Thank you! Finally a video that gets to the point and doesn’t drag on 😂😂

@Motorcarnut

7 ай бұрын

Thank you! Glad you liked it!

Thanks for getting right to the point. Turns out the whining I heard was just my wife, alternator was just fine

@Steven-te5xe

5 ай бұрын

Lol

@Motorcarnut

5 ай бұрын

Lol

@littlebigman5792

3 ай бұрын

Lol

@BoltersBolts

3 ай бұрын

Lol

@carlpoole3161

3 ай бұрын

😂😂😂

this? I like this. no messing around, straight to the point

@Motorcarnut

6 ай бұрын

Thank you! Appreciated

Thanks man js gave me more info and straight to the point love it

@Motorcarnut

9 ай бұрын

Sure, no problem! Thanks for the response

Bro my alternator screams like a supercharger and it’s been working just fine for me

@Motorcarnut

Жыл бұрын

That’s not good, should replace it before it fails.

@wxxregta8388

Жыл бұрын

@@Motorcarnut probably but I’m not going to😂

@CommanderRich

11 ай бұрын

@@wxxregta8388don’t wanna end up like me and it drains the battery and you can’t even unlock your truck 😂

@skinnysizmygame

10 ай бұрын

That means your alternator got bad bearing screaming like a hellcat

@eerqv

10 ай бұрын

@@CommanderRichI have a Infiniti coupe and my windows won’t go down enough to close the door

My alternator was doing all sorts of crazy things, random electrical gremlins, then there was a high pitched whine through the stereo speakers, instrument cluster lights would all pop on while driving, then go off, gauges would flip out then go back to normal, stereo would shut off and come back on and shut off and come back on, the air bag light would randomly dimly be visible.....The voltage meter in the truck would fluctuate, then the "battery light" flashed on and off a couple times and I was getting no charge, so I checked the charging system and got a no charge result, which confirmed the alternator finally completely gave out. So I got a new alternator and a new battery and put them in and Voila! Everything is great. Also, when I pulled the alternator out, spinning the pulley on the front of the alternator it was making some loud squeaking sounds 🤔 I'm actually glad it was just the alternator, I was thinking it could also be a bad ignition switch but everything is great now.

@Motorcarnut

Ай бұрын

Good the hear that great that it helped!

@mymusic3354

Ай бұрын

@@Motorcarnut Yeah the vehicle was doing a lot of strange things and I wasn't sure what was going on, turned out the alternator was causing everything, so I replaced it, everything works fine now. I also put in a new battery to go with the alternator so everything is new, when out of the vehicle the pulley squeaked pretty loud, it was pretty old and finally got around to changing it, there also was a smell that almost made me think oil leak but that was the alternator too apparently, because there is no oil leaking and the smell is gone. I checked everything else under the hood before zeroing in on the alternator, couldn't figure out why it smelled like an oil leak when nothing was leaking, I didn't know it could be the alternator, sure enough it was. 😂

@dkt1976dt

Ай бұрын

I had the same issues on my car, it was the wiring from the ignition switch going to the alternator. The alternator wasn't getting power or getting sporadic power causing all sorts of electrical issues with my car.

@mymusic3354

Ай бұрын

@@dkt1976dt Yeah, I spent time checking all the wiring and grounds, fuses, fusable links and relays first, resistance checks on the wiring, checking all connections first because the alternator wasn't making noise and I knew it was possibly a wiring issue somewhere, didn't cost me anything to check all that stuff first, but everything checked out and it was narrowed down to the alternator which only took a few minutes to swap in a new one, put in a new battery at the same time....I was actually relieved to find the wiring and everything else checked out, since a lot of the wiring and grounds wrap around and wind through spots where a person would have to remove a lot of parts to get the old wiring out and the new wiring in. I definitely checked all the wiring though (initially suspected that could be the issue and wanted to rule it out first) The alternator was going out and eventually died completely, it was pretty old though so it wasn't surprising that it eventually went out, it was a really simple replacement which is always nice 😁

@Motorcarnut

Ай бұрын

@dkt1976dt sure that would do it for sure.

Informative video, straight to the point. Refreshing. I subscribed

@Motorcarnut

Ай бұрын

Thank you for the sub and comment!

