Hot air blowing underneath dash

[Auctioneer]

I had the holes filled in the front of my 1500xd. We also wrapped the center hump. It made a huge difference. I am very happy.No hot air coming in the cab when going down the road at 50 miles an hour.

 

[mikemdd]

If you remove the filter and plug the filter hole, do you need to always run in recirculation mode?

 

[Big Red]

I think you would have to as you blocked off the source of fresh air into the cab. If it's blocked where is it going to get the air from?

 

[mike r]

I think you would have to as you blocked off the source of fresh air into the cab. If it's blocked where is it going to get the air from?

I think you would have to as you blocked off the source of fresh air into the cab. If it's blocked where is it going to get the air from?

crack the window

 

[Big Red]

crack the window

Ok now let's think about this. I'm getting hot air in the cab because it's coming from the fresh air filter under the hood so I remove the filter then tape it up. I run my A/C and set it on Vents & Floor. So because I taped up the fresh air filter I'm going "crack my window" letting in the hot air from outside? For shits sake people what's wrong with just leaving the fresh air filter alone and use recirculate with your A/C so it doesn't suck air through the filter?

 

[mike r]

Ok now let's think about this. I'm getting hot air in the cab because it's coming from the fresh air filter under the hood so I remove the filter then tape it up. I run my A/C and set it on Vents & Floor. So because I taped up the fresh air filter I'm going "crack my window" letting in the hot air from outside? For shits sake people what's wrong with just leaving the fresh air filter alone and use recirculate with your A/C so it doesn't suck air through the filter?

yes lets think about this u r going to get hot air through that filter in the summer i know i live in az and u will get cold air in the winter this filter is about as good as tits on a bull why polaris put this in is beyond me

 

[OG Toy]

I believe a lot of the hot air is coming from the opening around the filter housing assembly. I would not remove or cover the filter. I just cut a piece of rubber tubing lengthwise and slid it on the opening behind the filter which seals up the opening to the filter housing. I removed the filter only to get easier access to behind the filter. If I get a chance later this morning I will try to get pictures to show what I did.

 

[OG Toy]

First photo is filter in place, red arrow is piece of tubing I slit lengthwise and slid in place. You can see damage I did to tubing with needle nose pliers . Second photo is with filter removed to help see opening and where tubing helps seal the opening. This opening is in line with steering column. Third photo shows openings in piece on firewall. I think some are covering them. They line up with vents on hood. I have no idea why they are there but assume they were engineered for some reason. Hope this helps explain some of this.

 

[mike r]

First photo is filter in place, red arrow is piece of tubing I slit lengthwise and slid in place. You can see damage I did to tubing with needle nose pliers . Second photo is with filter removed to help see opening and where tubing helps seal the opening. This opening is in line with steering column. Third photo shows openings in piece on firewall. I think some are covering them. They line up with vents on hood. I have no idea why they are there but assume they were engineered for some reason. Hope this helps explain some of this.

LOOKS GOOD I SILCONED MINE ABOUT 1 WEEK AGO

 

[Jay B]

First photo is filter in place, red arrow is piece of tubing I slit lengthwise and slid in place. You can see damage I did to tubing with needle nose pliers . Second photo is with filter removed to help see opening and where tubing helps seal the opening. This opening is in line with steering column. Third photo shows openings in piece on firewall. I think some are covering them. They line up with vents on hood. I have no idea why they are there but assume they were engineered for some reason. Hope this helps explain some of this.

Those other openings in your third pic is where the hood latches latch to. I'm sure there is a lot of hot air coming in there but I don't see a way to seal it up.

 

[Big Red]

First photo is filter in place, red arrow is piece of tubing I slit lengthwise and slid in place. You can see damage I did to tubing with needle nose pliers . Second photo is with filter removed to help see opening and where tubing helps seal the opening. This opening is in line with steering column. Third photo shows openings in piece on firewall. I think some are covering them. They line up with vents on hood. I have no idea why they are there but assume they were engineered for some reason. Hope this helps explain some of this.

Now that makes perfect sense to me. I have some self adhesive foam that I think I will butt up against the firewall and wrap around the tube. That should block the opening and prevent the hot air from leaking in. Thanks for the pics!

 

[OG Toy]

Now that makes perfect sense to me. I have some self adhesive foam that I think I will butt up against the firewall and wrap around the tube. That should block the opening and prevent the hot air from leaking in. Thanks for the pics!

I use my Ranger pretty much everyday, but I’ve been busy doing stuff around the property low speed. I just got back from a ride out on the road around 15 miles. Plenty of time for the engine to warm the radiator, but sealing that opening seems to have made a big difference. If you put your hand down on top of the steering column while running there is no hot air moving in as before. You can still feel some heat but no force of air coming up around the steering column.

 

[Woods Ranger]

I didn't have any hose laying around so I sealed the opening around the filter tube with RTV silicone. I stuffed the openings where the hood latches with foam rubber. Seems to work well. Very little air and dust coming in now.

ETA: Was on an 85 mile ride today with the Nokomis ATV Club riding the Harrison Hills trails. Very dusty trails today. Had to use the wipers to clear the dust off the windshield occasionally. After sealing the cabin air filter tube where it comes thru the firewall it's amazing. We did have the AC on but we noticed NO other air or dust coming in anymore. I think we've finally got it. Very Happy! The attached pic is from a FB post. But it shows the opening in the firewall that needs to be sealed up. Made a HUGE difference for us. Hope that helps some of you.

 

[Big Red]

I know many have already done this but I came across this today and thought I would share.

 

[TSkeen]

I have found out that the hot air coming inside under the dash area is coming from the heat off of the radiator and is heating everything up. Follow the tubing (pipe frame) from the front to where it goes into the firewall area (dash). It is a big hole there, which leads into the dash area where heat and dust blows in. Fill it with spray foam and it helps tremendously. You will have to spray a little at a time to keep it from falling out when spraying in. Also run your ac on vent and floor at the same time helps.

 

[Captain Bob]

Are you talking about where the coolant lines go into the tunnel?

 

[TSkeen]

Are you talking about where the coolant lines go into the tunnel?

No, it is up high around the brake master cylinder on the driver side.
Same area on the other side. It is actually the frame tubing. You will have to reach up behind the tubing going into the upper firewall area.