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A/C Issues? Anyone else

gimmie11s said:
Fun fact:

In the late 90's, from the factory GM installed a vacuum operated "heater control valve" in their trucks/suburbans/tahoes that would stop coolant from passing through the heater core in the cab of the truck any time the temperature on the panel was set to cold.

They did this for the exact problem we are talking about here.

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I dont know how many of those i fixed for people customer would complain about no heat from faulty actuators we just made them a manual valve they were more than happy
 
H3LZSN1P3R said:
I dont know how many of those i fixed for people customer would complain about no heat from faulty actuators we just made them a manual valve they were more than happy
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I replaced one on my Tahoe two months ago! They are junk plastic and fail often.

Manual valve is a good idea!
 
Mine blows plenty cold although I do have to set the auto at about 68deg's. I have noticed that it makes a difference where the windshield is facing in relation to the sun on how hard it blows for some reason. I'm guessing the temp sensor is in the mirror cluster.
 
BubbaWilkins said:
Mine blows plenty cold although I do have to set the auto at about 68deg's. I have noticed that it makes a difference where the windshield is facing in relation to the sun on how hard it blows for some reason. I'm guessing the temp sensor is in the mirror cluster.
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Mine blows plenty cold also... At least until ambient outside temps get above 85 to 90 degrees F and that is exactly when I need the AC. When it is 75 outside, blowing cold air does not really matter to me. However, unless it is winter, and I want heat, I could do without the vent only setting heating the outside air by 10 or 15 degrees.
 
In the listing they show Ram 1500. Is 2500 same location?
 
Riddick said:
In the part description they list where it's located on both 1500s and 2500s. Also, there are pictures that show each location.
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I actually purchased that kit last summer but there were different pictures provided and I couldn't find a hose with ENG OUT tag on it. Winter started and decided to leave it for the summer. Had to use AC couple days ago and it reminded me how ****ty it is.
 
Does the photo below shows the correct location? Black steel pipe coming out of what I think it is water pump. Photo taken from bottom
20220530_165245.jpg
Photo taken from top
20220530_165554.jpg
 
ARR said:
Can you explain what you did here. Is that a right angle ball valve? What is the function of that part you removed? Nice pictures.
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I want to install that valve from Amazon posted above by someone else. But the listing shows 1500 and 2500 diesel. It seems my 2500 gas doesn't have a hose marked "ENG OUT". So I assume the black steel pipe is where I should install the valve
 
ARR said:
Can you explain what you did here. Is that a right angle ball valve? What is the function of that part you removed? Nice pictures.
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I removed that black fitting with the 90* quick connect fitting and put 3 1/2" pipe with a right angle ball valve in it's place. Tight fit but works great!
 
G’Dave said:
I'm guessing this would also be applicable to the Hemi? The AC in my new truck does not seem to be a cold as it was in my 2014 1500 EcoDiesel.
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I'm sure you can do something similar, just need to stop the flow of hot coolant through the heater core, it doesn't matter if it's before or after the core it's stopping the flow that makes it work.
 
Do the newer trucks still have this issue or has there been a valve of some sort installed on the 22 models? I think the easiest way for me would be a c-clamp on the heater hose from Memorial Day to Labor Day.
 
A day this week in the mid 80s reminded me I wanted to do the Muzzy's A/C Hack. If you go to that Amazon link and look at the diesel photo (#5) provided by Muzzy's, (1st photo below), it sure looks like they show it installed on the hose with the green arrow in the bottom photo below of my engine. But if you look at the 2nd photo below, he sure looks like he is pointing to the hose which has the red arrow in my truck's photo. (EDIT: I see now the 2nd photo he is pointing just to the area. I had not noticed the small valve he has installed on the green arrowed hose.)

Anyway, I think with my edit above, it is pretty clear it should be installed on the hose with the green arrow. I will leave this post with photos here for others finding this thread but if anyone wants to confirm it is the hose with green arrow, that will seal the deal and get rid of the warm A/C. Thanks!

Muzzys.jpg



2019.png


My Truck Hoses 2.jpg
 
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Will_T said:
A day this week in the mid 80s reminded me I wanted to do the Muzzy's A/C Hack. If you go to that Amazon link and look at the diesel photo (#5) provided by Muzzy's, (1st photo below), it sure looks like they show it installed on the hose with the green arrow in the bottom photo below of my engine. But if you look at the 2nd photo below, he sure looks like he is pointing to the hose which has the red arrow in my truck's photo. (EDIT: I see now the 2nd photo he is pointing just to the area. I had not noticed the small valve he has installed on the green arrowed hose.)

Anyway, I think with my edit above, it is pretty clear it should be installed on the hose with the green arrow. I will leave this post with photos here for others finding this thread but if anyone wants to confirm it is the hose with green arrow, that will seal the deal and get rid of the warm A/C. Thanks!

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View attachment 39422
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Yes, I agree the green arrow.
 
Just a data point for those with 2022 6.7 Cummins trucks I have a CCLB Dually Longhorn. It was 109 where I am at today. The A/C performed as it should and was nice and cold.
 
baker01 said:
Just a data point for those with 2022 6.7 Cummins trucks I have a CCLB Dually Longhorn. It was 109 where I am at today. The A/C performed as it should and was nice and cold.
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Can you tell if theres a valve in there? Maybe they added a heater valve?
 
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