2012 Escape A/C?
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Wiser by FTE
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2012 Escape A/C?
The cooling fan runs on high as soon as the a/c is turned on, regardless of the
engine temp. I have the sensor(6F9Z-19D594-AA) that mounts on top of the accumulator. If i replace the existing sensor, will the refrigerant leak out?
engine temp. I have the sensor(6F9Z-19D594-AA) that mounts on top of the accumulator. If i replace the existing sensor, will the refrigerant leak out?
Fleet Mechanic
Joined: Sep 2003
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The A/C Pressure Transducer that sits on top of the Receiver/Drier has a Schrader valve underneath it, as part of the port on the R/D. Once you start unscrewing it and it starts to hiss, keep going till you are up and out of the valve depressor's range (like don't take a phone call, get a beer, etc. with it partially unscrewed 
).
Be sure that your new sensor has the little O-ring that fits up inside it. Sometimes I had gotten CPS switches (used on the side of Accumulator/Driers in the Ford orifice tube era) that the O-ring had fallen out of the box prior to purchase.
Around here, the fan is always running fast with A/C on, due to the high heat load. I hadn't really looked into what switches the radiator fan speed.
).Be sure that your new sensor has the little O-ring that fits up inside it. Sometimes I had gotten CPS switches (used on the side of Accumulator/Driers in the Ford orifice tube era) that the O-ring had fallen out of the box prior to purchase.
Around here, the fan is always running fast with A/C on, due to the high heat load. I hadn't really looked into what switches the radiator fan speed.
Hotshot
Joined: Jan 2004
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From: St Louis
The cooling fan runs on high as soon as the a/c is turned on, regardless of the
engine temp
engine temp
I hadn't really looked into what switches the radiator fan speed.
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Wiser by FTE
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Forgive me, this is my wifes car
. I just replaced the fan speed resistor, because low speeds were out. After that we noticed the cooling fan is full speed as soon as you start the car and turn on the a/c. It wasn't like that before, my only other thought would be to disconnect the battery for a reset? Thanks for the replies
. I just replaced the fan speed resistor, because low speeds were out. After that we noticed the cooling fan is full speed as soon as you start the car and turn on the a/c. It wasn't like that before, my only other thought would be to disconnect the battery for a reset? Thanks for the replies
Hotshot
Joined: Jan 2004
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From: St Louis
It is HIGHLY unlikely that there's anything wrong with the pressure transducer (or the rest of the system, for that matter) if it cools correctly and your only "complaint" is that the fan is working on high speed. With high ambient temperatures, the condenser needs a lot of airflow in order to carry waste heat out of the system. I've had a number of Fords with electric fans that always operated the cooling fans on HIGH when the A/C was engaged regardless of ambient or engine temps.
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Other than the high speed cooling fan, does the A/C function OK? If there is a high pressure issue in the system, the fans will go full on as it is trying to protect the system. But if you are cooling fine with this ~90+ degree heat, it's normal.
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I changed the Transducer on my Escape, but that was only because even though my A/C system was pressurized properly, I was not getting any cold air from the vents. My cooling fan was also running all the time, even during the winter. Once I replaced the transducer, all my problems were fixed. Except the blower motor would not function on lowest setting, so I replaced the resistor. All is well.
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Wiser by FTE
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So i replaced the sensor on the accumulator today and the cooling fan is running at a lower speed, like before! The part was $75.00 at tousley and now the wifey is happy, thanks for your help/posts.
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