I just got a 87 subaru dl wagon a couple of weeks ago. All i had to do was replace left timing belt and tensioner. I got that accomplished after several tries. The carb. needs to be rebuilt, and i've got to put a new oil gasket on, Ive got both kits and these task are in the process. Yesterday i used the 4 wd to come up my driveway. The driveway is rough and you have to have a 4 wd to get up and down when wet. Anyways to much info i guess. My problem is this morning when i got into car and tried to back up gearbox/trans is just kinda grinding didn't really give the car a chance to move i was afraid i'd tare something up, My trans is a 5 speed manual rear wheel drive with optional 4 wheel drive i think. Now I re-engaged 4 wheel drive and car drove just fine, no grinding, all wheels pulling, etc. Drove it around trying to switch back and forth but no luck, when it comes out of 4wd it just wants to grind not pull. Has anyone had this problem before, or any suggestions? Thanks this is my first foreign car I love it, but i'm used to working on domestics and this is a whole new ballgame. Overall it seems really easy to work on but parts seem hard to find and expensive. So I don't have the option of trial and error. I just don't want to break something i can't replace or find, no junkyards around with motor of trans parts for at least 100 miles and even those are limited. Sorry bout the long post any help will be greatly appreciated. I'm just really falling for the car and don't want to hurt it.