So I have a 91 Legacy wagon AWD, 2.2, 5spd 270k miles. Non Turbo, No ABS.
This car has drivin like a champ the whole time I have owned it. I was driving in first gear at about 3000 rpm on a bumpy dirt road. No prior warning or noise. I was going about 15 miles an hour and all a sudden the engine revved up as if I was down shifting from a high speed to first gear. I immediately pushed in on the clutch and at the same time the wheels locked up and the car came to a sliding stop.
This was all accompanied by a loud single knock when the wheels locked up.
It wasn't the pushing in on the clutch that locked everything up.
It didn't feel like I just put the ebrake on, it felt more like all four wheels locked up but I could be wrong and it might have just been the back.
At this point I am on a slight downgrade. I couldn't shift out of first gear. When I tried to drive it would just kill the engine. I finally just gunned it and it unlocked and started driving. It drove like there was no problem at all. I jacked it up and I looked at all moving parts and I see no issue. I drained the tranny and the rear diff and checked the plugs. No metal shavings just the normal amount of very fine metallic dust on the magnet. I put my finger inside both drain plug holes and i didn't feel any metal shavings. I have changed all the cv joints recently so it wouldn't be them locking up. I have also put in a new clutch (kit). Any ideas? Has anyone ever had a rock bounce up into the drive shaft and lock the wheels up? :-\ Anything helps. Thanks.