Originally Posted by crystalworks

With your group of problems, I'd be inclined to agree on needing a trans (new/rebuilt). Will definitely be the quickest in times of turnaround. If it was just one problem with the trans you might be able to do a parts repair on yours. Or you could pick up a used trans for $500ish and roll the dice that it doesn't have the same problems your current one does.

Upallnight likes to insult the other members on the board for wanting to try to repair things by starting with cheaper fixes (even if they don't solve the issue)... but I've always thought all parts fail eventually (and these X5's are at least 12 years old now), and I have no problem using the shotgun approach if it means I can prevent a future part failure/downtime even if it doesn't fix my current problem. He gives out very good advice and knowledge, but you'll have to learn to disregard the "extraneous" material.