Sometimes the alternator is fine and it just needs the decoupling pulley replaced. That's what happened to my 15 journey

@Motorcarnut

3 ай бұрын

That's kinda rare but yes that can happen. Thanks for the feedback!

Even easier, Check the voltage at the battery terminals, before you start it, should read 12.5 volts or slightly more. Then start it and check voltage again, at the battery terminals, with all accessories off, should read at least 1.5 to 2 volts higher (or slightly more) than the voltage before you started it.

@Motorcarnut

8 күн бұрын

Correct!

My car had screaming sound. A mechanic said is was the ac compressor but i disagree. It wouldn’t start anymore after awhile, i replaced the battery then the car started for like five minutes now it won’t jump start without blowing ignition fuses. Can all that be from the alternator ?

@Motorcarnut

13 күн бұрын

Starter, or alternator yes.

Literally just changed mine last week

Thanks my man . Great stuff . Nice accent too.

@Motorcarnut

2 ай бұрын

Glad you enjoyed it! Appreciated!

What if I shake the alternator while I'm holding it, and it kinda rattles?

@Motorcarnut

Жыл бұрын

I would say something is wrong with it and would get a new one.

@bruceli9094

10 ай бұрын

Could be gold nugget you accident picked up driving

@dkt1976dt

Ай бұрын

Sounds like the bearings are gone.

Going through alternator stuff right now, my friend had a digital tool that isolated that it is the alternator not working correctly but I kind of figured it was the alternator, stalling out, dimming lights, stalling. Brand new alternator ordered, have it in a few days

@Motorcarnut

5 ай бұрын

Should fix you problem

@KO-rg6zl

Ай бұрын

@@Motorcarnut kzread.info/dash/bejne/mHl6qLiDd7ybgrA.htmlsi=s6G2denEDl3d9lip

How do you get voltage when you put your ohm meter on it? That's crazy talk

@Motorcarnut

8 ай бұрын

I said it wrong, sorry

@KO-rg6zl

Ай бұрын

kzread.infoh0msQeOeQYc?si=5TFaNgQFiq2FFaxA 👍Part 2 Amazing to 1 of the Best of the Best 💯💯💯

I heard in a video about car care and repairs that you can also check it out to see if it is good or bad by sticking a screwdriver to the back of it to check if it will magnetically stick to it and if it does stick than it's good if not than change it out....

@Motorcarnut

8 ай бұрын

That doesn’t say much about the output of the alternator.

It's been whining and lights flickering in my car if it finally went completely out will my car not start at all

Thank you for the ℹ️

@Motorcarnut

7 ай бұрын

No problem!

mine makes noise when it wants to, had it tested and everything seems fine. no other symptoms, sometimes is smells burny sometimes it doesn't. i have a reman ready for when it goes bad lol

@Motorcarnut

10 ай бұрын

I’d replace it before going far with the vehicle.

@a.kblur04

10 ай бұрын

@Motorcarnut was going to yesterday but then i pulled the cap off the pulley and cleaned the pulley out, now it's silent and it passed a voltage test with flying colors so idk

@Motorcarnut

10 ай бұрын

@a.kblur04 ok, so not yet, good saved money

@guesswhomartin9249

8 ай бұрын

Yeah, that was the same thing I had with my alternator, I replaced it anyway. I didn't want to take that chance.

@Motorcarnut

8 ай бұрын

Alway good assurance.

Thanks boss

@Motorcarnut

2 ай бұрын

Sure, no problem!

Other than that, thanks for the tips

@Motorcarnut

4 ай бұрын

Thank you!

Unless it’s a one wire you’d need to check the exciter wire for battery voltage

@Motorcarnut

Жыл бұрын

Good tip!

@relaxingambientsounds7365

11 ай бұрын

Where is the exiciter wire

@LJT9393

9 ай бұрын

@@relaxingambientsounds7365check your pants

Yep, mine's bad Thanks 👍

@Motorcarnut

5 ай бұрын

Sure, no problem!

Mine was whining, I had just done my belts. I think I tightened it up too tight. I loosened it up not too long ago now I hear it ticking sound, and I just experienced a bad alternator car stalled out no power juiced up the battery dim lights gave me a couple check, engine lights, including speed sensor, it just tripped out the whole system

@Motorcarnut

5 ай бұрын

Yep, people don't realize its the alternator that keeps the car running, not the battery. The battery is only to start the car.

