3AT Problems in 86 Leone Turbo

[ANIM_Hooneru]

Good Evening Subargurus and Subarguruettes,

I'm seeking some advice from someone who has played with the 3AT 4WD Boxes fitted to 4WD Turbo (AC7) Models here in Australia.

The transmission has been fine since I've had it, I rekon I would have easily put 8000-10000kms on the thing since I bought it. When I first got it rego'd I went straight to the auto trans specialist two towns over and got them to check it out, do a service and band adjustment etc and the boss man down there was of the opinion it was in fairly good condition for its age.

Fast forward to two days ago.

I was driving down the highway, in top gear doing about 85kms/h, I'd backed off a bit for a slight corner, when I went to throttle out of the corner, nothing. She just revved, and went up to 6000rpm no worries.

I tried accelerating again, did the same thing. I slowed down and pulled back to 2nd gear manually, and it drove; so I pulled up and checked things out under my car. All seemed ok, checked my fluid level, it was fine and was still bright red and didn't smell burnt at all.

I tested the car a bit on the road, Reverse still worked fine, so I put her in drive and accelerated, no problems. I turned around and headed for home, accelerated through first gear, it dropped into 2nd, then at 60-70kms/h, dropped into 3rd, and revved out and went nowhere. I limped the 20kms back into town at 50kms in 2nd, got home, checked it out again, no oil leakage, the trans oil was still ok, so I left it for the night.

Got in the car to goto work the next morning, and dropped it in D, and took off, and it wouldn't shift out of 1st gear. I dropped the shifter back and she went into 2nd, but no longer will go into 3rd or change gears on its own.

Bearing in mind i'm not a mechanic or transmission repairer (I'm but a mere lowly Auto-Electrician), I consulted my FSM for 86 Year Leone's and XT/Vortex's and read the section on Autos and was overwhelmed by just how much there is in them.

So what I have done so far...
* Checked and adjusted my idle speed and ignition timing

* Visually checked the transmission for leakage and disconnected wires, hoses etc
* Adjusted my shifter linkage
* Consulted the transmission specialist and discussed brake band adjustment, and under advice and FSM, retorqued band adjustment to 9NM and backed it off two turns

From what i've seen in the hydraulic system, the next item I see that has the two problems in common is the Governor Valve, my plan for tomorrow is to remove the exhaust and remove the G.V. and clean/inspect it.

I guess what I am after here is the opinion of someone with more experience with Autos then me to say if I'm on the right track.

From what I can interpret from my book, it wouldn't be a Clutch Pack or Brake Band, because if it were a Clutch Pack, I wouldn't have 1/2 gears, and if it were a Brake Band, I wouldn't have the Engine Braking effect.

 

Anyone who has a parts listing for the 3AT, if you could post it up that would be much appreciated.

 

Also another point - I do have a 5sp setup here that I can put in, but I don't really have the time and cant afford to take my only rego'd vehicle off the road for long...if I find that 3rd gear internally has actually let go, then the 5sp swaps on the cards, unless someone down the East Coast has a 4WD 3AT they would be happy to part with.
/endrant.

Thanks in Advance, guys.

[DaveT]

Checking the governor sounds good. I have not had that combination of trouble. There are a couple of servo tubes that can fall out and loose functions. Drop the pan to check those. I had one fall out, lost 3rd and reverse. A factory service manual has a very detailed description and diagrams explaining the workings.