Hi all!

I got a problem recently. My old battery totally died on me, so I had to tow my 89 Maxima to the next AutoZone shop. They changed the battery and checked the charging system. So instead of 90 Amps that the battery (Duralast 24DS) needs the alternator gives only 28 Amps. They recommended to change the laternator which is $80 plus I have to pay for the labor (got quoted for around $100) - all because you have to do it from underneath and I don't have the possibility to lift the car securely

So if anybody knows, can it be just bad brushes? If so how to change/clean them? If not - is it possible to change an alternator just on a parking lot?

Any opinions are greaty appreciated.
Thanks.

 

buy a new alternator....get or borrow a jack and jack stand from a friend or some how....and do it in the parking lot

 

since when did autozone get an ammeter.
and at idle 28 amp output is not unusual from an alternator.
the alternators MAX output is 90 amps, but that's at around 4k rpm IIRC

 

thats right the alternator is not constantly putting out 90 amps, you would blow the battery up, LOL

 

..some ramps will be..

 

Well, AutoZone had this device to check everything concerning battery operation. So they put it on, and at 2K rpm the alternator was giving only 28Amps tops. I think that's a little bit far from normal. Am i right? I'm not saying it should be 90 constantly

 

since I don't know if you have a VE or VG.
VG specs
<23a @1300
<63a @2500
<84a @5000
VE
<34@1300
<80@2500
<91@5000