I need a new alternator but there is like 3 different amps. 74, 94, 108 amp. Which one do I have and how do I tell? I need help fast please. Should I just get 108 amps because it can make the most or what?
The reason that I think I need a new alternator is because I am getting voltage spikes. My engine will be at like 14.3 volts and then drop to 0 then like 2 and down again and then up to 14 then back down to 5. All over the place. Could it be just the voltage regulator? Please help.

 

:lala:

 

You know what I meant. Don't get smart with me!!

 

But seriously what amperage alternator do I need or how do I tell what I have, or do you guys think it is the alternator or just the voltage reg. or what?

 

Mine is stamped on the alt itself. i only have a 84 amp alt. Sorry i cant help with the other questions.If you replace it i'd get the most powerful alt i could

 

So it really wont make a difference how many amp alternator I get?

 

Check your RPO codesin the RPO decoder. The only ones I remember off hand are:

K60 = 100 amp
K68= 105 amp

 

I just bought a 160 amp one. Only a hundred dollars on ebay! Lifetime warranty as well! My factory one is rated at 105.