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A/C Performance

RamCares

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New to the group.
2019 Cummins 2500
AC does take a long time to cool down. Also have a noise like the outside/recirculation door opens up on its own and makes a lot of noise. Does this TSB address that as well?
Hi Jwgmn, we would be happy to look into this for you! Please follow up in a private message with your VIN and mileage so that we can take a look at this for you.

Michelle
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Jwgmn

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Hi Jwgmn, we would be happy to look into this for you! Please follow up in a private message with your VIN and mileage so that we can take a look at this for you.

Michelle
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Michelle

could you send an email address so I can contact you directly?
 

RamCares

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Michelle

could you send an email address so I can contact you directly?

Our team works best through private message and we are happy to work with you there! Just send us a PM with some additional details about your situation so we can determine how best to proceed. Otherwise, if you'd prefer to speak with an agent over the phone please contact us at 866-726-4636.

Hannah
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NewRam92

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I just started having the random increased airflow on passenger side only last week...is that what yours is doing? I've got a 2020 1500
Mine does that too, I read on another thread that it's normal and has to do with the truck attempting to maintain a constant cabin pressure - makes sense to me. If you have an influx of air coming into the cabin and it's sealed off, every once in a while the pressure will have to be released. That's the sound of the whooshing noise on the passenger side intermittently during long drives. I've noticed that when I drive with the windows/sunroof cracked this doesn't happen.

Maybe I'm totally wrong, who knows...
 

Old Ram

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Mine does that too, I read on another thread that it's normal and has to do with the truck attempting to maintain a constant cabin pressure - makes sense to me. If you have an influx of air coming into the cabin and it's sealed off, every once in a while the pressure will have to be released. That's the sound of the whooshing noise on the passenger side intermittently during long drives. I've noticed that when I drive with the windows/sunroof cracked this doesn't happen.

Maybe I'm totally wrong, who knows...
The vehicle has vents in the cab called "exhausters" that let air flow freely out of the cabin, if they were not there the doors wouldn't shut without great force and the windows would blow out if it did..
When you set the system to fresh air it allows outside air in pushing the stale air out through these vents
 

Jwgmn

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When it’s in recirculation mode I feel like it should never allow outside air in. None of the other vehicles I’ve owned in the past have ever done this in recirculation mode.
 

Old Ram

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When it’s in recirculation mode I feel like it should never allow outside air in. None of the other vehicles I’ve owned in the past have ever done this in recirculation mode.
It shouldn't, there is a door at the cowl (usually passenger side above the air box) that shuts and blocks off the flow of air to the system/blower from outside, if you still have air flowing in the door is bad, the control motor or a control module/software issue
 

gorilla57

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It shouldn't, there is a door at the cowl (usually passenger side above the air box) that shuts and blocks off the flow of air to the system/blower from outside, if you still have air flowing in the door is bad, the control motor or a control module/software issue
This is a known issue with Jeeps, so I'm guessing the trucks do it too. The "engineers" think that the cab needs to be flushed with outside air every once in a while to "prevent CO" accumulation. So, they have in the software to open the recirc door at set intervals. Well, in the truck, I could see this as an reason to open the recirc door. But.....in a Jeep that doesn't seal up at all, there is plenty of airflow. :ROFLMAO:
 

SCasey89

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Does anybody have a whistling/air buffeting sound (trying my best to describe it haha) that comes from one of the components under the passenger side dash? No matter what speed setting I have the blower on, I get a lot of excess air noise. When I turn the blower completely off I get a whistling sound from the same area. And the sounds are more pronounced at speeds of 40 plus.

It just started happening a few weeks ago and now I can’t not hear it every time I drive the truck.
 

Neurobit

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Does anybody have a whistling/air buffeting sound (trying my best to describe it haha) that comes from one of the components under the passenger side dash? No matter what speed setting I have the blower on, I get a lot of excess air noise. When I turn the blower completely off I get a whistling sound from the same area. And the sounds are more pronounced at speeds of 40 plus.

It just started happening a few weeks ago and now I can’t not hear it every time I drive the truck.
Could be the seat ventilation perhaps? They’re pretty loud.
 

NewRam92

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Does anybody have a whistling/air buffeting sound (trying my best to describe it haha) that comes from one of the components under the passenger side dash? No matter what speed setting I have the blower on, I get a lot of excess air noise. When I turn the blower completely off I get a whistling sound from the same area. And the sounds are more pronounced at speeds of 40 plus.

It just started happening a few weeks ago and now I can’t not hear it every time I drive the truck.
Are you sure it's coming from under the dash? My passenger side door was sticking out slightly from the rest of the body when closed. It made loud air buffeting noises (almost like a window was cracked) at higher speeds and during strong cross-winds. I took it to the dealer and they adjusted the closer on the door to sit more flush. It made the sound better 90% of the time, but I still get it when it's windy. It's 100% because of a small air leak between the door and body weatherstripping. I bought more to fix it, but haven't gotten around to it lately. I posted a video on another thread about it:

 

RamCares

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Does anybody have a whistling/air buffeting sound (trying my best to describe it haha) that comes from one of the components under the passenger side dash? No matter what speed setting I have the blower on, I get a lot of excess air noise. When I turn the blower completely off I get a whistling sound from the same area. And the sounds are more pronounced at speeds of 40 plus.

It just started happening a few weeks ago and now I can’t not hear it every time I drive the truck.
Hi @SCasey89, we want you to know that our team is available to you via private messages for assistance! If at any point you decide to address this with your Ram dealer, our team is just a private message away and more than willing to escalate a case on your behalf to a specialist for further support through that process.

Kathryn
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strychnine

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Wondering if I need to get the TSB done. I have not been happy with my A/C performance since buying the truck. I have an early 2019 Ram 1500 build. I trialed running the A/C on the lowest temperature setting on both "auto" and manual at maximum A/C. The lowest I could get the air temperature out of the vents was 53 degrees measured by putting a thermometer in the vent. The temperature outside was ~77-78 degrees during the test. The cab temperature before the test was ~100 degrees since I'd left it in the sun for a couple of hours. Normally, it takes 5-10 minutes for it to become comfortable in the cab if it's a summer day.

Is the TSB a reasonable approach here? I took the truck in and mentioned it during a routine oil change and they said they did not see problem with the A/C at the time, although the outside temp was ~50 degrees when I had the oil change.
 

Neurobit

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Wondering if I need to get the TSB done. I have not been happy with my A/C performance since buying the truck. I have an early 2019 Ram 1500 build. I trialed running the A/C on the lowest temperature setting on both "auto" and manual at maximum A/C. The lowest I could get the air temperature out of the vents was 53 degrees measured by putting a thermometer in the vent. The temperature outside was ~77-78 degrees during the test. The cab temperature before the test was ~100 degrees since I'd left it in the sun for a couple of hours. Normally, it takes 5-10 minutes for it to become comfortable in the cab if it's a summer day.

Is the TSB a reasonable approach here? I took the truck in and mentioned it during a routine oil change and they said they did not see problem with the A/C at the time, although the outside temp was ~50 degrees when I had the oil change.
Yes, the TSB def made a difference for me. I too have an early-build 2019, and my AC was subpar as well.
It is a lot colder now, which cools the cab faster. Very happy I did this. Night and day from before.
 

strychnine

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Yes, the TSB def made a difference for me. I too have an early-build 2019, and my AC was subpar as well.
It is a lot colder now, which cools the cab faster. Very happy I did this. Night and day from before.
Appreciate it! I'll follow up with my local service department again since the first time I mentioned it with them. Hopefully they will be able to see the same results that I am getting now that it's warmer out.
 

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