Heater is not blowing very strong.

Post by **tboothe33** » 13 Feb 2019, 13:57

chrism wrote: 13 Feb 2019, 11:12
tboothe33 wrote: 13 Feb 2019, 10:34 I had the heater core replaced in 2017. Well, wouldn't you know, I hit a pothole 2 weeks ago, and the heat went out again. Since my heater core is relatively new, is there something that could have come loose when I hit the pothole? It worked fine before I hit it.
I wonder when they replaced the core if they disconnected the little linkages that open/close the blend doors and didn't get them reconnected properly. Then when you hit the pot hole one of them jarred loose???

They're the two flat metal "arms" in this photo:

download/file.php?id=3384

Did you lose heat on both the driver's side AND the shotgun (passenger) side?

Yes, both the drives and the passenger side. The car itself heats up fine, but no heat coming out. When I switch from "auto" so front fans it makes a really loud kind of noise.

Post by **oragex** » 13 Feb 2019, 14:21

Each side has its motor and linkeage, don't think it's a motor issue. Maybe the blower motor has an issue? Does the noise come from behind the glove box?

Post by **cn90** » 13 Feb 2019, 21:06

The arm that moves the flap is Volvo PN 9171544 ($25 from Volvo dealer or online).

I detailed my experience when replacing the heater core in my 2005 XC90 2.5T in the DIY below.
You can easily inspect the arm with minimal tool:

viewtopic.php?t=82726