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How to replace the A/C Compressor?

Tiny
LIONELL8732
  • MEMBER
  • 2007 MERCURY MILAN
  • 2.3L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 187,000 MILES
Hello, my next project is my A/C compressor for my vehicle listed above. Any diagram or guides to help me change out that part.
Friday, July 21st, 2023 AT 9:50 AM

9 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,690 POSTS
Yep, here is a generic guide to help you step by step with instructions in the diagrams below to show you how on your car:

https://www.2carpros.com/articles/replace-air-conditioner-compressor

Please go over this video as well:

https://youtu.be/4EqdrBVb0sY

Check out the images (below). Please let us know if you need anything else to get the problem fixed.
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Saturday, July 22nd, 2023 AT 12:43 PM
Tiny
LIONELL8732
  • MEMBER
  • 143 POSTS
So, after installing the A/C compressor, it clicks on and blows cold and strong. So, I took it on a highway drive and click the knob over to setting 2 after about five minutes of running the air went from blowing strong to blowing low and now, I'm confused and don't know what to do next. Any idea of what to look into next?
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Monday, July 31st, 2023 AT 9:01 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,690 POSTS
It sounds like the system needs a small amount of refrigerant added because it sounds like the evaporator is icing up and stopping the air flow. Can I ask what the high and low side readings are, please give me the ambient air temperature as well.
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Tuesday, August 1st, 2023 AT 10:09 AM
Tiny
LIONELL8732
  • MEMBER
  • 143 POSTS
Okay.
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Friday, August 4th, 2023 AT 11:14 AM
Tiny
LIONELL8732
  • MEMBER
  • 143 POSTS
So, my wife called me and said that the A/C is now blowing hot air so I'm like okay. We just replace the A/C compressor like what now so once she arrived home I hook up my scan tool and I be darn its the nightmare trouble code P0537.
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Saturday, August 5th, 2023 AT 2:14 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,690 POSTS
The P0537 trouble code in a 2007 Mercury Milan refers to an issue with the Ambient Air Temperature Sensor Circuit. Here is the location of the sensor so you can change it out. Check out the images (below). Please let us know what happens.
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Monday, August 7th, 2023 AT 9:56 AM
Tiny
LIONELL8732
  • MEMBER
  • 143 POSTS
I am having trouble locating the ambient temperature sensor.
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Sunday, August 13th, 2023 AT 9:44 AM
Tiny
LIONELL8732
  • MEMBER
  • 143 POSTS
Help.
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Sunday, August 13th, 2023 AT 1:16 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,690 POSTS
Thanks for the video, sorry for the trouble, they can hide the sensor sometimes. It shows the sensor near where you have the wiring harness going to the SRS impact sensor. Check out the images (below). Please let us know how it goes.
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Monday, August 14th, 2023 AT 11:48 AM

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