Heater/AC blowing hot air at 60 or higher

[jagonz]

I guess maybe I should have explained a little more. All I wanted was to get the truck fixed. I didn’t care about getting a new a truck and I didn’t care about getting money from the FCA. I Iove the truck which is why I got another one. To be honest if nothing would have happened in the end I would have just kept it. I just wanted the problem fixed. I don’t know if the TSB were available when I was having the issue, although I was able to find the one for the wranglers and when I showed them they told me it wasn’t a gladiator and they wouldn’t touch it. Believe me I was at the dealership almost every weekend and they were really trying to help me. They even told me in the end that all there gladiators on the lot are doing the same thing and even opened a star case for mine. But for some reason they wouldn’t fix it. They told me they weren’t allowed to try and fix it because the FCA told them that’s how they made it. The dealership was the one who gave me the lawyers contact. My lawyer was the one who advised me to take money instead of a buy back. I told them from the get go that I would buy another and take a chance to see if the problem would be fixed. And it did. Sorry if this rubbed people the wrong way. I was just trying to post about MY outcome with this whole thing.

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[PyrPatriot]

We are all similarly screwed. Joys of having a first gen product I guess.

Generally yes but this isn't really a first gen product, much of the system has been around since late 2018 I thought? I am in a loaner 2021 JL and it's having the same issue.

So, it sounds like blowing hot air until you lower the temp down to LOW is a feature not a bug. Shame. It gets uncomfortably hot even when I have it at 65. AC works great, just the heat is the problem.

 

[nyyankees]

Same!

 

[CKUCF]

It’s really only a problem for me when it’s cool outside. Now that the temps have finally dropped in Florida. It’s back to working like garbage. Between this and the random hot/humid blasts of air from the vent opening under the dash, I hate this AC

 

[danielspivey]

Generally yes but this isn't really a first gen product, much of the system has been around since late 2018 I thought? I am in a loaner 2021 JL and it's having the same issue.

So, it sounds like blowing hot air until you lower the temp down to LOW is a feature not a bug. Shame. It gets uncomfortably hot even when I have it at 65. AC works great, just the heat is the problem.

I’m confused... a feature not a bug?

 

[Duke56]

Up here in Michigan with the weather turning really cold I’ve come to live with the hot air blasting out the dash vents. Warms the inside up really fast and I now accept it as a feature. It only does this out the dash vents so I direct them away from blowing directly on us. Once the Jeep is warmed up nicely I switch to floor vents only or floor and defrost and the blazing hot air stops. The floor or defrost vents do not seem to have the scalding air blowing out of them like the dash vents do. Very weird but I manage it to my advantage.

 

[PyrPatriot]

I’m confused... a feature not a bug?

It's a saying when people dislike what something is doing, and it becomes obvious that it was intentionally designed that way and not a flaw in the system

 

[ShadowsPapa]

Up here in Michigan with the weather turning really cold I’ve come to live with the hot air blasting out the dash vents. Warms the inside up really fast and I now accept it as a feature. It only does this out the dash vents so I direct them away from blowing directly on us. Once the Jeep is warmed up nicely I switch to floor vents only or floor and defrost and the blazing hot air stops. The floor or defrost vents do not seem to have the scalding air blowing out of them like the dash vents do. Very weird but I manage it to my advantage.

I find it blows HOT only to get the cabin up to temp throughout. Once it's at the set temp, I note it starts blowing much cooler air and adjusts to maintain temp inside. So as long as I aim the vents to the back and away from me, no biggy. It actually changes gears, drops fan speed and drops the air temp to about 68 - where I usually have it set.
So a GUESS is that in my case, the cabin is 25, I have it set to 68, so it lets the engine warm up, then increases fan speed and temp until the cabin is 68, then it reduces temp.
It only blows hot when there's a big difference in what I have set as the desired temp and what the current temp is.
When it's not as big a difference (it's 55 inside and I have it set to 68) it doesn't blow as hot or for as long.

The bigger difference in temp as far as actual cabin temp vs. your setting, the more hot air it has to put out to get to your desired setting. At least that's how mine works.
Small difference, not "hot" air blowing out on high. Bigger difference - hotter air blowing out for longer.
In auto mode they work to get cabin up to temp as fast as possible using math.

Edit to add - that's MY experience with Jeep HVAC and how mine works - and it seems to be normal. There's nothing I'd really change about mine. My wife's GC have typically worked about like my JT.
YMMV

 

[43mod]

picked up a Mojave 5 weeks ago in AZ. Drove it straight to Baja 5500 mi so far, 650 or so on dirt. It is not my wifes Raptor but a pretty cool and capable rig for sure. Right off the bat I felt the ac going from hot to cold to hot. Later in cooler weather same thing for heat. On the trip home in cold hwy 395 weather w sandals (Baja requiremnt) this rig was cooking my right foot like a blow drier . We have a high end temp and pressure recorder for work. Once at home I put a probe in for an hour,it records every second . How long does it take to make a foot med rare at 106F ?
As much as I like this rig this flaw I can not accept . Maybe just a lever on a heater hose valve that worked so well for a century or so ?
Russ Phillips

 

[danielspivey]

I find it blows HOT only to get the cabin up to temp throughout. Once it's at the set temp, I note it starts blowing much cooler air and adjusts to maintain temp inside. So as long as I aim the vents to the back and away from me, no biggy. It actually changes gears, drops fan speed and drops the air temp to about 68 - where I usually have it set.
So a GUESS is that in my case, the cabin is 25, I have it set to 68, so it lets the engine warm up, then increases fan speed and temp until the cabin is 68, then it reduces temp.
It only blows hot when there's a big difference in what I have set as the desired temp and what the current temp is.
When it's not as big a difference (it's 55 inside and I have it set to 68) it doesn't blow as hot or for as long.

