Buying new alternator... help plz

[RollinRemz05 10+ year member]

Im getting a new alternator tommorow. My stock is 90 amps the one im getting is 125 amps am i going to see a difference at all? My lights dim, rpms drop and sometimes my amp clips. I beleive my alternator is bad. When my car is ideling the voltage comming out of my batter should be around 13.5 volts right? Well mine stays at about 14.7 and the alternator never shuts off. Is this a sign of a bad alternator? Thanks alot!

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[Death By Bass 10+ year member]

alternators dont shut off...

higher voltage means tehres less load on the alternator, so your battery is probably shot...

higher current alternator will mean your revs drop even more, as you can pull more current from the alternator, which means it needs more power from the engine...

basically, it sounds like a new alternator will do nothing...

 

[RollinRemz05 10+ year member]

My battery is brand new what else could be wrong?

 

[Death By Bass 10+ year member]

My battery is brand new what else could be wrong?

then your battery is fully charged, and floating at like 14 volts, so tehre's no load on the alternator anyway, except when you play music ofcourse....

 

[RollinRemz05 10+ year member]

My battery dies every once in awhile but when i took off the power wire after i thought the battery died the car started right up. This must be an amp problem right?

 

[Death By Bass 10+ year member]

My battery dies every once in awhile but when i took off the power wire after i thought the battery died the car started right up. This must be an amp problem right?

I'd probably just think you had dirty battery terminals then.

 

[CJL 10+ year member]

x2