Do you do this when it’s on?

@Motorcarnut

Ай бұрын

Yes with the car running and a volt meter not ohm like I said that was incorrect

At Auto zone they tell you for free when is bad so go to auto zone or Auto parts and is easy and quick

@Motorcarnut

3 ай бұрын

Sometimes the vehicle won't start or run enough to make it to an auto parts store and sometimes people want to learn themselves as well.

What do you mean by whinning? Cause when my acura is on, i can hear a whinning noise and i thought it was a pulley or a belt rhat was dry and needed lubricant

@Motorcarnut

Ай бұрын

Usually that’s a telltale sign the alternator is on its way out. But spray the belt with belt dressing and see it the noise goes away.

My alternator is covered in oil from and oil leak. It's black. Will that eventually kill it? the leak has been fixed.

@Motorcarnut

Жыл бұрын

Yes, liquid and electrical don’t mix. It you have access to an air compressor you can try to spray it with electrical cleaner and compressed air, make sure you disconnect the negative battery terminal Before you clean it.

@TheHilariousGoldenChariot

9 ай бұрын

No oil does not conduct electricity and the additives in the oil are very minor so they should no be enough to create some sort of short.

@JoshSmith-wo7zw

8 ай бұрын

​@@TheHilariousGoldenChariotWrong oil attracts dirt and dust which causes overheating of the windings in the alternator.

@TheHilariousGoldenChariot

8 ай бұрын

@@JoshSmith-wo7zw that is good point

@JoshSmith-wo7zw

8 ай бұрын

Oil will attract dirt and dust causing the windings in the alternator to overheat. There's a good reason for the grooves in the case exposing the windings. There for heat dissapation. Dirt and dust act like an insulator. I/E prevent heat from.dissapating.

What if I use my volt meter to check the voltage ? Or should I use the Ohm meter still ?

@Motorcarnut

5 ай бұрын

Sorry I meant a multi meter which does both

Can I test using the volt meter if the car is currently hooked up with another car so the bad car is starting ?

@Motorcarnut

9 ай бұрын

No, that will be inaccurate.

My accord says it has overvoltage that’s what my obd scanner is saying is the only issue, I did put in the v6 battery of the same model but mines the 4 cylinder, I’ve seen people do the swap and be fine but my alternator says overcharge at 14.7 volts

@Motorcarnut

9 ай бұрын

It's not the battery. Probably a bad voltage regulator inside the alternator. Should replace the alterator asap unless the voltage regulator is replaceable by itself. It will destroy the new battery you put in.

welp, guess i need a new alternator

My alternator sounds like it’s scratching a chalkboard. I bought a replacement just in case. Thoughts?

@Motorcarnut

8 ай бұрын

Could be on its way out. Good call on getting a replacement!

My alternator is is charging lower than it should and whines. I know it needs replaced. But what causes the low charge and whine?

@Motorcarnut

4 ай бұрын

Many things inside the alternator can cause this, a bad stator, diode regulator etc

What if my pulley wobbles is it just the pulley from alternator or do I have to replace the whole alternator??

@Motorcarnut

5 ай бұрын

Depends, try tighten it. Don't know how it can wobble unless the alternator bearing is blown.

Can you try to upload the whining sound how it looks like PLEASE ??

@Motorcarnut

Жыл бұрын

I don’t have any vehicles at the moment with that problem but sounds like a power steering noise.

@Michael-db4sn

10 ай бұрын

My 09 highlander has electric power steering but its making a power steering noise. So its a bad alternator. Yesterday i lost power steering and brakes while sitting in traffic and all dash lights came on. New alternator on order.

Mine completely broke would turn counter clockwise but would free spin clockwise 😢

@Motorcarnut

Жыл бұрын

Something internal broke

Can anyone help diagnose a problem I have with my 2013 VW Jetta 2.5 SE. The car was sitting for 4 months at a body shop and when I picked it up from there, I turned it on and after driving half a mile, I could not accelerate, all my dashboard lights came on and the car died and would not turn on. I replaced the alternator (twice) and battery and I am still having the same problem. The mechanic is saying it could be the alternator fuse. I bought one and waiting on it to arrive. Does anyone know whether it could be the fuse or could it be something else?

