Alternator Output Help????

[2sho4me]

I have a 92 MTX and it was not pulling more then 12V running so I bought a new interstate Battery and even went and put a new 90 amp Alternator on the car. Well 2000 Miles and 4 months later the battery is dead again and no good. I just got a free replacement battery and it starts fine but only runs 12V when running. So if I have a NEW Battery and a NEW Aternator I just took it to autozone for them to test and they are telling me the Alternator is not charging the battery right so what could it be???? Bad Alternator again??

I want to have a higher output so if I take it to a place that re does them can I up the 90amp to a 180amp with out doing alot of mods?

Any input would be great

Thank You

 

[hawkeye18]

I saw somebody get four bad alternators in a row once. Don't be surprised. I'd get it rebuilt by an alternator/starter rewind shop. Those usually get better results than buying another bad remanufactured one.

 

[Eric VerValin]

x2.. I've had issues with "new" starters too...

rebuilds are usually cheaper, and they actually replace all the worn parts.. If you go to get it rebuilt, you may have to wait a day or two for a part to come in. I know my guy here in town stopped stocking the stuff for my 92, and I had to wait for him to order the diode pack I think it was...

Just something to keep in mind.. the newer alternators are pretty "standard" still.

 

[SHOZ123]

Has to be the alternator. Batteries do not make electricity.