Tranny help - pleeeeease!!
 

This is driving me and my mechanic up the wall!

Swapped a secondhand transmission into my car, but left the original shift mechanism. I could just get the shift into the P position to remove the ign key, but the box was still in reverse. No amount of adjustment resolved this.

Just swapped the selector from the donor, so the gearbox now in my car has its own shifter and cable. Still a similar problem, except that the ign key doesn't come out and I can't get the lever into 1st!! (got the key out now...)

Tried the recommended adjustment method (into neutral and adjust the cable length) but still no joy. ANY IDEAS???

Also, the original gbox had a separate loom connected to the speed sensor. The swapped box doesn't have a location for the sensor and I'm told this is integrated in the box and the signal wire is in the loom. My mechanic can't find how to get the signal from the box to the original speed sensor signal wire (red and yellow from info provide by one of our members). Again, any ideas before I go grey and bald.....

Thanks

I'm pretty sure that the gearbox in the UK SVX is the same as the JDM SVX, in which case I'm sorry to say that there are few of us who can help you. SVXen bound for the US had a different gearbox fitted to them. :(

Hey, thanks for the response. Shame, I was hoping to use some of the combined wisdom from over there....

Oh well, back to the drawing board. Ever wished you'd not started a job......

what is JDM? are they the same as we have here in NZ?

A T Control
 

Hi Tony.

First of all, the US spec. transmision is not similar to the EU spec.
The final ratio on US is 3,54. The EU is 3,7.
A US transm. has a center differential with clutch system that can
distribute 90/10 % front rear to 50/50 f.r. % torque, but on the cars sold in EU there is a twin planetary gear in the center diff
wich gives basic 36/64 % force front rear, and the LSD clutch can
increase or reduce the distribution to front and rear.
Of that reason the extension case of the trans is probably different.
A transmision for Europe has the speed sensor 1 at rear end of the tranny with acess from outside. Speed sensor 2 is inside the extension case.
The speed sensor 1 give the signal for the speedometer and the wire is white. It is in connector B14, a 16 pole on the top of the converter case. On the female side with clip on top it is lower right
side (seen from inside).

About the shift lever mechanisme.
Disconnect the wire on the trans. check if you can move the lever to all seven positions. Rear pos. is P and front is 1 and with ignition on you shuld also have the indication lamp on the instrument with light. If it so the tranny sems to be ok.

The next problem must be an adjustment of the wire.

Has the car Europe specification ?

Regards

Lars

Hi Lars,

Thanks for this info. I'll try to get a look at the wiring over the Christmas break - much better looking for something that you have an idea about than guessing!

I was thinking of doing exactly as you say on the adjustment. Disconnect the cable, set the gbox position switch in neutral with the setting pin talked about in the adjustment method and then check that the selector actually moves thro' the complete gate. If that does, then I was going to set the lever in neutral and set the cable accordingly.

Glad that my thinking is not way off beam!

As far as I am aware, the tranny is European - it is taken from a UK car. This tranny was actually replaced in the donor car a few years ago by a Subaru main dealer, so it was a bit of a surprise to find that there was no hole for the existing sender 1 to go into!

Thanks again - report back after Xmas!!

Just a thought - what does speed sensor 2 do then? This is the one that I have a blanked-off location for in the transferred gearbox. The wiring from the TCU is separate from the main loom.

I'm a little confused following Lars' description: According to our US manual and my experience with our JDM car, the speedometer is driven by Speed Sensor 2. Surely the Euro/UK cars are the same?

If I recall correctly....

Speed Sensor 1 measures an internal speed and is used by the transmission control unit to determine when to change gear.

Speed Sensor 2 measures the output speed of the gearbox (ie. Road Speed) and is used to drive all the ancilliary equipment: Speedo, Odometer, Cruise etc. (also connected to the TCU as a backup in case SS1 fails).

Phil.

These speed sensors are what the TCU uses to determine torque split. The TCU looks for differences between the readings from the two sensors to detect wheelspin. They also happen to provide information for other stuff, like the speedometer. It's interesting that the sensors are in different places on the Euro/JDM transmission. In the US tranny, speed sensor 2 is in the front diff housing and speed sensor 1 is in the extension housing (where the MPT clutch lives).

Do any of you have any sort of diagrams or pictures of this Euro/JDM tranny? I'd like to see one.

Maybe when my current auto dies, I'll get one of yours - I'd like the rear bias. :D

About speedometer
 

Phil

You are maybe right in your remark about speed sensors.

The reason to that I say it is SS1 is that I have made a test by
disconect B14 and then connected a testgenerator adjusted to
about 1 volt sinus signal with 500 Hz to the white wire wich comes from SS1. And with ignition on.
The result was the speedometer showed rufly 40 km/h. and the
distance counter was also moving.
If I remember right the same was done on the wire for SS2.

The reason to the test was to find a way for signal when I replace
the AT for a manual 5 speed

I have started to convert to 5 speed manual.

The AT does not shift up.

Regards

Lars

Any transmission wiring diagrams for later cars than 92?

Starting to clutch at straws here.....

Hi Tony, I'll scan the diagram for the 94 Euro mod for you ASAP.

The speed sensors are different for the two different transmissions. The US being made up out of a FWD unit, has the speed sensor no 1. Driven off the front drive shaft and speed sensor no2 driven off the rear drive shaft.

The Euro has speed sensor No 1 driven off the rear drive shaft and the speed sensor no2 driven off the transfer gear, that drives the front wheels.

Harvey.;)

Tony the 94 Euro wiring and speed sensor diagrams, are in my locker.
All the best.

Thanks for your help Harvey.

I'll be looking at the car over the break and report back.

You may just have saved from Santa bringing me a toupe to cover the worry bald patch developing on my head....

Fingers crossed!!

Tony