The bigger difference in temp as far as actual cabin temp vs. your setting, the more hot air it has to put out to get to your desired setting. At least that's how mine works.
Small difference, not "hot" air blowing out on high. Bigger difference - hotter air blowing out for longer.
In auto mode they work to get cabin up to temp as fast as possible using math.

Edit to add - that's MY experience with Jeep HVAC and how mine works - and it seems to be normal. There's nothing I'd really change about mine. My wife's GC have typically worked about like my JT.
YMMV

Sorry you keep giving long explanations of you why you think other peoples experiences are normal function of the HVAC when it’s not.

Explain to me why when the outside temperature is the mid 60s, mine blows full heat from HI to 61. To be clear when I would have it on 62, it’s FULL heat. ONLY when I drop it to all the way to LOW and then back up to 62, I get cooler temperatures. This is repeatable and has been since I’ve had the Jeep.

When I took it in to the dealer for my 10k mark I asked them to follow the exact instructions I gave above. They said supposedly they couldnt repeated it. I thought hey, maybe they did a flash and it fixed things. Got in the jeep, same thing. HI heat on every temp until 61, then only when I drop it to LOW do the temps from 61-74 reflect what they are actually set at. Note, this is with AUTO off.

Could this be a bad blend valve that is stuck until it’s put all the way in low? You’ve repaired vehicles for your whole life, I know you can come up with an explanation or theory better than what the dealer and you have told me.... it works as designed. Sorry, that’s BS.

 

[ShadowsPapa]

Sorry you keep giving long explanations of you why you think other peoples experiences are normal function of the HVAC when it’s not.

Explain to me why when the outside temperature is the mid 60s, mine blows full heat from HI to 61. To be clear when I would have it on 62, it’s FULL heat. ONLY when I drop it to all the way to LOW and then back up to 62, I get cooler temperatures. This is repeatable and has been since I’ve had the Jeep.

When I took it in to the dealer for my 10k mark I asked them to follow the exact instructions I gave above. They said supposedly they couldnt repeated it. I thought hey, maybe they did a flash and it fixed things. Got in the jeep, same thing. HI heat on every temp until 61, then only when I drop it to LOW do the temps from 61-74 reflect what they are actually set at. Note, this is with AUTO off.

Could this be a bad blend valve that is stuck until it’s put all the way in low? You’ve repaired vehicles for your whole life, I know you can come up with an explanation or theory better than what the dealer and you have told me.... it works as designed. Sorry, that’s BS.

Show me where the hell I said yours or other people's experiences are normal? Can you point to the exact place where I said yours works fine? Long? 3 paragraphs, 2 of them pretty short. And that last one - naw, you can't comprehend English, I guess.
You just seem to hate it that others have no issues, and it's working fine - and you really hate it when auto professionals try to explain how their HVAC works and why it's normal in their case.
Nowhere was it said "all others are working fine, too".
You just like to hate it when others aren't agreeing that most or all of them have problems.
MINE is working fine, exactly as designed, and I explained how mine works.

If you hate Jeep HVAC so much why are you even keeping it?

 

[danielspivey]

Show me where the hell I said yours or other people's experiences are normal? Can you point to the exact place where I said yours works fine? Long? 3 paragraphs, 2 of them pretty short. And that last one - naw, you can't comprehend English, I guess.
You just seem to hate it that others have no issues, and it's working fine - and you really hate it when auto professionals try to explain how their HVAC works and why it's normal in their case.
Nowhere was it said "all others are working fine, too".
You just like to hate it when others aren't agreeing that most or all of them have problems.
MINE is working fine, exactly as designed, and I explained how mine works.

If you hate Jeep HVAC so much why are you even keeping it?

Here you go:

“
I'd almost make a bet that this is by design and if it didn't do that, those who crank the AC down to 34 degrees on a very humid day would soon find their AC not working.

OF course I could be wrong - but I've yet to see any explanations other than hate of the system and calling engineers idiots.

Seems like everyone is an engineer and refuses to believe that sometimes there are logical scientific reasons - but if they hate it, then the engineer is stupid or an idiot because "it doesn't work like I WANT it to"

 

[Sal]

It’s really only a problem for me when it’s cool outside. Now that the temps have finally dropped in Florida. It’s back to working like garbage. Between this and the random hot/humid blasts of air from the vent opening under the dash, I hate this AC

This is how I fixed the humid burts of air. you lose the recirc/ fresh air option tho. It stays on whatever option you last had before you disconnect it

 

[JJ__ATX]

Same problem. I've never owned or been in any other vehicle where the HVAC operates this way. So frustrating.

 

[danielspivey]

Yea I’m going to get them to look at it again when I go back for the next oil change. This time I’m actually stay and show them in person. Evidentially last time they were unable to follow my directions.... or didn’t try. Typical dealer crap. I’ll hold their hand next time.

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