It's an incredibly easy fix! It's a little fan inside of the climate control unit that becomes clogged/imbalanced from dust over the years. I've got some pictures of it I can upload, but the actual fix was easy and free.

So, I ripped the trans out, and it's just worn friction material. Time to replace it! Going to get a guaranteed unit and swap it in myself. Steven--That "stuck in 3rd gear" you describe is actually the car's built in failsafe, or "limp mode". It locks itself in one gear to preven...

Hey guys! I'm new here, and have quite a bit of experience working on Volvo's, but I have gotten a fixer-upper S80 for a heck of a price, and it has me stumped! There will be a link to a youtube video of the car acting up after this. Here's the story: The car is a 2001 S80 T6 with the 4T65EV-GT in i...