I have a 1990 sub leg and it only has 84,000 miles on it. it is an AWD. automatic. when the front wheels start spinning the rear ones are suppossed to kick in making it the 4 wheel drive, well, the don't. it stays in front wheel drive all the time, and only the front right wheel pulls and i get stuck everywhere. I need to know what is wrong with it, what do i need to check. I'm a mail carrier and I use this car so I need it fixed. the trans shifts fine.
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Re: 1990 subaru legacy 4x4 problems
This transmission has a 4 wheel drive unit on the back of the trans this has a known fault which this unit could have, take to your local trans specialist and he will be able to verify and qoute, You also could check the fuse for the 4 wheel drive. normally in the fuse box under the bonnet marked 4wd or awd, this also would cause your fault.
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easiest way to tell if it is 2 wheel or 4 wheel is look under the car.
From the front of the vehicle just off center (could be left or right) there will be a differential. (much like what you see under the rear of a pickup truck. If you see this it's a 4wd or awd.
The difference between awd and 4wd is-
4wd is either front or rear wheel drive with the ability to (now days) push a button and "lock in" the other axel.
Awd is at all times, all 4 wheels are working together to move the vehicle.
This recently happened to my 98 Subaru Legacy Outback.
My problem is in the rear differential. May be the same for you.
When making a turn, the car sounds like a Star Wars T.I.E. Fighter. The outside wheel is not turning fast enough to keep up with the inside wheel or vice versa. AWD is disengaged and car is currently operating on Front WD. I was told this is fine to drive this way.
Binding on tight turns are usally caused by a fault in the transmission tail end. You can check in the following order. 1. Trans fuel level/ Change several time to flush the system.. 2. Speed Sensor that sits on top of the tail end. 3. Duty-C Solenoid inside the tail end 3. Clutch Pack
Did you know that there is a fuse under hood on Passenger side that I have seen people put the fuse in the missing spot. Problem is it is only for towing the car. Remove if fuse is present and see if it fixes your problem.
This problem is usually caused when the transfer solenoid/valve assembly goes bad, it's located in the transmission extension housing & needs to be replaced. it can be done without removing the transmission.