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Ford fiesta: 2011 Ford Fiesta AC compressor periodically coming…

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2011 Ford Fiesta AC compressor...
2011 Ford Fiesta AC compressor periodically coming on ; Blows hot when you come to a stop but comes back on when on highway; just recharged;
Submitted: 3 years ago.Category: Ford
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Answered in 38 minutes by:
5/31/2015
Ford Mechanic: Scott W., Ford Technician replied 3 years ago
Scott W.
Scott W., Ford Technician
Category: Ford
Satisfied Customers: 3,627
Experience: 28 yrs. experience as Ford ASE Master Technician. Accolades include being a 2005 Ford PTS Regional Finalist and 2006 ASE Ford National Technician.
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Hello my name is Scott
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Ford Mechanic: Scott W., Ford Technician replied 3 years ago
Is the engine cooling fan running? What are the system pressures when it isn't cooling?
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Customer reply replied 3 years ago
according to the "tech" pressures were good -- no leaks; No I don't think the fan was running actually -- So "if the coolant temp is too high it will keep the compressor from engaging" ?
Customer reply replied 3 years ago
What could be wrong with the Fan? How much is it to replace? what else could be wrong if not the "radiator/cooling" of the engine (periodic compressor engage when at highway speed)
Ford Mechanic: Scott W., Ford Technician replied 3 years ago
Could be a bad fan. Open circuit. The fan needs to run when the ac is on or it will quit cooling. Going down the road you don't need the fan unless it is really hot out.
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Customer reply replied 3 years ago
This would cause the compressor clutch to "not engage"? Then it is true that a hot radiator will "keep the clutch from engaging"?
Ford Mechanic: Scott W., Ford Technician replied 3 years ago
Yes, if the engine temperature is too high, the computer will shut down the ac system since it takes more cooling when the ac is on.
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Customer reply replied 3 years ago
Ok. .. otherwise what are other common failures with the symptoms I described....please list all thank you
Ford Mechanic: Scott W., Ford Technician replied 3 years ago
Here is a list of all possible cause from workshop manual. The air conditioning (A/C) is inoperativeFuse(s)Wiring, terminals or connectorsA/C system discharged/low chargePCMHVAC moduleA/C clutch relayA/C compressor clutch air gapA/C pressure transducerEvaporator discharge air temperature sensorA/C compressor clutch field coil
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Customer reply replied 3 years ago
Are any of these are linked to SYNCH?
Ford Mechanic: Scott W., Ford Technician replied 3 years ago
No they aren't, are you having sync concerns also?
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Customer reply replied 3 years ago
No...i have no indicators in my SYNC report...so I would expect a failure code with some of the items listed...ie PCM; Is that a safe assumption?
Ford Mechanic: Scott W., Ford Technician replied 3 years ago
Yes you are correct, something needs to be coding to to be listed.
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Ford Mechanic: Scott W., Ford Technician replied 3 years ago
PCM, module, ect.
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Ford Mechanic: Scott W., Ford Technician replied 3 years ago
Do you have any more questions?
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Customer reply replied 3 years ago
Not now..i will finalize tomorrow
Ford Mechanic: Scott W., Ford Technician replied 3 years ago
Ok sounds good, thank you.
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Customer reply replied 3 years ago
Thank you
Ford Mechanic: Scott W., Ford Technician replied 3 years ago
Not a problem, if need anything answered we are here.
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