A/C Performance

[marcd118]

All,

I wanted to know how you're A/C is working. I feel mine does not get completely cold all the time. My old 14 blew very cold air.

 

[ryelinek]

All,

I wanted to know how you're A/C is working. I feel mine does not get completely cold all the time. My old 14 blew very cold air.

So here are my thoughts after two days of driving my truck around because I’ve seen a lot of others comment on the AC.

I am not sure if there is a problem with AC temperature across the board but I will say the MAX cold is probably lower than my last two cars. I like a total icebox and this doesn’t go quite that cold.

Yes I will say it takes a little bit to chill down but it’s a big cabin and outside and inside temps can dictate how quickly you can cool the inside down.

Do I wish the MAX cool temperature was lower? Yes without a doubt.

Is it bad enough to where I am upset? No I’m fine with how it is and after a few minutes it does cool down well enough and I become very comfortable.

I’d be interested to see if there is indeed a bigger issue that needs to be addressed though.

In the end unless there is something REALLY off about your AC and the truck will not blow any cold air. I would say it’s currently acting is it was built but there are enough people that probably wish it got a little colder.

 

[firecadet613]

Like @ryelinek, I think the AC is ok. It was upwards of 90° today and seemed to do ok. (Dark red RAM with window tint and the panoramic roof).

It's either slightly not as good as the AC in my 2016 F150 or the same as it - almost to close to say. The F150 had manual AC and the RAM is auto. I kept it at 71-73 for most of the day as at 69 it was too cold and wanted to blow the fan too fast.

Not sure I'll take it in and let the service guys mess with it unless I notice a change with it. Now the slow to respond front passenger door lock might warrant service call/visit.

 

[habu987]

I test drove a black on black Limited with the pano roof today. At the time of the test drive, it was 92° and the truck had been sitting in direct sun all day. When I got in, flipped it to Max AC and it was cooled down within a minute or two. Set the fan speed to 3 and turned the seat vent to high at that point and stayed comfy for the rest of the 15 minute drive.

It wasn't icy cold like one of my friend's old cars (he used to have a Dodge Omni that would create fog at the vents and make you shiver in 100°+ weather), but it seemed equivalent to my current Hyundai Azera.

 

[Cattail cruncher]

Its ok could it be colder yes, it dose the job allot more cab to deal with, imho it should be coolder, hope the heat works better

 

[RT70808]

I found a contact at FCA who does A/C training and emailed them regarding this thread, here’s what I got back this afternoon via email.

The HVAC system on DT is very similar to what we use Pacifica and Cherokee that I have covered these in previous years.

Has anyone run a performance test and what are the readings?
I’d start there and possibly re-calibrate the HVAC doors to ensure they are properly calibrated.
We have no service bulletins or dealer notices of any HVAC issues with the 2019 truck. It is a larger cab and it’s been a really hot summer in a lot of areas.
I also checked with engineering and they are not aware of any known issues with these. I’ll keep my ears open and if I hear anything further, I’ll let you know, but that’s as much as I have right now.
Hope that helps​

 

[RBRK]

The door calibration could be an issue since some have seen about an 8 degree difference between drivers and passenger side.

 

[RT70808]

The door calibration could be an issue since some have seen about an 8 degree difference between drivers and passenger side.

Unfortunately it’s going to be a dealer thing, my research showed that it is done via the wiTech service software.

 

[I Love Grits]

My liquid line pressure is 50 psi less than the lower limit allowed and when purging the gauge manifold I noticed some type of debris being discharged. I'm suspecting a restricted evaporator coil which is awesome since the whole dash will have to come out.

Driver measured temp was reading 5* hotter than the allowable temperature and I also have a 8* difference between driver and passenger vents. Additionally I have a rogue recirculation door that will cycle on its own & doesn't seem to seal properly.

Headed to the dealer this week or next.

 

[RT70808]

My liquid line pressure is 50 psi less than the lower limit allowed and when purging the gauge manifold I noticed some type of debris being discharged. I'm suspecting a restricted evaporator coil which is awesome since the whole dash will have to come out.

Driver measured temp was reading 5* hotter than the allowable temperature and I also have a 8* difference between driver and passenger vents. Additionally I have a rogue recirculation door that will cycle on its own & doesn't seem to seal properly.

Headed to the dealer this week or next.

That sucks, but at least you’ll be able to communicate it to the service manager when you take it in.

 

[RBRK]

IS your low side pressure ok? If it is low as well, it could be undercharged. keep us updated.

 

[I Love Grits]

That sucks, but at least you’ll be able to communicate it to the service manager when you take it in.

Honestly I'm a little leery of bringing up the fact I hooked up a gauge set at all. Feels like I'm opening myself up to a "You screwed with it, how do we know you didn't cause it? Its not our problem" kind of deal.

I'm planning on leaving that info out the first go around and seeing what they come back with. If they say everything checked out OK, at that point I'll ask them to hook up the recovery machine and check pressures and show me.