@Motorcarnut

Жыл бұрын

Sounds like an electrical problem, the local mechanic should be able to troubleshoot it for you if they are competent.

Its only going to show voltage with the engine running. If you have cables attached you'll get battery voltage without the engine running. With the engine running it should be around 13.5 volts but keep in mind some newer vehicles don't have voltage regulators in them. Instead its controlled by the computer and the voltage can drop below 13 volts at times and it doesn't mean there's something wrong with your alternator. The computer just shut it off for whatever reason.

@Motorcarnut

8 ай бұрын

Good points

What if it’s violently throwing sparks and sound alike a bucket of bolts

@Motorcarnut

9 ай бұрын

Replace it immediately!

What if you jump start your car and then after a while it turns off?? When i had it on after the jump it read at 14.2 but once i turn it off it wont start again

@Motorcarnut

7 ай бұрын

The battery is bad

When you say whining, does that mean it’s making a noise when you press on the gas pedal? 🚨🙋🏾‍♂️🚨🙋🏾‍♂️

@Motorcarnut

6 ай бұрын

Yes, that too.

My alternators at 2.4-2.7 is it ok ish?

@Motorcarnut

Ай бұрын

What do you mean 2.4 2.7??

Question - I have smoked 2 alternators literally and it gets hot very fast and I cannot figure it out? My starter is new my battery is new and positive and negative are clean. It's a Cadillac DeVille 1992 with a 4.9.

@Motorcarnut

8 ай бұрын

Can be a short in the wiring somewhere. Corroded ground or battery wiring internal like very hard to bend. Or excessive draw from somewhere like high powered stereo amps for example.

@JohnDoe-mt8rf

8 ай бұрын

@@Motorcarnut I have the original radio. I took it to a mechanic and he put a new alternator in it and it works and doesn't smoke or get hot but it kills my battery every 3 to 4 days , weird.

@Motorcarnut

8 ай бұрын

@JohnDoe-mt8rf That is. Could be that new alternator?

I have a little problem, the car is working at 800rpm and when i turn lights and ac on it drops to 500 or even less, I tuned the car to idle at 1100 and when I turn on the lights it drops to 800 or 700, the alternator is charging from 13.6 to 13.9v, what could be the problem?

@Motorcarnut

Жыл бұрын

The alternator is probably good. It can be the idle up motor, or idle air control is another term for it. It mounts on the throttle bode and can be cleaned with carb cleaner. IT’s responsible for raising the engine idle when there is a load such as turning on the AC etc.

What if you test the alternator with a battery tester and it jumps around between 12.3v and .5v

@Motorcarnut

10 ай бұрын

Bad internals in alternator

I just entered the highway trying to pick up speed and all of a sudden I see white smoke in my rear, the car slowly loses speed, I pulled over and popped the hood and it was light smoke near where the alternator was. My car won’t start all you hear is rapid clicking sounds, sometimes when it does turn on for a couple of seconds before turning off, you hear like a knocking noise almost like it’s banging, What might that be??

@Motorcarnut

Жыл бұрын

Sounds like you blew a head gasket or the engine.

@samaden7869

8 ай бұрын

Alternator went bad, didnt notice, seized serpentine belt, water pump stops working, engine over heats. But in this case youd have known because your steering should have been stiff. If serpentine is still connected, your alternator prolly blew out and the battery went flat after powering fans and other accessories. But then, the white smoke is definitely coolant leaking into the combustion so like op said, gasket blown in easier scenario and might as well still be alternator since other sensors and components don't get power, engine blown in worse scenario.

I just bought a chevy impala 2001 3.4 and it sounds like and Rc car well whine and the battery dies and everything but the guy I bought it off of put a new alternator in it could it be a bad alternator

@Motorcarnut

6 ай бұрын

If the whine coming from the alternator, yes

@Yatta760

6 ай бұрын

@@Motorcarnut thank you I’m goin to replace the battery and alternator the battery is old but the alternator is brand new i was driving the car for like 15 mins the battery died and a whine sound coming from the alternator I believe an battery went completely dead it wouldn’t stay charge

@Motorcarnut

6 ай бұрын

@aiyonslifestyle1371 Also if the battery was that bad, just change the battery first and see if the whine goes away. The alternator may be whining because it’s over working because of the bad battery.

