AC Issue

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Maverick 2021

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I figured I would put the word out on a resent issue that was discovered on my truck. Most of you I am sure take your truck to get the routine maintenance done for oil changes and rotate tires.

Well my lovely truck threw up a silent code for AC Blower problem on 2021 Ram. I would have never known about this if my advisor wouldn't have told me about it when I took it in for my 3k-5k maintenance.

So keep your eyes open about this cause apparently it's a common problem from what my advisor has told me with the new trucks.
 

turkeybird56

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Hmmmm, not heard many blower issues. AC been more of a problem with the New DT trucks from 2019 and about early 2020 builds. I know because I have an early 2019 DT. But who knows, with the lack of QC these days, ne thing is possible.
 

RamDiver

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I figured I would put the word out on a resent issue that was discovered on my truck. Most of you I am sure take your truck to get the routine maintenance done for oil changes and rotate tires.

Well my lovely truck threw up a silent code for AC Blower problem on 2021 Ram. I would have never known about this if my advisor wouldn't have told me about it when I took it in for my 3k-5k maintenance.

So keep your eyes open about this cause apparently it's a common problem from what my advisor has told me with the new trucks.

Did you observe any operational or performance-related issues with the AC?

The AC system on my '21 is like a meat locker. I measured 32F at the vent while having the recirculate enabled.

.
 

tul9033

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Did you observe any operational or performance-related issues with the AC?

The AC system on my '21 is like a meat locker. I measured 32F at the vent while having the recirculate enabled.

.
How long does it take to get there when the cab is hot? I'm seeing about 15 min before mine drops below 80F in the cab on a hot day.
 

brian42

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It takes my "late" '19 awhile to cool the cab. I roll the windows down for the first minute or two when driving and that really speeds up the process.
 

tul9033

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It takes my "late" '19 awhile to cool the cab. I roll the windows down for the first minute or two when driving and that really speeds up the process.
Thanks for the reply, mine is also a very late July 2019. I've been turning off the recirc for the first 5 mins and that does help a bit. I know others have messed with the hot water line to the heater core and I believe there is a TSB for this issue as well.
 

KKBB

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My 2019 2500 is the worst A/C I have had in a vehicle. I basically keep it maxed out all the time and it is only comfortable for me. All my other vehicles would freeze you out eventually and would have to lower the fan speed or take the thermostat up a bit warmer or both, but not this truck.
 

06 Dodge

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I'm taking my 22 in on the 15th due to the fact I can only get a vent temp of 48 degrees grrr my old 2006 before I sold it in January would get the A/C air down to 38 degrees only 3 degrees warmer then when it was new, I wonder if I get told its normal when it goes in being the service writer acted a bit strange when setting up the appointment...
 
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RamDiver

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How long does it take to get there when the cab is hot? I'm seeing about 15 min before mine drops below 80F in the cab on a hot day.

I haven't tested to see how long it takes for the temperature to drop.

IIRC, the outdoor ambient temperature was about 84F. After 17 minutes of driving with the recirculate enabled, I was measuring 32F at the vent and the interior was very comfortable for an individual who's normally thermally challenged. :cool:

The outdoor temperatures aren't as hot here as in the Southern States. We usually see about 85F to 90F during a typical summer day, once in a while it spikes to about 95F to 100F or slightly higher.

When I get into my truck after it's been sitting out in the sun for hours and it's nasty hot inside, I usually leave the windows down for less than a minute as I'm pulling away. A quick fresh air flush, windows up and recirculate enabled. Within a few minutes the interior temperature is starting to feel comfortable.

I am also very religious with the use of a highly reflective, silver coloured, windshield sun deflector and parking facing into the sun whenever possible.

I'm confident that this process reduces the interior temperature buildup significantly. If you can avoid the temperature rise, you won't have to deal with an excessive heat load and cooking during the recovery period. :cool:

I've heard many complaints about the AC in Ram trucks, mine seems to be excellent and well suited to the ambient conditions here. I would hope that the political BS simmers down soon and I can test my truck's AC functionality in North Florida..

.
 

brian42

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Thanks for the reply, mine is also a very late July 2019. I've been turning off the recirc for the first 5 mins and that does help a bit. I know others have messed with the hot water line to the heater core and I believe there is a TSB for this issue as well.
There is. It's TSB24-001-20 (for '19 and '20 models). I've attached it below.

Even though all that's required is for the customer to complain about poor A/C performance, each dealership responds differently. My dealership insisted on doing a "cooldown test" and it passed...every time. Sure it will pass sitting in a covered maintenance stall first thing in the morning. I opened a case with corporate and they sided with the dealership.

