2001 s80 t6 problem

KobeBryant · Post by **KobeBryant** » 30 Dec 2016, 15:53

Hello to all,
Today i buy my s80 t6 with gearbox problem.My question is,can i use gearbox from 2.9 non turbo?I know that t6 is geartronic,and 2.9 is not but is there some how i can use this gears.Sorry for my bad english!

Legofan · Post by **Legofan** » 30 Dec 2016, 17:15

UncleBoost · Post by **UncleBoost** » 30 Dec 2016, 19:38

Ditto... Either get yours rebuilt by triple edge or roll the dice (take a chance) and buy a used gearbox from a preferred rear ended wreck.

KobeBryant · Post by **KobeBryant** » 30 Dec 2016, 23:51

So i have gearbox from 2.9 that i can't use...that's nice

Post by **precopster** » 31 Dec 2016, 06:20

Technically they both use the GM 4T65 transmission however the final drive ratio is different from the turbo to the non turbo.

Ratios vary as per this table:
Automatic transmission
Gear ratios:
Engine: B 6284T B 6294S
1st gear 2.92:1 3.27:1
2nd gear 1.57:1 1.76:1
3rd gear 1.00:1 1.12:1
4 th gear 0.70:1 0.79:1
5 th gear
Reverse 2.38:1 2.67:1
Final
drive 3.29:1 3.69:1

KobeBryant · Post by **KobeBryant** » 31 Dec 2016, 12:25

What is the problem with the ratio?Low max speed.Main problem is with the control module i think.My ECU will not read the 4T65EV.

Post by **precopster** » 31 Dec 2016, 16:40

ECUs don't read the transmission. They read the speed sensors and any other sensors that report how fast the car is going relative to engine speed.

If the speed sensors report a different road speed relative to engine revs than your car is meant to report you will get transmission fault codes and the car will go into transmission limp mode.

You could try the S80 non turbo TCM (trans control module) The car may work fine when paired up with the correct transmission.

KobeBryant · Post by **KobeBryant** » 31 Dec 2016, 17:06

The best thing to do may be to rebuild my transmission.

Post by **precopster** » 31 Dec 2016, 19:36

Yes apparently many of the repairs on this transmission can be done while it is still attached to the car. You could look up here and on Swedespeed as there are many tutorials about this topic.

KobeBryant · Post by **KobeBryant** » 31 Dec 2016, 23:15

Where i can buy the parts?I'm from Bulgaria and here i don't have many options.Tere are no rebuild kits here...