My over drive light flashes constantly and I diagnoised the trans. And it showed nothing was wrong. Trans show no poblems, but could this mean I need to change my trans fluid? Tho, it does look clean.And what kind on fluid do I used on my rear diff., cause my car does have LSD.?

what code did you get? i believe sometimes you can get codes that have nothing to do with the transmission. sometimes it could something to do with the engine.

The trans didn't throw any codes.justed blink rapily meaning everythings fine.

Then pull out the jumper wire.

the O/D light flashes when the car is running? but when you tried to get the codes it didnt give any? that is quite odd.

yep, thats what happend. I read in a old post a guy with a mk4 had the same problem and just changed the fluid in the trans and the poblem stoped.