newer trans wiring on old connector

TomsSVX · #1 01-31-2004, 12:38 PM

i bought a 01 legacy trans for my svx and im screwed. all i wanted to use was the diff and pinion, but it turns out that the pinions are different. so now the only thing i can do is use the new trans but i don't have the tcu and wiring would be a mess. what i am trying to get at is, is there a way for me to use the tcu connector from the old trans on the new one? i was going to cut both connector and connect matching wires, but the only thing is there are more wires on the new one. Can i just connect the matching wires and hope for the best? I need facts though, last time i asked if i could use the diff and pinion i was told it should work, but guess what, that was wrong so please anyone with this knowledge please let me know asap.

Subafreak · #2 01-31-2004, 01:06 PM

Sorry I don't have any wire diagrams for 01 Subarus but Iwas just wondering, were you trying to get lower gearing for your SVX and what ratio is in the 01 tranny?

#3 01-31-2004, 04:43 PM

Quote:

Originally posted by tomssvx
i bought a 01 legacy trans for my svx and im screwed. all i wanted to use was the diff and pinion, but it turns out that the pinions are different. so now the only thing i can do is use the new trans but i don't have the tcu and wiring would be a mess. what i am trying to get at is, is there a way for me to use the tcu connector from the old trans on the new one? i was going to cut both connector and connect matching wires, but the only thing is there are more wires on the new one. Can i just connect the matching wires and hope for the best? I need facts though, last time i asked if i could use the diff and pinion i was told it should work, but guess what, that was wrong so please anyone with this knowledge please let me know asap.

Good luck! That 01 is a phase 2 trans and EVERYTHING is different and as far as the electrical goes, you will have to change the pins at the trans, at the TCU along with a TCU from that trans and the connector. Sorry, but I don't see it happening.

The only difference of the front diff is the gear ratio? Right? Change the diff and the rear diff to match.

TomsSVX · #4 01-31-2004, 08:42 PM

thre new ratio is 4.44 and i can't just change the diff cuz the pinion is different. are you sure i can't just forget about some of the wires or splice them together. also the old pinion is mutilated so i can't use any of it.

i also don't care if the trans will burn up in 50-60 thousand i want to put a 5speed in it anyway to get rid of this mess of automatics anyway

TomsSVX · #5 01-31-2004, 08:50 PM

i really need wiring diagrams and what the wires go to and what the things do inside the trans, if you could i need diagrams of the 94 and the 01. thnx for ur help i am in deep crap right now

TomsSVX · #6 01-31-2004, 11:10 PM

from what i have heard the newer ones send info back to the tcu and te older ones didn't, which wires are these and i will leave them out

TomsSVX · #7 02-01-2004, 08:59 AM

ok i did a little research and found that the 3 sensors are speed sensors but instead of having 3 duty solenoids 2 shfift solenoids the new one has 4 duty solenoids and 2 shift solenoids and 2-4 brake timing solenoid and a low clutch timing solenid. WHat do these do and could i hook up the new wires to the old harness????

#8 02-01-2004, 09:37 AM

You do know that you will have to replace your rear diff if you install this transmission, right? Just checking.

Mike

#9 02-01-2004, 01:08 PM

Quote:

Originally posted by tomssvx
ok i did a little research and found that the 3 sensors are speed sensors but instead of having 3 duty solenoids 2 shfift solenoids the new one has 4 duty solenoids and 2 shift solenoids and 2-4 brake timing solenoid and a low clutch timing solenid. WHat do these do and could i hook up the new wires to the old harness????

No you cannot use the old TCU you need a new one with the connector. Your info is right about the speed sensors and the solenoids. This link has self destructed!

#10 02-01-2004, 01:13 PM

save it and then use the open with and choose acrobat.

TomsSVX · #11 02-01-2004, 08:20 PM

i know i would have to change the rear, if i had awd, i am blessed w/ the lighter and faster l series. also i want to know if the legacy transmission in 97 and 98 had the same pinion shaft as the 94 svx. therefore i can use the 4.44 gears i have, making it even faster.

#12 02-01-2004, 09:57 PM

You bought an awd transmission though...

Mike

Mr. Pockets · #13 02-02-2004, 09:39 AM

Tom, as I'm pretty sure I told you in early January, you need a FWD transmission, unless you're somehow adapting the AWD tranny you bought to make it FWD. Simply not installing the prop shaft isn't going to cut it for a number of reasons.

As for the wiring, I'm going to agree with those before me who said you need the TCU for the tranny you bought.

Still, I don't see how that tranny is going to work in the first place...

TomsSVX · #14 02-02-2004, 06:05 PM

i have come to a new solution, as you have said numerous times, i cannot use the awd tranny and i have decided not to. Now all i need to know is can i get a pinion that will fit my 94 fwd that has 9 teeth for the 4.44 ring gear i have, all i needed was a new diff not a whole tranny.

by the way i believe i could have used the awd tranny if indeed i did remove the tail shaft and swapped out the rear gear on the input shaft for the new one w/ the old one and it would have worked. i tore down the trannies and took a look and it could have been done, if the tranny was not a phase 2. take a look next time u get a chance at urs

#15 02-02-2004, 06:27 PM

From where do you get the information that this tranny is 4.44? That year legacy should be 4.11.

Mike