Hello everyone! This is my first post after days of reading, maybe you guys can help.

So I bought a nice 99 B5 1.8T FWD with trans issues for a good deal. I knew it had trans problems so I was ready for it. Well I managed to drive it home, and it barely made it. It was sporadically shifting and then threw itself into limp mode. Next day to take it to the shop, it just stopped and free reved.

I purchased a used trans from a Passat. Same DDT code and all. Install it, no problems at all. Go to drive it and the speedo doesn't work. Not a huge deal. It drives perfect, for about 60 miles (if that). Then out of nowhere while on the free way it goes into limp mode. I pull it off the interstate. Turn it off, then back into reverse and nothing. Just free revs. I manage to get it into drive and it makes a horrid sound, grinding almost. Than it goes back into 4th and drives back home.

I've hooked up vag-com, the only code it throws is for the speed sensor.

So the point I'm at now, before I throw another trans in, is two separate trans, same exact problem. Although the second trans I installed shifted smoothly and perfect. No slipping at first or anything. As it stands now, it won't engage reverse. Starts up (not in limp mode) and than will go into limp mode after trying to figure itself out for gear changing purposes for about 100 yards of driving. What could make it go from driving perfect to literally driving like a destroyed trans?

Any help is greatly appreciated!


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