Hvac intake cleaning - Ford Powerstroke Diesel Forum
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post #1 of 17 Old 07-01-2017, 02:53 PM Thread Starter
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Hvac intake cleaning

Anyone know how to clean the hvac intake and tract to get rid of that dusty smell? There must be a way since ford didnt think it was important enough to put a cabin air filter in with these trucks. Thanks in advance
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post #2 of 17 Old 07-05-2017, 08:45 AM
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awesome question
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post #3 of 17 Old 07-05-2017, 08:31 PM
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Sure. Remove the dash and go to town.


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post #4 of 17 Old 07-06-2017, 04:33 AM
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I was thinking maybe a lower connection could com apart to "Bomb" the system? no?
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post #5 of 17 Old 07-06-2017, 05:32 AM
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I use a spray called Ozium. Just turn the a/c on max with recirculated air on and spray under the passenger side dash. It'll suck it up.


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post #6 of 17 Old 09-05-2019, 05:44 AM
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I know this is old, but I'm also searching for a way to get rid of that nasty musty smell in the HVAC. My other vehicles I can turn the air on full blast, and spray some lysol outside, just under the winshield cowling and that'll suck it inside and recirculate it to get rid of the smell for a few months. Didn't do anything on this truck.

So where can we spray something to recirculate the whole interior and kill the nasty smell in the vent system?
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post #7 of 17 Old 09-05-2019, 06:41 AM
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Ours don’t carry a cabin filter so a bad smell is probs related to an actual containment somewhere in or along the system
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post #8 of 17 Old 09-05-2019, 12:29 PM
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Yeah, it happens to all my vehicles, new (with a cabin filter) and old. Usually just excess moisture in the vents that builds up over time...especially from alot of summer A/C usage. Where is the intake for the recirculate then? Is it on the passenger footwell area? Just want to know where I can spray lysol to clear it up. Works great on my other vehicles.
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post #9 of 17 Old 09-05-2019, 03:04 PM Thread Starter
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Air flows externally through the drivers side cowl to the passenger side then into the system. Since the openings are on top and in front of the windshield where it is a pressurized area, dust likes to get into the cowl area. I now shoot water into the area every wash to help wash away dust and dirt. Then internally on recirculate the air is sucked from driver and passenger side footwells
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post #10 of 17 Old 09-05-2019, 03:34 PM
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Remove the blower fan and clean the compartment out, prolly surprise you what you see in there -- run a water hose in there, just be careful not to bend the evaporator fins

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