A/C outside air intake

[Justin Everett]

I've tried search with no luck. Can someone tell me where the a/c pulls in air from the outside (when the ac is not on interior circulation mode)? Trying to remove smoke smell and want to shoot some ozone or Lysol through it. Thanks!

 

[NoveskeFan]

I'm pretty sure it draws air in from the grated wiper cowl area. Might also check/change your cabin filter, if your truck has one. If your truck doesn't have a cabin filter, you can buy the kit that includes the filter and door.

 

[Justin Everett]

Thanks. I changed the cabin air filter with a “baking soda” model. I figured it might come in from that area, any idea what side?

 

[NoveskeFan]

Thanks. I changed the cabin air filter with a “baking soda” model. I figured it might come in from that area, any idea what side?

I think passenger side, but not 100% sure. I just tried a quick search online and it must be a closely guarded secret

 

[NoveskeFan]

Found a post on CumminsForum.com dealing with a 3rd gen RAM showing it on the passenger side; believe it's similar for 4th gens. Hopefully it's ok to link this:

https://www.cumminsforum.com/forum/3rd-gen-non-powertrain/2386730-cabin-fresh-air-intake.html

 

[madtrucker2016]

Thanks. I changed the cabin air filter with a “baking soda” model. I figured it might come in from that area, any idea what side?

Geno's garage sells the filter for the outside cowl ,It covers the whole windshield. Don,t know how it attaches but it cost 59.00 bucks.

 

[NoveskeFan]

Geno's garage sells the filter for the outside cowl ,It covers the whole windshield. Don,t know how it attaches but it cost 59.00 bucks.

Didn’t know such a thing existed, pretty neat.

https://www.genosgarage.com/product/cff-dg-19009k/interior-replacement-parts

 

[Justin Everett]

I think passenger side, but not 100% sure. I just tried a quick search online and it must be a closely guarded secret

My searches have come up with nothing. Even on a no wind day, I sprayed in the direction of the cowl to see if I could notice any movement, nothing.

 

[crash68]

My searches have come up with nothing. Even on a no wind day, I sprayed in the direction of the cowl to see if I could notice any movement, nothing.

As stated previously, the outside air comes in through the grated area below the windshield. You need to use smoke from a cigarette/cigar, snuffed out match, incense stick, etc to pick up the air flow. I know with my '15 that the system will go into recirculation if the AC is on and I turn the fan to 7

 

[Pepper77]

There's a switch- deep on the other side of the glove compartment. You take the glove compartment door off- clips on each side. https://youtu.be/8UBvfzyZYRA?si=4z1Z-pHADvv-xb64 this fella describes it better than I can. I'd wager its what we're after. Had the same problem with my 2005 dodge ram.