2013 AC Issue - Cheap Part, but EXPENSIVE FIX!

[tiktok4321]

Hey all,

I have a 2013 MKZ Hybrid. AC evaporator keeps freezing up. My mechanic said that the solution was to replace the Evap Discharge Temp probe. Unfortunately, the labor to tear out the dash would end up making this repair cost over $2800!

I've seen videos on bypassing the probe on earlier models, but I don't think that'll help. The probe needs to identify lower temps so it can shut off the compressor.

So what if I do the labor? I can't even find the freakin' part!! Ford only sells the WHOLE evap core (with the stand alone probe) for $190. OK - still a lot less than $2800, but I just want the $20 probe - which NO ONE SELLS. If I try to buy the Evap core from Autozone/Advance Auto/Etc., they actually sell the core WITHOUT the probe. Sigh. Can't win for losing.

So two questions here - 1) can I actually buy the right probe for the job? 2) is there any shortcut to removing the dash to get to this probe?

 

[Action]

Not sure of your experience. And I have not done that repair. So just some general suggestions.

Obtain the factory shop manual for HVAC repairs.
Likely there is a test procedure for this part. Test it for a second opinion.
Obtain any tools necessary.
Search youtube for evaporator RnR to give you an understanding of how to access the evaporator and where the sensor is located.
The sensor is not a commonly replace part. If not part of the system that handles refrigerant, consider used if a new part can not be found.

Action

 

[tiktok4321]

There seems to be nothing on YouTube that matches the process for a 2013 MKZ Hybrid (or Ford Fusion anything for that matter).

 

[Action]

I am assuming you mean removing the evaporator when you state "the process".

You are moving in the realm of a complex repair that is not done frequently. As stated above, the shop manual set will be your friend.

Action

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[tiktok4321]

I am assuming you mean removing the evaporator when you state "the process".

You are moving in the realm of a complex repair that is not done frequently. As stated above, the shop manual set will be your friend.

Action

No. Removing the dash to get to the probe that's on the evaporator. My system is charged, and no leak detected. I only need to replace the probe.

 

[Action]

Finding a vid on the probe may not exist.
Finding a vid for the evaporator may be more likely to exist and may show you clues how to access to the probe.
Searching for something that is not easily found might be best started with things that are more easily found.
Otherwise the shop manual will address the part in how it is to be accessed and/or replaced.
You are seeking info on a 15 year old car that is no longer made.

Hope you find what you are seeking.

Action

 

[batchman]

I don't know how these work but can picture the sensor measuring the refrigerant itself, so could be integral with the evaporator, like welded in. If so it may not be serviceable, or even if it is could require evacuating the system. Maybe there is enough detail in the pictures on a replacement parts site or the exploded views at a Ford parts site.

Offhand I'd expect a wiring problem to be more likely than a thermocouple failure.

Good luck and let us know what you find,
- Jeff

 

[tiktok4321]

This is the part number as identified by my local Ford Parts dealer: GG9Z-19850-A. Notice that it's the whole package. The probe on the bottom right is a separate unit that clips to the evap coils. They just don't sell the probe separately.

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