It is a very involved TSB that requires the whole dash and front seats to come out so there's always a risk that it won't go back together as nice as it was when you dropped your truck off. I've also read of dealerships telling people that they won't do it because of the high risk of damage that the dealership will have to eat the repair on (this was mostly when it first came out and was new to everybody).

I dropped my truck off last weekend for some other work and another attempt at the TSB (3rd or 4th try). He told me that it does pay well to do and takes 4 days to accomplish for all but his most seasoned mechanics.

As for the heater valve/clamp I'm not a fan. I did that for a decade on my last truck and am not going to do it on this one.
 

Attachments

  • TSB 24-001-20_A-C.pdf
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Sherman Bird

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I'm taking my 22 in on the 15th due to the fact I can only get a vent temp of 48 degrees grrr my old 2006 before I sold it in January would get the A/C air down to 38 degrees only 3 degrees warmer then when it was new, I wonder if I get told its normal when it goes in being the service writer acted a bit strange when setting up the appointment...
You are comparing a truck made 16 years ago to a new one? The difference is in not only the type of refrigerant is used, but the system design as well. I had an Olds Cutlass 30 years ago that put out 39 degree vent temps.... but I don't compare it's performance to my current daily drivers, which neither is a GM product, and one is Asian.... and it has the better HVAC system!
 

KKBB

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You are comparing a truck made 16 years ago to a new one? The difference is in not only the type of refrigerant is used, but the system design as well. I had an Olds Cutlass 30 years ago that put out 39 degree vent temps.... but I don't compare it's performance to my current daily drivers, which neither is a GM product, and one is Asian.... and it has the better HVAC system!
Technology shouldn't go backwards. If we are comparing anything today and something 16 years ago...there should be no fee reason something made 16 years ago should outperform something made today...IMO
 

Sherman Bird

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Technology shouldn't go backwards. If we are comparing anything today and something 16 years ago...there should be no fee reason something made 16 years ago should outperform something made today...IMO
I remember the early years of R134a being used in cars. Those systems failed to keep up in performance as the R12 units had, at least until systems were re-engineered to the difference in properties of the differing refrigerants.

The BS reason we peons were handed was a noble enough sounding one. "Ecology" was the mantra. Truth was, Dupont lost their patent on the R12. I'm a cynic. I believe the pragmatic line of reasoning far more than the "noble" concept of "save the planet".
 

Sherman Bird

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Technology shouldn't go backwards. If we are comparing anything today and something 16 years ago...there should be no fee reason something made 16 years ago should outperform something made today...IMO
Can you say "Rush to market"? After a corporation spends into the many millions on new technology because big gummint says they must, they need to begin to recoup their extreme cost. This is why one should never buy the first year model of any new technology.... cars especially. Then, they do all sort of "research" and market study to gauge just to what minimum level they may incorporate to stem their financial bleeding. I used to hear the GM mucky mucks cry in their beer about how the big corporation was hemorrhaging money.

As the new yf1234 refrigerant continues to infiltrate the market, we shall become accustomed to it.... just like we did with R134a.
 

Wirerat

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My 2017 ram would freeze my fingers. Like a refrigerator.

Now, my 2020 doesn't get that cold however, it does cool off the truck. It was 101 yesterday and comfortable in cab within 10 mins. Really glad I ran from that black laramie sport the dealer was pushing me towards.
 

Sherman Bird

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My 2017 ram would freeze my fingers. Like a refrigerator.

Now, my 2020 doesn't get that cold however, it does cool off the truck. It was 101 yesterday and comfortable in cab within 10 mins. Really glad I ran from that black laramie sport the dealer was pushing me towards.
Think in terms of air volume in the truck. That cavernous amount of air takes far longer to get cool that either a passenger car or a single cab truck.... so there's that! ;)
 

06 Dodge

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You are comparing a truck made 16 years ago to a new one? The difference is in not only the type of refrigerant is used, but the system design as well. I had an Olds Cutlass 30 years ago that put out 39 degree vent temps.... but I don't compare it's performance to my current daily drivers, which neither is a GM product, and one is Asian.... and it has the better HVAC system!
Why yes I am, as I see it their is no god reason for a 16 year old Dodge AC system that needed work ( broken off blend door so no way to stop incoming fresh air) putting out colder vent temps then my brand new RAM AC system. I checked vent temp again yesterday it was only 75 degrees outside, after running the AC system for 20 minutes the AC vent temp was again 48-50 degree temps, that is very poor IMHO.... BTW they both use R134a Freon...
 
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