Ohm meters show voltage?

@Motorcarnut

6 ай бұрын

Sorry when I said ohms I meant mutimeter.

If my battery dash meter is moving while driving and losing power is it the alternator?

@Motorcarnut

11 ай бұрын

Best way is to test the alternator with a volt meter. Put positive lead to alternator big lug and the negative to the battery, with engine running at idle it should have over 13.5 volts. Also make sure your battery terminals are tight.

Mine alternator wines when I drive should I get it replaced

@Motorcarnut

8 ай бұрын

Yes, that is one sign of starting to fail.

What can cause the whining?

@Motorcarnut

5 ай бұрын

The serpentine belt or the alternator itself.

If I get the alternator replaced what other items should I also get replaced? Like belts, tensioner etc,. 2006 Nissan Sentra 1.8L

@Motorcarnut

11 ай бұрын

The alternator, belt and the tensioner is a great start.

I was driving i heard like a high pitch sounds coming from the hood , and loss power at the red light did want to go then after 10 second it went fine then i turn it off and it didnt want to turn back on, i could hear the car click when i crank it

@Motorcarnut

Жыл бұрын

Could be the alternator belt too if it’s too loose or broke. Then the car runs off the battery till it dies.

@Puffdaddyxxx

9 ай бұрын

@@Motorcarnutbut wouldn’t the car be over heating since the water pump is ran by belt also? Or am I mistaken?

@Motorcarnut

9 ай бұрын

@@Puffdaddyxxx No because the belt that drives the water pump is seprate from the serpentine belt

@samaden7869

7 ай бұрын

​@@Motorcarnutnot in all cars. Toyotas and Lexus run water pump and all accessories with a single serpentine belt.

@Motorcarnut

7 ай бұрын

Depends on what years, models and engines. Some do, most don’t run off a serpentine belt, a timing belt not serpentine.

That’s with it running, what if you can’t get it running?

@Motorcarnut

3 ай бұрын

Take it out and bring it to an auto parts store they test them for free.

Don't you means 13.5 v? ohms shouldn't show up on that test

@Motorcarnut

Жыл бұрын

The meter is an ohm volt meter, but your checking for voltage

@georgesrisomsak9650

Жыл бұрын

​@@Motorcarnut it's called a multimeter.

@Motorcarnut

Жыл бұрын

I know what’s it’s called, most people don’t

Did that test with ohm meter was not a bad alternator there was a broken wire in a large harness by the transmission

@Motorcarnut

Жыл бұрын

Good diagnosis

Do you use the voltmeter while the car is on or off please?

@Motorcarnut

Жыл бұрын

When it’s on to check alternator output

@joey3032

6 ай бұрын

@@Motorcarnutsorry people keep correcting your terminology. Your video was pretty straightforward for what it is. I didn’t need 20 hours of learning how to turn my multi meter on and off , what a car is , how to pop the hood and 30 advertisements for eczema or irritating bowel syndrome in between. I was looking for exactly what you put up. So thank you.

@Motorcarnut

6 ай бұрын

@joey3032 Thank you! I really appreciate that!

How do you inspect whining

@Motorcarnut

3 ай бұрын

You listen for it

what if it spins freely but sounds like something is scratching on the inside?

@Motorcarnut

7 ай бұрын

Depends, can be a bearing or other defect

The symptoms of the bad engine timing chain and head are missing

@Motorcarnut

8 ай бұрын

??

Hey, mine is whining when reving. Now i got the altenator out, but i dont know how to control the bearing. It Sounds smooth when Spinning

@Motorcarnut

7 ай бұрын

Sometimes you need a load on the bearing to make the whine so it’s probably bad anyway.

@denzelcrocker4956

7 ай бұрын

@@Motorcarnut thanks

@Motorcarnut

7 ай бұрын

@denzelcrocker4956 sure, no problem

Uhh read with the engine running or no?

@Motorcarnut

6 ай бұрын

Engine running

I installed a new alternator and belt on my 2012 corolla Belt config is correct, alternator generates electricity and recharges battery The issue is that when I give the car some gas the electronics flash and turn on and off I got that duralast gold alternator Any help?

@Motorcarnut

8 ай бұрын

That sounds like a bad ground wire. Make sure they are all solid and not corroded.

