Alternator Replacement or Rebuild?

Ended up not being the brushes. Looks like its the Diodes and Regulator. The regulator alone is $150, so I might as well just buy Toyota one for 200.

 

https://www.ebay.com/itm/OEM-TOYOTA-DENSO-VOLTAGE-REGULATOR-126000-1960-126000-2050-126000-2200-IN453/292986581848?_trkparms=ispr%3D1

Is that it?

 

That is it. However, don't know how much I trust refurbished parts from ebay especially considering the price difference.

 

Looks like it might just be a used part that hopefully still works. I'm not sure how they refurbished it. Sometimes refurbished means they just cleaned off the outside.

Did you actually remove the rectifier and check each diode with the diode test setting on a multimeter like in the page of the repair manual posted above?

If the diodes are all good and the brushes are good, then the regulator maybe shorted out. I'm not sure how to test the regulator. I believe the test is performs with the alternator installed and running. Was there a lot of dirt/mud inside the alternator?

And did you ever check you ALT fuse (or maybe it's ALT-S)? Maybe the water just caused a temporary short.

 

I have them all separated out in folders via PDF so I just go up to the main folder and search (control+F on keyboard) for "alternator" or other key term and it narrows it down versus trying to decipher the codes like you said.

 

Says its a new denso part, most likely just a dealership trying to sell dead inventory

Its shipping from the us at least

 

Condition: Remanufactured
Seller Notes: “THIS OEM DENSO VOLTAGE REGULATOR HAS BEEN REMANUFACTURED/REFURBISHED TO THE ORIGINAL DENSO SPECIFICATIONS IN OUR US FACILITY. BEFORE RELEASE, THE REGULATOR HAS BEEN TESTED ON OUR TEST STAND TO INSURE IT MEETS ALL THE ORIGINAL SPECIFICATIONS. THIS DENSO REGULATOR HAS A 12 MONTH WARRANTY FOR YOUR FUTURE PROTECTION.”

 

Just replaced it. Everything works as it should!

Another question, I am planning on doing all of the diff, trans and x-fer case fluids.

https://www.oreillyauto.com/detail/...2001/toyota/tacoma?q=gear+oil+-+75w-90&pos=14

I am planning on using this in everything besides the transmission (using MT-90). However, it says it has LSD additives in it and I cant find a version without them. Is this safe for the truck? or do they have an option without the LSD additive Im not finding?

 

Im soo tempted to ask of you have the old one but i don't need a 3rd spare alt

 

so, is there a video or in depth tutorial on how to rebuild the alternator that you recommend?
Tia

 

https://youtu.be/p6DJU78X8iU

Thats just the electrics, no bearings, but if 15 year old me could figure it out with hand tools using the tailgate as a table im sure youll be fine

 

I just went this route new DENSO 105 amps,
All new parts

https://www.tacomaworld.com/threads/1st-gen-105-amp-bolt-in-alternator.630459/

 

I forgot about this, this is definitely the way to go if someone needs to replace the whole unit.