How's your AC ?
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Fleet Mechanic
Joined: Mar 2006
Posts: 1,519
Likes: 134
How's your AC ?
First warm day with my 2019 F-350 6.7 here in the northeast. Finally got to try out my a/c and wasn't too impressed.
Have auto climate so I set it to around 67 - 66 with the re-circulation ON and it didn't get cold cold till I was about half way to work, 15 or so miles.
The truck was sitting in the sun before I started my drive but it was by no means hot today what so ever.
I am only comparing to my previous vehicles where I would get ice cold air out instantly and have to end up turning it down. My 2011 2500HD would be ice cold almost right after I turn the truck on.
Something I should have looked at or most likely normal ?
Thanks
matt
Have auto climate so I set it to around 67 - 66 with the re-circulation ON and it didn't get cold cold till I was about half way to work, 15 or so miles.
The truck was sitting in the sun before I started my drive but it was by no means hot today what so ever.
I am only comparing to my previous vehicles where I would get ice cold air out instantly and have to end up turning it down. My 2011 2500HD would be ice cold almost right after I turn the truck on.
Something I should have looked at or most likely normal ?
Thanks
matt
Fleet Mechanic
Joined: Apr 2018
Posts: 1,502
Likes: 165
First warm day with my 2019 F-350 6.7 here in the northeast. Finally got to try out my a/c and wasn't too impressed.
Have auto climate so I set it to around 67 - 66 with the re-circulation ON and it didn't get cold cold till I was about half way to work, 15 or so miles.
The truck was sitting in the sun before I started my drive but it was by no means hot today what so ever.
I am only comparing to my previous vehicles where I would get ice cold air out instantly and have to end up turning it down. My 2011 2500HD would be ice cold almost right after I turn the truck on.
Something I should have looked at or most likely normal ?
Thanks
matt
Have auto climate so I set it to around 67 - 66 with the re-circulation ON and it didn't get cold cold till I was about half way to work, 15 or so miles.
The truck was sitting in the sun before I started my drive but it was by no means hot today what so ever.
I am only comparing to my previous vehicles where I would get ice cold air out instantly and have to end up turning it down. My 2011 2500HD would be ice cold almost right after I turn the truck on.
Something I should have looked at or most likely normal ?
Thanks
matt
if my car is hot and it’s set to 67 in full auto it will turn the fan all of the way up and blast cold air. Only time it slows down the fan speed is if I’m on a hands free call.
It does seem to do some tweaking from temperature delta because setting the temp lower will make it go all out if it’s not. I might try that just to confirm your AC is capable of pumping cold air...
Thread Starter
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Fleet Mechanic
Joined: Mar 2006
Posts: 1,519
Likes: 134
okay. I thought recirc is needed to avoid bringing in outside air. I did not know it takes it out of auto climate.
That makes sense. I used it the other day without messing with any settings and seemed okay.
That makes sense. I used it the other day without messing with any settings and seemed okay.
New User
Joined: Nov 2018
Posts: 22
Likes: 0
I have 19 F- 350 with 1500 miles, 2 weeks ago I tried my ac and it was not even cool (Hot). Took my truck to the dealer and was told it had no refrigerant in system. Service manager said tech believed refrigerant had not been put in at factory, so they charged unit and put dye in to find any leaks. So far I've used ac pretty consistently and all is good. I find it hard to believe factory didn't charge system,but I'm sure stranger things have happened. I;m leaning towards equipment failure at the factory if no leaks.
Laughing Gas
Joined: Jun 2018
Posts: 939
Likes: 8
From: DFW
Well at the ranch in SE NM earlier this year was 97 and it blew out ice cold air in recirc set on the lowest temp. Leaving tomorrow am for the ranch and it will be 94 Friday and Saturday. One of the reasons I overlook some of the other shortcoming such as the moonroof and APIM issues is the AC it is just outstanding even idling for a couple of hours at 110+ in the summer.
Never had a truck that was more effective in blowing ice cold in extreme temperatures even at idle...
Never had a truck that was more effective in blowing ice cold in extreme temperatures even at idle...
Elder User
Joined: Jun 2017
Posts: 685
Likes: 4
Mine works great. And I second what Dave said, sitting at Idle in extreme heat, truck is very comfortable. One thing I did notice is that when it's hot out and the truck is idling the ECM will engage the cooling fan until you start moving. Pretty cool, someone explained the stages of the fan engagement parameters in another thread somewhere. I'm sure that has something to do with the effectiveness of the A/C on hot days.
Laughing Gas
Joined: Jun 2018
Posts: 939
Likes: 8
From: DFW
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Elder User
Joined: Jun 2017
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This was on a warm day at idle, the towel was damp from drying the truck off. These things definitely move some air.
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Elder User
Joined: Jun 2017
Posts: 685
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The cooling fan and viscous drive actuator valve controls the fluid flow from the reservoir into the working chamber. Once viscous fluid is in the working chamber, shearing of the fluid results in fan rotation. The valve is activated by a pulse width modulation (PWM) output signal from the powertrain control module (PCM). By opening and closing the fluid port valve, the PCM controls the fan speed. Fan speed is measured through a Hall effect sensor, and is monitored by the PCMduring closed loop operation. The PCM optimizes the fan speed based on the engine coolant temperature, the engine oil temperature, the fuel rail temperature, the transmission fluid temperature, the intake air temperature, or air conditioning requirements.
Found this on another forum that was posted by a Ford Technician. There was more to it but it wouldn't copy and paste the whole post. It's also my understanding that this applies to diesels only. The gas motors are viscous drive only.
Found this on another forum that was posted by a Ford Technician. There was more to it but it wouldn't copy and paste the whole post. It's also my understanding that this applies to diesels only. The gas motors are viscous drive only.
Mountain Pass
Joined: Feb 2005
Posts: 177
Likes: 7
Living in Phoenix, where it reaches over 115 several times a year, I’ve learned how to use the A/C. When I first get in the truck, it can be over 140 inside. I turn on the A/C on high, with fresh air pushed (no recirc) and roll down the windows. Once cool to cold air starts to come out of the vents (usually 3-5 minutes), then I put it on max A/C (which automatically puts it on recirc) and roll up the windows. These are are big trucks with big interiors. It takes a little bit to cool them off.
