Im looking to replace the alternator and found some really good deals in JC Whitney catalog. They list several different alternators,with different amp ratings. How can I determine the amp rating of my stock alternator,
still in the 3.0 4runner? I do have a LCD Digital multimeter.
any help?
any tips for when I do go to knucklebust the old one out and the new one in?
Thanx all

 

i doubt a multimeter will measure that many amps, although an amprobe liked the ones used in HVAC work might read that high, depending on the meter you get. but i noticed once in my under-hood fuse panel, there is a fuse that is labeled as alternator, and it's an 80 amp on i believe...

 

the stock 3.0 alternators are 60A

 

Get the highest you can.

 

whenever i was replacing mine, advance auto parts' "HO" model was a whopping 70A for an extra $100!!!

 

wow, 10 amps extra for an extra $100, that is jaw-dropping. but i say go with one from somewhere like the JCWhitney or even Summit or Jegs that you know will fit and know has a higher output...

 

even then unless your actually pulling XX amps, the meter wont assist.
it displays what is actually going through the meter, not the maximum output.