I've got a 2001 4runner that i recently bought with high mileage that's tranny has seen better days. I am on the hunt for a used transmission to swap in when this one finally goes but am not sure of any differences in the electrical connectors, etc over the years...does anyone have any idea or can I basically take any 4x4 auto transmission from any 4runner, tacoma, tundra, sequoia and swap it in?

 

Check your driver door sticker, it will tell you which transmission you have. It's probably the A340F. Minor differences between some model years. You'll want one from an '01 or '02, I believe. I know for sure they changed in June of 1999, but not sure if they changed between then and when yours was made. Check your production date as well...on the same sticker. Then head to car-part.com

 

I know it is an a340f, all of the 3rd gen 4runners are to my knowledge, just not sure what years, if any, are electronically compatible. This sr5 has the same t-case set-up in it that my prior 1997 and 1996 limiteds did but has tractional control, etc...I am just trying to determine how wide open I can make my search. Internally speaking I don't think it makes much of a difference, I replaced a solenoid in this thing recently and there were three different possibilities (different suppliers, etc) so I am sure they operate within a range, I am really just concerned whether or not my computer will talk to the new one.

 

IRC you may be able to use a tranny from a 99-00 limited 4wd. I think it was username Lee that had his done.

 

thanks, do you know if it had anything to do with the electronics? the trac and vsc to my knowledge is all handled through the braking system, the t-cases all have the same mounting and splines, etc so the only thing that could have changed would be the internal electronics or the computer...

 

You are talking about the Multimatic tranni that went into the last half a year of 99 and beyond. I had a problem with my A340F got the Strwberry milk shake now i'm into lookin for another A340F and was woundering pretty much the same thing wich ones i could use and couldent use on my 99'. Even though mine was built in last half of 98.

 

I don't have the All wheel drive transfer case, just the one that is push button to engage 4x4 high and then shift for low range. I am not worried about the transfer case though, the t-cases should all have the same bolt pattern and can be swapped onto any of the transmissions. I am really only concerned with the transmission control unit and the electronics/solenoids within the tranmission being electronically compatible/plug and play.

 

All 4x4 '01 and '02 4runners had the multi-mode system (aka center diff lock, aka, AWD). So did the '99 and '00 Limiteds, although the design was slightly different. Not sure why you say that you don't have the multi-mode because you should. Did someone put an older t-case in yours?

You should have a center diff lock switch on the dash, while the '99 and '00 LTDs had the center diff lock but it was actuated by the "j-shifter" t-case lever (which has another position in it) instead of a dash switch.
Any '01 or '02 tranny out of a 4x4 will be a match (if yours is stock). A '99 or '00 4x4 LTD tranny may work, but since the t-case is different, the wiring to the tranny may be too.

 

sorry for the confusion, yes it does have the center diff lock, but again, this is all in the transfer case, the t-case shouldn't matter to the transmission, it should bolt to any transmission.

 

I know the trannies in the '01s and '02s take totally different looking filters than my '97's tranny and the bolt holes are in different spots. I always thought that this was because the transmission was slightly changed to accomodate the newer t-cases. They will bolt up AFAIK, but my concern would be electronic/wiring/ECU issues.

 

that's exactly my concern, just almost impossible to tell what the differences are...I mean in 2001 alone there were three different possibilities for the shift solenoids in my transmission according to Toyota. The only way to get the correct one was to use my vin# which tells me that toyota has several different manufacturers building parts that all operate within the same range...

 

The easiest way to tell is look for the kick-down cable coming off the transmission going to the throttle body. The 01 and 02 transmissions are TOTALLY computer controlled part of the throttle by wire system.

The transmission you want will NOT have a kick-down cable!

FOG