Hi all . A newbie here and this is my 1st post. I am the proud new owner of a misused Legacy and intend restoring her as close as possible to original specs. ( done 180,000 k's ). My tranny has early stages of the 4WD Solenoid starting to fail and the Oil Cooler filter is leaking somewhere ( trans type: TZ102ZB1AA ). Being a Ford convert I'm trying to learn as much as I can - but am getting the dreaded '404' message on some of the forum links. Could someone please explain what is the 4WD solenoid for and where is it.
Also, as I understand it there are 2 different oil used in the 4EAT tranny but cant find out what and how to change them ( I'm prepared to put up with the minor leak in the oil cooler filter until more funds become available so I want to top up whichever oil it is that uses this part ).
What links are dead? I temporarily removed all the factory scan information on my server....so they may be mine.
The duty c solenoid adjusts line pressure sent to the rear clutch packs. This in turn varies the amount of torque split ie 90/10 vs 60/40, etc.
What symptoms are you having? I'd first check that all the tires are the same brand & wear characteristics. Also check tire pressure. I'd recommend changing the transmission fluid. Old fluid can cause torque bind issues.
Yes there are two different oils. You have the front differential that uses a differential oil 80w90 is typical, and you have the automatic transmission oil. You should use dextron III.
On the right hand vehicles, the dipstick for the transmision should be in the passneger side, and the dipstick for the differential should be on the driver's side.
Josh,
Thanks for the quick reply. Yup - its your scan alright so I can wait.
The symtoms appearing:
Travelling at 100kph @2800rpm noticing a slight 'jerk' or brief 'null-spot' in action.
Waiting until temperature gauge reads normal operating temp on start up before moving - otherwise it wont engage from 2nd to 3rd/4th. When its cold the car will move and engage gears only to 2nd and then goes for 3rd but just over-revs. ( We are coming out of winter here - it didn't happen in the summer?? )
Going to buy that tran oil asap - thanks again for your help.
Legacy777 wrote:The duty c solenoid adjusts line pressure sent to the rear clutch packs. This in turn varies the amount of torque split ie 90/10 vs 60/40, etc.
I thought the 4EAT could only go 90/10.
Manarius wrote:The Neo-Cons would call me a defeatist. I'd call me a realist. I'm realistically saying that a snowball has better chances in the blazes of hell than democracy has in Iraq.
1995 Polo Green Subaru SVX (189k miles - 08/2007-Present)
Legacy777 wrote:The duty c solenoid adjusts line pressure sent to the rear clutch packs. This in turn varies the amount of torque split ie 90/10 vs 60/40, etc.
I thought the 4EAT could only go 90/10.
90/10 is the "standard" torque split if you were cruising down the highway. Other then that, torque split can go all the way to 50/50
Be careful!!! There's a problem with changing the atf in trannies that haven't been changed in a long time. Dirt and grime accumulate to the innards and fill in the micro cracks that develop over time. New atf has cleaners that dissolve the dirt and open up the micro cracks. This leads to tranny death. This was explained to me by a tranny shop owner who deals with MANY people who get a flush and fill and have a blown/slipping tranny a few months later.
That's what happened to me in my 93. While I couldn't walk after totaling my Festiva, a friend offered to change my oil for me. Nice guy. Except he drained my tranny instead. We walked over to the tranny shop next door and got new fluid, and that's when I talked to the owner. No more than 3 months later the tranny started to whine and slip. It worked fine before changing the fluid.
I swapped the tranny out with one from a junkyard, filled it with new ATF, and drove it for three or four months. The tranny was starting to show some slippage and whine, just like before. That's when I started to consider selling it. No more than a day after putting the sign up the radiator blew up. I popped the head gaskets while installing the new radiator. That's how it became my parts donor.
Bottom line - automatics suck, especially if they haven't been cared for. If you want to keep it, look for detergent - free ATF. Hope you read this in time.
