A/C Performance

[ac1dd]

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You're over-simplifying it. Yes, measuring temperature with a 4- 6" probe sticking down into a vent is a good place to measure the coolest air being produced, and the fan needs to be running fast enough to get a good volume-rate of cold air flowing through the vents. But the thing you're NOT taking into consideration is HOW LONG it takes many of these new 5th-generation ("DT") Rams to begin to produce the necessary cold temperatures down inside the vents. The problem with many of these 5th-gen Rams is that the AC system is literally fighting itself, wasting much of the energy it takes to produce the cold air, by having to overcome the heat of the full flow of engine coolant being constantly circulated through the heater core in the cab, and/or the blend doors being poorly programmed. So it takes them forever to achieve cooler temperatures, if they ever do achieve cool vent temperatures, because the AC system is, apparently, also cooling down the heater core with full flow of coolant passing through it at all times.

No I didn't even consider that aspect, because it is "ASSumed" that the unit will start producing cold air within a minute or so, but of course you also have to take into considering "heat soak" which is involved so if the car is sitting outside on such a day it might take more than a minute or two to feel the cool air being generated which will need to overcome that. No you're right I just accept that a standard passenger vehicle even truck will start producing cool air in such a time. Sorry I wasn't clear. I'm thinking that if you measure at the outflow of the condenser (itself, not the vent) the air temp will be around 40-42F after just a couple of minutes or less,hope that is more specific.
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[ConstablePD]

Hello Everyone,

Would you mind sending me a direct message with your VINs. I've been passing them along to an internal resource for further review and don't think I have all of them from this thread.

Thanks!

Jasmine
Ram Social Care Specialist

Is this is recall ? my ac is pitiful. 2019bighorn

 

[securityguy]

Is this is recall ? my ac is pitiful. 2019bighorn

No recall

 

[Grape_Ape]

I'm happy with the performance but I was also curious how my truck A/C performed. So I decided to test it. Ambient temp outside according to the truck was 83*. Set it to A/C at 70* and checked the air with a Thermopop. Was getting 50* out of the vent.



It's an excellent meat probe but I probably could've gotten more accurate results if I used my Smoke and ambient temp probe that I use for smoking meats.

I think I saw a chart where at 70* the vent temp should be 45*. I'm fine with this performance even if the probe is dialed in.

 

[stevestrike]

I think I saw a chart where at 70* the vent temp should be 45*. I'm fine with this performance even if the probe is dialed in.

Try the other (driver's side) vent and see what the difference is. That's what people are more upset about.

 

[TheMadDutchDude]

I must have been really lucky with this truck. Mine is icy after literally a minute of turning on. It’s sat in the shade, but even at 90+ external temps it holds up nicely.

 

[securityguy]

I must have been really lucky with this truck. Mine is icy after literally a minute of turning on. It’s sat in the shade, but even at 90+ external temps it holds up nicely.

Right there with you @TheMadDutchDude ...my RAM is the same way...SUPER COLD SUPER FAST and I am in Florida I think those that are having issues are more the minority than the majority. As with most things on the Internet, folks complain about issues and we don't see the bigger picture. Forums are great for this stuff and a terrific way to get feedback and find people with similar issues and find potential solutions.

 

[KcRay]

So we really do appreciate everyone's input here. The problem with just saying that your AC works great, or is icy or super cold, is just telling us that yours "feels" okay to you. Without checking and revealing your vent temperatures to the community, you are only tell us that you are okay with the way yours is working. No disrespect here, but the perception of cool or cold is so subjective and personal. 50 degrees is not cold to me at all, but to many others it is. If you are blowing low 40s, you have a "unicorn".

 

[securityguy]

So we really do appreciate everyone's input here. The problem with just saying that your AC works great, or is icy or super cold, is just telling us that yours "feels" okay to you. Without checking and revealing your vent temperatures to the community, you are only tell us that you are okay with the way yours is working. No disrespect here, but the perception of cool or cold is so subjective and personal. 50 degrees is not cold to me at all, but to many others it is. If you are blowing low 40s, you have a "unicorn".

I have done testing with a high quality Fluke digital meter (inserted the wire probe down into the vents on both sides) and with outdoor temps in excess of 95 degrees, my RAM gets into the mid-40's and rather quickly I must add.

 

[TheMadDutchDude]

I’ve mentioned in the past that the air coming out of my center vents is in the mid to upper 30s, no mod to the system.

I will check this again in the warmer days next week... if it has changed, I’ll let you all know.

 

[rraulston]

Welcome to Arizona!!! Oh, but its a dry heat..... Every week we have some tourist hiking our amazing mountain trails..... then running out of water by 9am. By 11am its either a helicopter ride out or a funeral.... This heat is no joke. Be safe....

 

[ColoradoCub]

For those that think it’s the minority that have poor AC performance you might want to think again and reread what KCRay wrote a few posts back. I owned a 2019 and now a 2020 , neither one of my trucks would blow colder than 50-51 degrees. The only way to get in the 40’s is with the Hack. So far the AC performance has been the only gripe I’ve had in either truck and luckily it’s a sub $20 fix. Mine blows 43 deg at 90+ outside and it’s sooo much better than stock. It’s pretty clear that Ram has zero intention of fixing the AC in these trucks.

