A/C under load switches to defrost | Ford Explorer Forums - Serious Explorations

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A/C under load switches to defrost

Roberto Scelza

New Member
Joined
July 15, 2016
Messages
4
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0
City, State
Hamilton, NJ
Year, Model & Trim Level
2008 Ford Explorer XLT
I saw this issue on the older Explorers forum but did not see it here, forgive me if i am duplicating a thread.
On my 2008 Explorer XLT the AC switches from the main vents to the defroster/windshield vents under heavy load, then returns to normal once i am cruising again. Vacuum lines under hood are intact and have good vacuum and i have good vacuum at reservoir tank under the dash/ passenger side, i also removed tank to see if it holds vacuum and it did for the 7 minutes that i had pump connected to it. This is where i stopped. Any help would be appreciated. Other than that the A/C works fine.
 



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I saw this issue on the older Explorers forum but did not see it here, forgive me if i am duplicating a thread.
On my 2008 Explorer XLT the AC switches from the main vents to the defroster/windshield vents under heavy load, then returns to normal once i am cruising again. Vacuum lines under hood are intact and have good vacuum and i have good vacuum at reservoir tank under the dash/ passenger side, i also removed tank to see if it holds vacuum and it did for the 7 minutes that i had pump connected to it. This is where i stopped. Any help would be appreciated. Other than that the A/C works fine.
Do a search for ac check valve, that is probably the problem
 






Thanks!
I just ordered a new 1 from Amazon for only $ 9 and it will be delivered tomorrow, thats quicker than i will be able to check it so i figured i will just swap it out, i will keep you posted.
 






do you mind sending me a link to the product you ordered from Amazon? searched for one and could not find it. I have a 2010 Ford Explorer XLT.
Thanks
 






I cant believe a $ 9 part worked but, it solved the problem.
Motorcraft YG360 Vacuum Checking Switch
 












Thanks Roberto for providing me the link, I appreciate it very much.
 






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