Great first post, Welcome! You've done just about everything I would suggest, let's see what kind of numbers come back on dash vent temps. My 99 took my cabin up to 80F with outside temp of 0F after 5 minutes if driving so you are cold. I would guess damper door seal failure over plugging of core, e...

Hello Have you already replaced the thermostat? At 130k it's more than time for it. Here's how to verify if it got stuck open (even just partially) https://www.youtube.com/watch?v=gQxQnuU22Ow The heater core can trap air inside https://www.youtube.com/watch?v=ih4HXWrKb_w The heater core may also cra...

If you have full flow on the heater core ( congrats on getting the hoses off, by the way, that isn’t easy) I think that rules out plugged core on the water side. You could pull the core and test the air side for plugging It’s 3.2 hours to remove part 9171503, which is part number for my 2005 V70. Be...

Added year model to title per posting guidelines - this will also help others who can help you!