7 Causes When a Car or Truck Keeps Burning Out Alternators
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- เผยแพร่เมื่อ 7 ต.ค. 2024
- The main causes that will burn out an alternator and cause it to repeatedly fail. Read here for more information. www.backyardme...
Why an Alternator Keeps Burning Out.
www.backyardmechanic.org
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Very nice job fella. Now I have a list of probable causes.
I bought a 2014 passat TDI not even a year ago and i’ve had to replace the alternator twice. It just went out again and i’m getting really frustrated because nobody can figure out what’s wrong. After watching this, i have a fleeting suspicion that diesel might be getting into the alternator and trashing it. There is a fuel leak somewhere and it creates a mist of unburned fuel in the engine bay. I’ll be getting that fixed along with a new alt and hoping for the best.
Yup, time to replace the voltage regulator next. I just took a look at it and the thing might be as old as my vehicle, my vehicle is 50 years old, a 1974 Superior with the Dodge 440 big block, my alternator just shit the bed at 20,000 miles! I just replaced it last year. Pack rats had done a number on this vehicle, replaced so much wiring.
Do modern vehicles have it inside the alternator housing? I was suspecting that could be an issue as well.
Thank you for that, concise and easy to understand. Try as I might, I cannot find anything definitive about maximum temperature that a stock alternator can safely run at, no OEM numbers or even consistent "expert" opinion. Regarding your item # 4 about extra loads; I am drawing 20-40 amps extra (depending on how I set it) from my 160A alternator to charge my RV battery when driving. Running normally with all usual loads (headlamps, fan, wipers, radio etc) max draw is up to 65A or so. So it stays well under it's rated capacity even when charging the extra battery.
My intent is to measure temperature with and without this extra load. Is there a "safe" maximum temperature that should be adhered to?
The temperature range likely varies between alternators, but my guess would be around 200 Degrees Fahrenheit. Here is a link to a forum where they talk about alternator heat ranges that might help. www.cruisersforum.com/forums/f14/alternator-temp-what-is-normal-range-228245.html
Thanks for the video, great info. Trying to figure out why my 2011 Edge keeps burning the alternator, since last Friday have changed 4 alternators, today is Monday and still haven't figured out what is wrong. After install everything looks good, no dash massage, once the car is moved the dash light appears and burns the alternator.😭any suggestions will be appreciated ✌️
Maybe steering wheel fluid leaking on alternator that was my problem Damaging the alternator.
Thanks for explaining. I have a 2013 Infiniti JX35. In the past two months the alternator failed three times. The repair shop replaced it two times in last 2 months now it’s back in the shop for same reason. They said they used dealer alternator. I am clueless about this getting frustrated without a car. Still waiting for the 3rd alternator to arrive from the dealer. But why is this failing this often.
Hey how is your 3rd alternator working? I'm having the same problem out of my v6 altima everything on the car works good but replaced 2 alternators now battery light on again so curious of your current outcome as well
Not having an upper proper bolt can cause jiggling and the alternator may go bad sooner than expected, or the belt
Awesome video! 👍🏽
If you got the alternator from autozone or oreillys or advance. It's just a low quality part.
I got 2006 Buick 1 .5 year ago since then 3 times alternator stop working... yesterday I stopped working out of the blue... definitely something is wrong with the wire system 😢
Great content 👌
Thanks very much for your video, it is helpful to me. Right now, I am trying to figure out why the factory-rebuilt Bosch 140A alternator I just installed in my 89 BMW is charging fine (14.2 A) at idle but once the engine warms up it drops to around 12V. Car starts right up, correct battery 1 year old, no additional electronics, engine to chassis ground strap new, You obviously know a lot about these things. Any suggestions for me to pursue?
I would test the voltage regulator. While rare, sometimes rebuilt alternators are duds.
Will do, thanks. Wouldn't speak too well for Bosch if their "factory-rebuilt" alternator is a lemon out of the box! Appreciate your suggestion!
I have a 05 Chevy trailblazer I just put a brand new alternator on it add a battery but my alternator is getting hot can you tell me what's going on and I do not have any extra electrical components hooked up
Question engines off and cold yet when the battery terminals hooked up the alternator starts getting hot and it's draining power. Are these diodes the one-way diodes?
I've been popping alternators on my boat. The start battery is new but the house battery is 4 years old. The Atem charger sends a10 amp charge over to the house battery after the start batt is full. If the house battery has a bad cell/short, would that kill the alternator ??
Hi i have a L300 mitsu
. And it keep burning tha main altinator fuse when i rev the van? I brought the alt. To a specialist rebuild it .i thought it was the regulator but it is doing the same thing . Help plzzzzzz
My new alternator stops charging the new battery when I run my AC. Any hint about what causes this ?
Melted my alternator doing a race at the drag strip. Windings completely melted. I don’t know what it could’ve been, maybe track debris, oil from the oil cooler, or maybe the engine just pulled so much current it fried it.
I heard high output alts can get so hot that they melt. So then I wondered if a special fan should be built to cool off that extra heat on top of what the engine is creating.
So I’ve been having issues with mine I’ve changed this being my 3 one but this time I bought a new one instead of a rebuilt but I have noticed that I get a wine sound over the speakers then the alternator goes out and the wine goes away? Any suggestions?
My problem with my alternator malfunction was steering wheel fluid getting in my alternator. Once I got that fixed, my car is running very well.
Power steering fluid?
Yes, power steering fluid kept leaking on my alternator damaging the alternator. I thought it was the battery. I have a 2010 Nissan maxima sv premium with 50,000 in miles. When the leak was fixed, problem was solved. Car runs great now.
Bro no way? My maxima is 2009 and the alternator keeps killing but my power steering pump is also messed up? Maybe this is my problem.
@@mikedior3089 My car is still running well no problems with the alternator
@mikedior3089 did you ever figure out if your power steering on your maxima was reason for your alternator going out repeatedly or was it a different reason?
My new alternator burn after 20mins
Same happened to my alternate like 5 times I replaced it can you plz help how you fix the issue
Made in China
Town and Country turned still can't get it to charge change battery and alternator twice and alternator just won't charge. I installed voltage regulator kit and still not charging. I can't believe two new alternators could be bad.
I can't figure this one out!
I keep putting new alternators keeps smoking right when I put them in. Any reason for this?
Same issue did you figure out anything?
Same
if it smoke when you put it in you have a short somewhere.
Could be computer as well mine was
Mice are gremlins to!
I don't think I wNt to ask a question which would be ignored
lol. Yep people are lining up with their specific problems.
Anyone ever see an alternator make a battery short circuit.
If it fails within the first hour