@zo4199

8 ай бұрын

@@Motorcarnut It was dirty, I cleaned it and it's running perfectly fine now, thanks man!

@Motorcarnut

8 ай бұрын

Awesome bro! No problem

I have a 2008 sierra 5.3 the battery meter fluctuates and drops, but doesn’t go under 12v now my Soundsystem has no power. Could it be that my alternator does not have enough power? I have no other symptoms

@TheSteve6489

10 ай бұрын

My whole system is aftermarket. Alpine double din, 1200w fosgate amp, 2 10” fosgate p3’s, infinity kappa 6x5, 350x4 fosgate for highs and a 800 agm battery. Any advise will help thanks.

@Motorcarnut

10 ай бұрын

Absolutely, the alternator is not designed for that much extra load and can’t keep up. Best bet is to get a high output alternator. I myself had high end sound system and that’s where you have to start. Also make sure you have ground strong grounds 4 gauge minimum to and from alt and chassis. Positive side should be beefed up as well.

@TheSteve6489

10 ай бұрын

@@Motorcarnut Awesome will upgrade to a high output. Thanks for the info!

@Motorcarnut

10 ай бұрын

@TheSteve6489 no problem!

I have a 1998 Celica and have had a whining for over a year now. Have replaced the entire alternator and the belt and still have it. It gets dramatically worse when the engine is under load (such as revving) or if the rear demister is on, electric windows going up etc. What is the problem? It’s driving me insane.

@Motorcarnut

5 ай бұрын

Could be your timing belt

@JReiid

5 ай бұрын

@@Motorcarnut Never heard of a timing belt making any sort of whine. It’s only got 30k miles on the belt

@Motorcarnut

5 ай бұрын

@Mw2JaCkJRR if it’s too tight or has a bad pulley it can,

@JReiid

5 ай бұрын

@@Motorcarnut I think the fact it gets louder under load and with accessories on such as rear demister, lights etc points to it being alternator related but thanks anyways.

@Motorcarnut

5 ай бұрын

I don’t have the car in front of me to tell you exactly what wrong with it just your explanation. You said you replaced the alternator and same whine so idk

Can it throw off of abs then abs to limp mode and limp.mode to solenoid codes

@Motorcarnut

10 ай бұрын

If you have solenoid codes you have to diagnose them first.

@Psp-id7uw

10 ай бұрын

@@Motorcarnut hard laggy shifts at a " regular" speed and it throws solenoid d code... if accelerating at a quick speed all shifts are smoother and no engine code I've been clearing the codes soni can continue driving. Shouldn be doing that. Mech diagnosing soon

@Motorcarnut

10 ай бұрын

@PEsp-id7uw I would replace the valve body with the solenoids and you should be fine.

@Psp-id7uw

10 ай бұрын

@@Motorcarnut damn lol...

Would loud squealing on start up and dim low beams be a sign of a failing alternator

@Motorcarnut

5 ай бұрын

Absolutely

@vulcandawg7623

5 ай бұрын

@@Motorcarnut oof... well... at least its a cheap price part... and will be easy for me replace... thanks my dude

@Motorcarnut

5 ай бұрын

@vulcandawg7623 sure no problem

ohmmeter means resistance. voltmeter tests volts.

@Motorcarnut

Жыл бұрын

Correct and multi meter means more

Mine turns, it whines like hell. It test over 13.5... is this super urgent repair or can i wait a second.

@Motorcarnut

2 ай бұрын

Whining means it’s on its way out, can’t guess how long though.

If its whining its the alternator pulley likely seized not the altetnator!!!!

@Motorcarnut

9 күн бұрын

Think about what you just said, if the pulley was seized it rip the belt off or never start in the first place. I make these video to teach people who want to learn, I’m not asking.

My car is running at 15.2 volts. 2012 Cadillac cts. Probably the voltage regulator is bad?

@Motorcarnut

8 ай бұрын

Correct!

@thejoshno

8 ай бұрын

@@Motorcarnut I replaced the battery and all the dash lights went off. Old battery had a bad cell and was 6 years old so it was causing issues. Since I commented everything went back to being normal. But thank you for the video it was greatly informative now I know what to look for in the future.

@Motorcarnut

8 ай бұрын

No problem, thanks for the update!

