PLEASE HELP! 2011 6.7 a/c problems
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PLEASE HELP! 2011 6.7 a/c problems
I have a 2011 f250 lariat with the dual climate control and cooled/heated seats and for the last few months my ac has been acting up. Most days my compressor kicks off and on never on for more than 10 seconds it also blows through all vents no matter what setting it is put on. then out of the blue some days the compressor stays on and cools the truck great but its rare and if its running and I turn the truck off it wont kick back on most of the time.so far I have replace the low side switch replaced the compressor. checked for leaks multiple times never bleeds down pressure replaced everything I can think of under the hood. if anyone has any advice please help.
Cargo Master
Joined: Feb 2015
Posts: 2,338
Likes: 255
From: Livermore Ca.
Have the system checked for leaks. Sounds like it's low on freon. As for the vents. It could be a bad actuator on the blend door or something like that. A vacuune line may have come off under the dash.
Hotshot
Joined: Jan 2004
Posts: 19,760
Likes: 1,079
From: St Louis
Have the system checked for leaks. Sounds like it's low on freon.
A vacuune line may have come off under the dash.
I have a 2011 f250 lariat with the dual climate control and cooled/heated seats and for the last few months my ac has been acting up. Most days my compressor kicks off and on never on for more than 10 seconds it also blows through all vents no matter what setting it is put on. then out of the blue some days the compressor stays on and cools the truck great but its rare and if its running and I turn the truck off it wont kick back on most of the time.so far I have replace the low side switch replaced the compressor. checked for leaks multiple times never bleeds down pressure replaced everything I can think of under the hood. if anyone has any advice please help.
Have you done ANY of the diagnostics in the factory service manual?
Cargo Master
Joined: Feb 2015
Posts: 2,338
Likes: 255
From: Livermore Ca.
There are vacuum lines under the dash for the blend doors on the heater box. The only way you can know for sure if the freon is low is to put some gauges on it and see what the pressure is. Mostly the reason the compressor comes on and off is because of low pressure. it could be the switch but to replace that you have to dump the ac charge. Check to make sure the wires are on the switch. Have you been under there working in that area that you might have knocked the wire loose? This is best done at a shop because if there is freon in the system than there is a lot of pressure in the system. Even when its off.
Hotshot
Joined: Jan 2004
Posts: 19,760
Likes: 1,079
From: St Louis
There are vacuum lines under the dash for the blend doors on the heater box.
The only way you can know for sure if the freon is low is to put some gauges on it and see what the pressure is.
it could be the switch but to replace that you have to dump the ac charge. Check to make sure the wires are on the switch.
You should probably refrain from giving advice about things you don't understand....
iam not replacing stuff its been at a mechanics shop for two months and he says he knows what hes doing I just put the stuff he has replaced so it could be ruled out
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