5spd to auto?

[Toyota h8r]

Since no one would answer my questions in my other post.:3d_frown: Whats all involed in a swap from 5spd to auto? I have most of the stuff ie: tranny(duh!), ds, harness/ecu, shifter and cross member. Do i need the right gauge cluster? Also, does the auto supras have their own computer for the tranny? I know I sould like a moron but i got to learn somehow.:1zhelp: Pleaze help me! :1zhelp: Thanx everyone! Shelby:naughty:

 

[Yellow 13]

There was a small computer with the ECU that we removed when we went auto to 5-spd. Also need a kickdown cable and the bracket for the KD cable on the linkage.

 

[Toyota h8r]

+1 to yellow13! Thanx for some answers. Anyone else? Maybe Mr. Lange could bless me with his presence?

 

[born2drv]

i think the gauge cluster will work fine from a 5-spd... but the auto has a O/D OFF light that turns on and off if the O/D is on/off (obviously) but it is also used to get tranny codes and if you don't have a superminotor without this you will not be able to troubleshoot your tranny. also there is a "power/normal" light on there as well for the shifting patterns that you can choose.

 

[Yellow 13]

I noticed theres no torque converter or auto flywheel on your list.

Also the turbo trans are supposedly stronger than the N/A auto trans. Just in case you didnt know.

 

[bonus12]

don't make the mistake of switching to auto.

 

[born2drv]

how is that true? i thought they were all the same?

the differential is different i believe but you could probably use the one you have now whatever it is....... the driveshaft definately needs to be replaced, it's a different length with the auto.

also the speedo cable is different. the auto has 3 pcs, the 5-spd has 2.... not sure if the last auto pc will fit onto the 5spd two pcs...

i just bought all 3 sections of my auto speedo and i'm doing the 5spd swap, i could sell you the 3rd pc (closest to the tranny) if you're interested. its like 6" long or something, it's really short.

 

[Yellow 13]

On hellslegion's swap we just did the manual speedo went right into the auto speedo. the only difference I saw was the piece that goes into the tranny's.

 

[robbo185]

why are you going auto if i may ask?

 

[Toyota h8r]

Thanx to all whos helping! I do have the ds flex plate and coverter. It is a turbo trans. To answer the question of why, i bought it almost done. Last, can anyone elaborate on what yellow13 said about a small computer near the ecu? Is that the auto tranny computer? Sep from motor ecu? Thanx and rep will be given when i get back on my computer! Shelby

 

[Yellow 13]

Yeah its the trans control unit. Mines stamped 7MGE so i assume you want a 7MGTE.

 

[Toyota h8r]

Yeah its the trans control unit. Mines stamped 7MGE so i assume you want a 7MGTE.

My whole set up is gte so that proally wont work? On your harness yellow, by the ecu, did it have a lot of smaller plugs near the ecu? Im trying to figure this out. The engine/under hood harness is out of the car not yet installed. So....im learnin quick! Thanx all! Shelby

 

[Yellow 13]

There are spare plugs near the ECU. Some things like ABS and the auto ECU come on the harness even if the car doesnt have them.

 

[swaq]

don't make the mistake of switching to auto.

Agreed. Sports cars were not meant to have auto transmissions in my opinion. If you get one that already has an auto in it, fine. But if you're replacing a manual transmission (and the R154 at that!) with an auto then you are ruining the car.

My guide to the 5-speed to automatic conversion is very similar to my guide on converting a hard top to a targa top:

1. Sell manual transmission car to someone who wants a manual. There are plenty of people who would pay more for a manual.
2. Buy an automatic.

 

[3p141592654]

There are

 

[Yellow 13]

There are

There are what...?

 

[3p141592654]

There are a few connectors that go from the main engine wiring harness to the auto trans by the starter. That probably means that the main engine wiring harness will need to be swapped or something jury rigged. The auto ecu connects to the trans through the connectors.

 

[born2drv]

it is easier (and a lot cheaper) to get an auto rather then a 5-spd because of the electronics, and solenoids, and ABS sensors, etc, etc, that could malfuction and be expensive to buy now and replace later....

but i don't agree with the auto not being a sports car........ if anything an auto will perform better on the track then a 5-spd and be "more fun" to drive if used as a daily driver... if you're a purist go buy a lotus or something. this car was meant to be a daily driven luxury sports cruiser. the auto can be built up but it's very expensive.

i did the 5spd swap because it was just too much to spend on a tranny now... i can always swap back later since i'm going to keep all the parts i need in the car if possible or in my garage.

 

[Yellow 13]

All the plugs are there whether its a manual trans or not. Plugs are just extras on a manual.

 

[3p141592654]

Good to know. Then the harness is not an issue. The kickdown cable is very expensive from Toyota. Make sure you get one from the donor, along with the throttle linkage assembly on the engine.