 

[securityguy]

For those that think it’s the minority that have poor AC performance you might want to think again and reread what KCRay wrote a few posts back. I owned a 2019 and now a 2020 , neither one of my trucks would blow colder than 50-51 degrees. The only way to get in the 40’s is with the Hack. So far the AC performance has been the only gripe I’ve had in either truck and luckily it’s a sub $20 fix. Mine blows 43 deg at 90+ outside and it’s sooo much better than stock. It’s pretty clear that Ram has zero intention of fixing the AC in these trucks.

Excuse me Colorado...I read his post loud and clear as did @TheMadDutchDude and @rraulston. What @KcRay stated is his experience along with others on the forum. I get it that some of you have problems and it's a shame RAM has no fix for you. However, it does not appear to be widespread from what I can see. If it was a major issue, and enough owners experienced what you have, it would be corrected in production and a TSB would be released for a "fix". None of us that responded are talking subjectively...we are all talking real numbers after measuring air temps with a valid temperature gauge...some maybe more accurate than others...some in higher heat areas than others (I can't beat Arizona temps in Florida) but close enough for hand grenades

 

[rraulston]

Excuse me Colorado...I read his post loud and clear as did @TheMadDutchDude and @rraulston. What @KcRay stated is his experience along with others on the forum. I get it that some of you have problems and it's a shame RAM has no fix for you. However, it does not appear to be widespread from what I can see. If it was a major issue, and enough owners experienced what you have, it would be corrected in production and a TSB would be released for a "fix". None of us that responded are talking subjectively...we are all talking real numbers after measuring air temps with a valid temperature gauge...some maybe more accurate than others...some in higher heat areas than others (I can't beat Arizona temps in Florida) but close enough for hand grenades

In a few years when I retire, I will be on the hunt for a 34-40' blue water sail boat.... Thinking about giving up the desert for the water.....but the humidity freaks me out......

 

[parnine]

Excuse me Colorado...I read his post loud and clear as did @TheMadDutchDude and @rraulston. What @KcRay stated is his experience along with others on the forum. I get it that some of you have problems and it's a shame RAM has no fix for you. However, it does not appear to be widespread from what I can see. If it was a major issue, and enough owners experienced what you have, it would be corrected in production and a TSB would be released for a "fix". None of us that responded are talking subjectively...we are all talking real numbers after measuring air temps with a valid temperature gauge...some maybe more accurate than others...some in higher heat areas than others (I can't beat Arizona temps in Florida) but close enough for hand grenades

curious....how do you define 'problem' here?

For those who define 'problem' as the FCA specifications on how the AC should operate (clearly documented with actual numbers and not 'icy cold', or 'super cold super fast', which are basically meaningless) the trucks "have a problem".

It is as simple as that.

So, glad you don't have a problem, by your definition of 'problem', enjoy your truck.

But a lot of folks do have a problem with the AC, where the problem is the definition of acceptable AC performance as defined by FCA.

The AC systems on these trucks are crap when compared to the competition, and how I would like an AC system to perform - that is 'my problem'

 

[securityguy]

curious....how do you define 'problem' here?

For those who define 'problem' as the FCA specifications on how the AC should operate (clearly documented with actual numbers and not 'icy cold', or 'super cold super fast', which are basically meaningless) the trucks "have a problem".

Sorry my friend but are you not reading the part where "icy cold" and "super fast" are related back to actual numbers using test instruments? The comments are NOT subjective but backed by data. My definition of "problem" would be if my truck can't get down into the mid-40's on a 95-100 degree day. My truck does and rather quickly too so NO PROBLEM here. I understand you have a "problem" and I hope you can get it fixed.

If every truck had the same issue, I would agree with your assessment. However, they do not. So why do some trucks AC work very well and others do not? It must be something in the vehicle that is not working properly. If it was a design issue, we'd all be experiencing the exact same problem and we are not.

 

[Jeffjad]

I blame global warming

 

[securityguy]

I blame global warming

If there really was such a thing...I'd be right there with ya

 

[ColoradoCub]

curious....how do you define 'problem' here?

For those who define 'problem' as the FCA specifications on how the AC should operate (clearly documented with actual numbers and not 'icy cold', or 'super cold super fast', which are basically meaningless) the trucks "have a problem".

It is as simple as that.

So, glad you don't have a problem, by your definition of 'problem', enjoy your truck.

But a lot of folks do have a problem with the AC, where the problem is the definition of acceptable AC performance as defined by FCA.

The AC systems on these trucks are crap when compared to the competition, and how I would like an AC system to perform - that is 'my problem'

You and a few others obviously have the exception. However I have now owned two 5th gen Rams and a close friend has also owned two 5th gen Rams , from Big Horns to Limiteds , gas to Eco diesels and out of 4 trucks none blow colder than 50-51 and when it gets really hot like 100 they won’t blow colder than mid 50’s. That’s a sample of 4 new trucks, I’d like to think that we are not in the minority. I have owned more new trucks than I can count, from Tundras, to F150’s to Ram 1500’s and 2500’s, I have never had to Jimmy rig my AC in any new truck I’ve owned to get cold AC.

 

[securityguy]

You and a few others obviously have the exception. However I have now owned two 5th gen Rams and a close friend has also owned two 5th gen Rams , from Big Horns to Limiteds , gas to Eco diesels and out of 4 trucks none blow colder than 50-51 and when it gets really hot like 100 they won’t blow colder than mid 50’s. That’s a sample of 4 new trucks, I’d like to think that we are not in the minority. I have owned more new trucks than I can count, from Tundras, to F150’s to Ram 1500’s and 2500’s, I have never had to Jimmy rig my AC in any new truck I’ve owned to get cold AC.

Maybe it's time to stop buying RAM's