One more link This one is from a guy in Dallas that shredded his belt just like you and he is back up and running now https://landroverforums.com/forum/lr2-35/2008-lr2-steering-pump-replacement-complete-tutorial-extensive-93453/ I call the devoted 3.2 owner that help each other out FRIENDS OF PAUL H...

If the pulley in the picture is working it will spin easily in one direction and not at all in the other direction.

You are correct it is gear driven but it should freewheel like a bicycle

Good luck

Paul

Is this supposed to turn freely? Because it doesn't. 🤬🤬🤬🤬🤬🤬🤬🤬👺 The Alternator will freewheel when the drive pulley is spinning slower then the Alternator. That way the spinning mass of the Alternator does not stress out the other components. Less vibration, Longer belt life and saves some fuel.

Result!!!!! Well Done As for the Thermostat most of the parts are the same for the S80 LR2 and XC90 The exception being the small hose in the middle of the manifold at the top Take a look at this link https://www.freel2.com/forum/topic32245.html ( Edit: Broken link repaired ) You may be able to do t...

I am no expert on these codes, but codes can cascade from minor to major Canbus problems. I would expect others to comment.
volvolugnut

Any chance you have the original battery in the vehicle? If yes, I would seriously consider replacing that as a first step given the nature of your faults. You can tell by the Volvo mark on the battery plus a WWYY code is stamped on the stop of the negative post. If this we happening to me, that's t...

I would check ground straps and all power wires. A power issue can cause everything you mention. Ground straps are my first guess due to the otherwise working nature of things.

Thinking some more it would not hurt to check some of the more exposed modules to see if they have been compromised by the elements. A couple of slightly corroded pins could also cause your issues.