrong as you pointed out, a diode has infinite resistance. In the correct orientation a diode will have something in the neighborhood of 450-500 ohms of resistance, a shorted diode will have very little resistance and an open diode will of course show very high resistance or infinite resistance. The important thing, and I thank you, is teaching me how to test my alternator easily. Good video, good instruction giving.
@jonrockwell1676
@jonrockwell1676 27 дней назад
While doing your test, my reading was 174 could this be causing tha drain to th battery? Thank You, Jon R.
@garyg9484
@garyg9484 Год назад
Luv your videos Godspeed.
@markaltosmith7871
@markaltosmith7871 10 месяцев назад
Thank you very much for this. I have a parasitic drain after the car is switched off, which drains the battery in 15mins, the volts drop from 12.6 to 7 volts . Then I disconnect the negative terminal & the volts return to about 11.5. I will follow your instruction to test the diodes. Best tutorial ever, thank you again.
@zio2485
@zio2485 27 дней назад
Great video, just what I was looking for...!✌
@electric8668
@electric8668 Год назад
Nice informative video.
@heavyjohnny
@heavyjohnny 5 месяцев назад
What will it read if it is bad?
@lmo1131
@lmo1131 2 месяца назад
Well, now we know what a 'good' diode-pack reading looks like. But what does a 'bad' diode-pack reading look like?
@chadmason8526
@chadmason8526 6 месяцев назад
First test does not isolate the alternator. A bad reading could be from anything in the car including the hood light being in the on position. Also this will not indicate an open diode only a shorted one. Shorted alternators are easily found with a standard amp draw test. Just disconnect the alternator and see if the draw goes away.
@likits1999
@likits1999 Год назад
Good afternoon my friend, My battery is in the back of the car with the negative cable disconnected. When I touch the negative probe to the alternator positive cable and bolt and the red probe to the alternator casing, the multimeter stays at 1. When I reverse the polarity with the probes, the multimeter still stays at one. This whole test wile the plug and cable are still connected to the alternator. Thanks in advance!!
@adriancordeiro3742
@adriancordeiro3742 9 месяцев назад
So I just did the first one to my 2001 Honda Accord and it read .316 so thats a bad one right ?
@RelaxingVibes202
@RelaxingVibes202 Месяц назад
Very informative video, thank you very much.
@eriksony6398
@eriksony6398 Год назад
Hi Paul, What car brand did you work with more? We want to send a good scan tool to you.
@JohannesC-c9k
@JohannesC-c9k 3 месяца назад
Diode failure = parasitic draw, interesting.
@alikhavari3352
@alikhavari3352 4 месяца назад
You are the best Good luck
@bltoth1955
@bltoth1955 Год назад
Mr. Paul, can you show us how to identify and replace the bad diodes? We live in a throw away society and this could help. Thx
@ahmadmohd1504
@ahmadmohd1504 Год назад
Correct
@SONSTHREESIXTY
@SONSTHREESIXTY 7 месяцев назад
The last test shouldn't have show a reading, which means the Diodes are allowing current to flow both ways & not one way as they should. So the last test means the Alternator is malfunctioning.
@tubeguy009
@tubeguy009 5 дней назад
That's what I thought.
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