alternator bearings bad?

[bird of fire]

My alternater is starting to sound like the bearings are going bad. I got it test and it still good. The Voltage output is around 13.2. I have a few extra that draw from it but when i put the light and heat in high she goes dont to 12.7? She I get a new stock alternator or a strong alternator?

[Mighty Thor]

Re: alternator bearings bad?

My alternater is starting to sound like the bearings are going bad. I got it test and it still good. The Voltage output is around 13.2. I have a few extra that draw from it but when i put the light and heat in high she goes dont to 12.7? She I get a new stock alternator or a strong alternator?

This should be in the General section. I don't remember but it sounds like the voltage is OK. Ofcourse it will drain a bit when you turn on your accessories.

Sometimes the alt. can sound like a supercharger, but it doesn't mean they are bad yet. Once the battery starts draining quick then the alt. has gone bad.

[Rob Bell]

Re: alternator bearings bad?

I think that with no real load on it, the output should be about 14v. The 13.2 and then dropping to 12.7 under load seems kinda low. But, as long as your battery is staying charged and the lights are not dimming a lot, I wouldn't worry about it. Just replace it if/when it ever dies.

If you have a lot of current-drawing accessories, a high-output alternator would be a good replacement when the time comes.

[bird of fire]

Re: alternator bearings bad?

I keep it on a trickle charger. I should of said that I put a volt booster stage 2 from zzp to get it over 13.

[kristen]

Re: alternator bearings bad?

why the heck is this in app?

[TheGr8Schlotzky]

Re: alternator bearings bad?

Off you go to General Tech.

[Tom Rs]

Re: alternator bearings bad?

just buy a new one and go from there. Sooner or later it will go bad anyway

[bird of fire]

Re: alternator bearings bad?

If i were to get a stronger one would that be ok? I saw a 200 amp alternator on ebay.

[Leonard 3.8L]

Re: alternator bearings bad?

your output is supposed to be around 13.8

[bird of fire]

Re: alternator bearings bad?

well my output is not 13.8 but I get my alternater tested and it came up good. Would it be ok if I went with a stronger alternator casue I have some extras

[vanbibber]

Re: alternator bearings bad?

12.7 is more than fine,between 12 and 14 is normal. wouldnt worry about the whine, mine has whined for almost 4 years on the t/a and it works just fine. that and its funny seeing the look i get when people ask if its supercharged and i just laugh about it and tell them not yet.

[cam98aro]

Re: alternator bearings bad?

12.7 is more than fine,between 12 and 14 is normal. wouldnt worry about the whine, mine has whined for almost 4 years on the t/a and it works just fine. that and its funny seeing the look i get when people ask if its supercharged and i just laugh about it and tell them not yet.

my car whines also.. mostly when engine braking in 1st or 2nd gear

i have had people ask me if it was supercharged before, although i do hear a lot of 3.8's that make the noise, never an lt1