Trunk Ventilation

On the passenger side of the trunk, I have a vent with 2 rubber flaps that are on the outside allowing air to exit but not enter and I have 2 rubber hoses/ports from outside the fender to inside the drunk.

What are these for?


Our trunks are not sealed off? So it's perfectly safe to assume our trunks are filled with exhaust gases?

I will get some pics up of what I am talking about soon.

As far as I know there's 1 hose for the antenna and since you have a sunroof there's a hose for it. No idea where the sunroof drain is though.

o shoot. I wasnt counting that one. I was counting the two I see by the vent with the rubber flappers. I will get pics soon. I have to assume our trunks are exposed to exhaust fumes and arent totally sealed off?

charlieRobinson wrote:

o shoot. I wasnt counting that one. I was counting the two I see by the vent with the rubber flappers. I will get pics soon. I have to assume our trunks are exposed to exhaust fumes and arent totally sealed off?

The flaps are to let the pressure out when you shut the trunk! I'm not sure about the hoses you're referring to though!

The flaps are there because the cabin HVAC is a "Positive Pressure" system. I believe that even when it's "Off" the fan still runs slowly. The flaps in the back give the air pressure a way out. Not a place for exhaust to get in.
There is also a drain hose for the power antenna.

So if the flaps let pressure out then its safe to assume the trunk is sealed air tight, right?

I found out about those vents once when pressure washing inside the wheel wells. Accidentally had the nozzle stuck through it and filled the trunk.

^^^lol thats a good one!

I had my back seats out of the car because of the subwoofer install and i left them out. 

But when I have the windows rolled down, it smells like exhaust is being pulled into the cabin.

If the trunk isnt sealed off then it makes sense, i probably should put the padding and carpet back in the trunk and put the back seats in to seal it off?

But if the trunk is truly sealed then none of that should matter?

Windows down creates funny air pressure. With the back seat removed, it's possible you are drawing air in from other places as well. The flaps theoretically should close on suction, but time may have permanently warped them open a little.

With the windows down and rear seat back removed, it smells like exhaust? Try putting the seat back in again... Why would you leave that out?

The trunk is not sealed airtight. Air can move through the seat back (also not airtight) and out the flaps. Maybe the trunk weatherstripping is worn too, allowing exhaust fumes in.

I put the back seat in. I just left it out because i dont use it and it was out from the subwoofer install.

i wish there was a good way to see where the big leaks are.

Like, put a couple smoke bombs out by the exhaust tips then turn a vacuum on inside the cabin.

See where the smoke comes in through?

just spit ballin here..