Mike, I have a Subaru Tribeca B9. THe passenger side blows cold air and drivers is hot.

Maybe you shut the heater off on the passenger side.

There is a switch that controls both drivers and passenger heaters. One might be off.

Misfire can create a lot of heat. Especially in the catalytic converter. usually a crank sensor results in no start but it affects the ignition timing. What are the exact codes?

Diagram reference number 1 in the image below:
"" Fitment: 2006 SUBARU B9 TRIBECA - 4 door

Application Notes:

Category: Electrical. Charging and Starting

SubCategory: Alternator / Generator and Related Components

Position: General

Part Number: 809221090


This is a Serpentine Belt that fits the 2006 SUBARU B9 TRIBECA - 4 door with the EZ30D engine. The Serpentine Belt is designed by SUBARU to be part of the Electrical. Charging and Starting-Alternator / Generator and Related Components. The Serpentine Belt has a position on the vehicle of General. The 2006 SUBARU B9 TRIBECA Serpentine Belt is a factory made SUBARU OEM part and it comes with a 12 month 12.000 mile warranty (parts only). Do not be fooled by an aftermarket SUBARU B9 TRIBECA Serpentine Belt! Buy a factory SUBARU part and receive peace of mind!
This factory part has a part number of 809221090. "

Get this manual online at www.reliable-store.com and get complete guide on whether to repair or not, service it, and how to repair etc, along with wiring diagrams, electrical diagrams, torque specs, error codes,
everything.

I just spent five hours replacing the passenger side bulb because I did not know to leave the spring alone. I then replaced the bulb and when I went to check the headlight, the drivers side blew out. 5 minutes job turned into five hours.

Most of the time the dash has to come out to access the actuators on the heater box.

you have a shutter no functioning

This means your air conditioner drain tube is clogged. This will take about a hour shop rate to repair or if you look behind the glovebox you will see it. Thanks