Mine was winding like a hellcat 😅😂

@Motorcarnut

5 ай бұрын

That's a sign it's going bad

Alternator has 13.5v and then it drops and comes back after sometime. Is it an alternator issue?

@Motorcarnut

Ай бұрын

If you’re testing it from alternator itself, then yes

@zaidmunzir1116

Ай бұрын

@@Motorcarnut hmm ok. I’m assuming you know A bit about cars. The AC went out and stopped cooling around the same time and the battery light came on. Is it related to the alternator or could it be something else?

@Motorcarnut

Ай бұрын

@zaidmunzir1116 You can have the alternator checked by local big chain auto parts store for free. I’m not there to diagnose the vehicle.

Why does it whine for could water getting into it it

@Motorcarnut

Жыл бұрын

Usually it’s failing bearings

With key on engine off the post at the alternator is +12v but when the engine is running the post at the alternator is -12v. I have no idea why its putting out negative voltage

@Motorcarnut

11 ай бұрын

It’s shorted out, replace it

@demo2382

11 ай бұрын

@Motorcarnut okay I'll exchange it. It's "brand new" as well lol.

@joey3032

6 ай бұрын

I’ve heard this can be typical. Poor manufacturing regardless of price paid. I needed this video and comments to help steer me. My issue seems to be intermittent. Which leads me to think bad ground or broken wire somewhere. Checked all fuses but not relays yet. I fear a parasitic draw may be possible also. So many tests so lil time 😫

@demo2382

6 ай бұрын

@joey3032 forgot to reply to the other guy, but I ended up replacing it, and the problem went away. It's always at +12v now with both key on and running. Just a bad "new" alternator.

@Motorcarnut

6 ай бұрын

@joey3032 let me know how you made out

Mine is not charging my battery. I had it tested,i was told it was shooting 13 volt.that it was bad.i have bumper to bumper warranty on my car. Its a 2020 hyundai elantra se 18,000 miles.what do u recomend? Please reply a.s.a.p🙏🙏🙏

@Motorcarnut

10 ай бұрын

Should be over 13.5 volts minimum when running, just take it back for them to replace it under your warranty it should definitely be covered.

@Bella-uy6lc

10 ай бұрын

@@Motorcarnut thank you very much

@Motorcarnut

10 ай бұрын

@Bella-uy6lc No problem, good luck!

@Bella-uy6lc

10 ай бұрын

@@Motorcarnut it turned out to be the battery and it was covered by the warranty. I am so happy jiji

@Motorcarnut

10 ай бұрын

Glad it worked out! And thanks for the update, was curious.

I have had to replace the battery in my car 4 times in the past year. Replaced one a couple days ago and it died within 24 hours. Any ideas?

@Motorcarnut

11 ай бұрын

You have a draw coming from somewhere. I have a video on parasitic draw that can help, check it out.

@relentless7964

11 ай бұрын

@@Motorcarnut will do! thanks!

What about rattling whenbi turn the ac on and shaking when the ac is on ?

@Motorcarnut

2 ай бұрын

Could be idle control is not working when ac is on.

@brandonmorals4239

2 ай бұрын

@@Motorcarnut what can cause that an what can I do ?

@LilyWillow22

14 күн бұрын

@@Motorcarnut how can that be fixed?

@Motorcarnut

12 күн бұрын

What are we talking about?

What if my brake light and battery light turn on when I only accelerate and a fuse starts to click loud i already replaced the fuse

@Motorcarnut

11 ай бұрын

Fuses don’t make noise, maybe you hear a relay? Check the alternator belt.

@warmasters

11 ай бұрын

@@Motorcarnut my bad I ment the relay it was making a loud clicking noise. I just replaced the alternator and that was my problem

@Motorcarnut

11 ай бұрын

Ok, great. Thanks for the update!

All my lights pulsate when I start my car now (only used to be when I was driving).

@Motorcarnut

9 ай бұрын

Sounds like you have a bad ground. Try checking the Negative battery cable for looseness and corrosion.

@LJT9393

9 ай бұрын

@@Motorcarnut I’ve checked that, just replaced the battery like 2yrs ago. My grounding wire also looks to be in good shape still.

What your ... volt meter or Ohm... meter...