IS your low side pressure ok? If it is low as well, it could be undercharged. keep us updated.

Low pressure side was within range with 35 shown on gauge (32.5 - 42.5 allowed).

 

[RBRK]

I still think it could be undercharged, if it was say 42 low the high might be closer to spec, I know on the Honda cars I work on, if the system is low the passenger side will be warmer. Mine is the same about 6 degrees difference from the left of stereo vent to the right. If the system is full, the only logical thing would be "normal" which doesn't mean you like it, or the blend door not being shut completely. Either a sync using the diagnogstic scan tool or software issue. Depending on how long the hoses are on your gauge, you slightly let some refrigerant out, the machines compensate the charge with the amount left in the hoses. I know its not much. but still is an ounce or more usually

 

[392DCGC]

May build date in my Limited, and I'm not pleased with the AC performance at all. Currently in southwest U.S. and the temps get up to about 100 degrees, plus the sunlight beating down on the truck (although I do use a dash shade & have windows tinted). Once it's heat soaked in the middle of the day, it takes about 15 minutes for me to feel comfortable... and that's still with the AC blowing on me at what seems like full tilt - set to auto w/ recirc enabled.

I don't give a damn what the manual says to do - no car I've ever owned has been this pitiful with AC. Does flushing out the hot air help? Sure. But again, no car I've ever owned have I felt like I HAD to help the system cool the cabin down.

 

[habu987]

Idle curiosity, no idea if this would make any difference (I'm absolutely not an engineer)--I've seen a number of folks complaining about the AC performance and they've got it set to Auto. For those with poor performing AC, is it just as bad if you take it off Auto and manually set the fan speed?

 

[Flot]

Idle curiosity, no idea if this would make any difference (I'm absolutely not an engineer)--I've seen a number of folks complaining about the AC performance and they've got it set to Auto. For those with poor performing AC, is it just as bad if you take it off Auto and manually set the fan speed?

Yes, after weeks of 90 degree temps I'm sure most of us have tried everything.

I'm still less than happy with my AC performance, but still hopeful for improvement one way or another.

RT7 thanks for the checkin with a factory guy. If people aren't complaining to the dealer, the issues won't get logged and the factory will never look at it. Ilovegrits, be very interested to see what yours says.

I do have the random switch from recirc to fresh air, but not often. I do have a 6 degree temp difference between drivers and passenger side.

I can get tolerable temps out of the system in recirc, but it doesn't help with the wall of heat which is radiating off of my dash and windshield. There seems to be very little air movement between the dash and windshield, so when that's heated up to 100 degrees it is staying that way.

I have noticed that in 90 degree temps I just can't put the system on fresh air mode, around town or on the highway - the air coming out is just not cold enough. I have a friend with a black on black explorer and in a parking lot on the same day it was completely different.

 

[Ken1085]

I test drove a 19 Ram Rebel today with pano roof, Red Flame color and it had been sitting in the lot in direct FL sun for most of the day. We opened the roof and windows to let heat out and then drove for a few minutes letting the heat out. Then closed it up and cranked AC. The entire test drive ( at least 7 or 8 miles long) it never really got comfortable in the cabin. I unfortunately was very unimpressed with that aspect. After the drive I hoped back in my 4th gen Power wagon and AC difference was dramatic. My truck has the basic fan, temp and direction dials in it. My impression of the Rebel AC on max felt like my Power Wagon when the AC dial is turned straight up and not towards cool or heat. Got me thinking my next truck is now going to be another 4th gen Power Wagon. Kinda bummed because I really wanted to want the truck more then the one I was driving. I cant honestly say I did after the drive.

 

[alwi228]

I test drove a 19 Ram Rebel today with pano roof, Red Flame color and it had been sitting in the lot in direct FL sun for most of the day. We opened the roof and windows to let heat out and then drove for a few minutes letting the heat out. Then closed it up and cranked AC. The entire test drive ( at least 7 or 8 miles long) it never really got comfortable in the cabin. I unfortunately was very unimpressed with that aspect. After the drive I hoped back in my 4th gen Power wagon and AC difference was dramatic. My truck has the basic fan, temp and direction dials in it. My impression of the Rebel AC on max felt like my Power Wagon when the AC dial is turned straight up and not towards cool or heat. Got me thinking my next truck is now going to be another 4th gen Power Wagon. Kinda bummed because I really wanted to want the truck more then the one I was driving. I cant honestly say I did after the drive.

That's a good way to explain it in past cars. It pretty much feels like if the ac/heat dial is turned at 50/50 (12 o'clock), mine gets to about 1 o'clock unless im able to get on a highway pretty quick. If I had overcast for the day OR the temps stay lower than 90, it cools up pretty darn quick. But if its sunny and ready 107 in the car...it's going to be a rough ride home in rush hour

 

[RamCares]

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

 

[I Love Grits]

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

Done. Thank you for the offer.