2009 Ford Flex AC and overheating issues, 110k miles.


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2009 Ford Flex AC and overheating issues, 110k miles.

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Auto Repair Home>> Automotive Repair>> AC Auto Repair Help Forum

Rockbot
New User

Jul 22, 2021, 5:36 AM

Post #1 of 4 (891 views)

2009 Ford Flex AC and overheating issues, 110k miles.	Sign In

Please talk to me like I am 5 years old...my Flex AC will only cool when the car is in motion. Fan is operating properly and the freon levels are fine. It's occasionally started overheating as well.

I plan to do a full coolant flush this weekend (coolant recommendations?).

I'd love some troubleshooting tips please!

Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jul 22, 2021, 5:53 AM

Post #2 of 4 (888 views)

Re: 2009 Ford Flex AC and overheating issues, 110k miles.	Sign In

Quote

Fan is operating properly and the freon levels are fine.

Specifically, how did you determine those things?

Also, if you have an overheating problem, flushing will do nothing for it. Flushing is a maintenance procedure designed to prevent cooling system damage but it will not undo any existing damage.

Make sure the system is actually full with no air pockets which would indicate a slow leak.

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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.

Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Jul 23, 2021, 8:34 AM

Post #3 of 4 (850 views)

Re: 2009 Ford Flex AC and overheating issues, 110k miles.	Sign In

Late to chime in - sorry. Check for debris between condenser and radiator for vehicles exposed to leaves, debris, most you don't see without removing a top cover?

T

Nacho
User

Jul 26, 2021, 6:52 PM

Post #4 of 4 (787 views)

Re: 2009 Ford Flex AC and overheating issues, 110k miles.	Sign In

Whenever you have a chance, have system pressures taken at idle and at 2,000 rpm and post them. Check if your condenser fan(s) are working properly. (both, -if so equipped-, and hi and low speeds are working)

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