@Motorcarnut

2 ай бұрын

Sorry meant volt meter.

can I bad alternator cause all my dash lights to come on?

@Motorcarnut

Ай бұрын

Not really, sounds like you have a short somewhere

Mine's good and everything but it's still not charging my battery

@Motorcarnut

4 ай бұрын

Then it’s not good

Dude what’s the remedy???

@Motorcarnut

9 ай бұрын

New alternator

I got 13.25 is that good enough

@Motorcarnut

4 ай бұрын

13.8 to 14.5 with engine running is what most put out, yours is a little low.

Wat if it making wine using sound even wen you start it too

@Motorcarnut

9 ай бұрын

Light whining sound is normal when the alternator is charging the battery. If it’s really loud and doesn’t go away it’s a bad alternator.

@invadertv8482

9 ай бұрын

Ohh ok well it’s not going away cuz it’s been like 2 months now am hearing that noise

@Motorcarnut

9 ай бұрын

Also, make sure it’s not something else like a power steering pump etc.

@invadertv8482

9 ай бұрын

Ok thanks man 🙏🏻

@Motorcarnut

9 ай бұрын

@invadertv8482 no problem

It doesn't matter what color goes where with your meter. Im an electrician of 14 years.

@Motorcarnut

4 ай бұрын

True but then the meter will show negative voltage instead of positive.

@Sdcalip

4 ай бұрын

@Motorcarnut I'm not insulting you at all, but have you tried it before? I'm just getting an understanding. As an electrician, I'm used ac and DC voltage. Then again my DC isn't mechanical.

@Motorcarnut

4 ай бұрын

@Sdcalip I know, yes i did. No problem

@Sdcalip

4 ай бұрын

@Motorcarnut thank you again for the info. You learn something new everyday. 👍🏿

you can just start it and pull the negative if it stalls its junk why make it so complicated

@Motorcarnut

4 ай бұрын

Because some vehicles you can destroy the computer that way!

Meter on Ohm's will get you a voltage reading???

@Motorcarnut

10 ай бұрын

No, sorry meant muti meter on dc volts

Is it a bmw ?

@Motorcarnut

5 ай бұрын

I think so.

Mine shows 15.7 volts lol bad voltage regulator

@Motorcarnut

Жыл бұрын

Most are not replaceable anymore.

HELP, can it simply need a fuse?

@feliciamartinez9163

9 ай бұрын

Also, AutoZone tested it and said it's bad. Can it just need a fuae

@Motorcarnut

9 ай бұрын

Possibly, don’t know what vehicle you have or what problem you’re having though.

@feliciamartinez9163

9 ай бұрын

07 Honda pilot, brand new battery and I was advised ck fuse for it .I dunno

@Motorcarnut

9 ай бұрын

If they tested the alternator and said it was bad, then it is.

It's prolly the alternator

@Motorcarnut

Жыл бұрын

This video is about bad alternator symptoms

Ohm??

@Motorcarnut

2 ай бұрын

I know, meant muti meter the measures voltage

My alternator is throwing sparks

@dirtybird9184

5 ай бұрын

Is it bad

@Motorcarnut

5 ай бұрын

Yes

@Motorcarnut

5 ай бұрын

Not good, replace it immediately

My car just stopped running well I was driving it’s d21 it has the same engine as the 240sx. It sounds like it wants to start but doesn’t fully turn over and all the electronics work in the car. I tried to jump it and it didn’t start either. The check engine light is on but no battery light.

@Motorcarnut

11 ай бұрын

Could be anything

Tell us how to check diods.

@Motorcarnut

Жыл бұрын

I’ll make a video for everyone

My alternator is definitely bad then cause it reads 10.04 volts while the car is on :(

@Motorcarnut

10 ай бұрын

With the car running than yes it’s bad.

@manuelramos4608

10 ай бұрын

@@Motorcarnut yup battery reads 9.23 & keeps dropping throughout time cause at first it read 9.77 then second time 9.45 & then when I tested the alternator it just reads 10.04. So what do you think??

@Motorcarnut

10 ай бұрын

@manuelramos4608 Yes, alternator is shot. But you can take it out and have local auto parts store check it for free to make sure it’s not something in the vehicle like a bad fuse etc.

Mines is whining

@Motorcarnut

4 ай бұрын

Replace it