PART 3 Mazda 3 2006 clear step by step AC expansion valve replacement

This video is part of the maintenance process for an AC system in Mazda 3 2006.
We will replace the AC compressor, condenser, and expansion valve, and clean the pipes. Finally, we will charge the system with the appropriate amount of R134a.
In this video, we replaced the expansion valve.
You can find the expansion valve I used in the following link
www.amazon.com...
Check PART 1 to know how to remove the AC compressor
• PART 1: Mazda 3 2006 A...
Check PART 2 to know how to flush and clean the AC system pipes
• PART 2: Mazda 3 2006 f...
Check PART 3 to know how to replace the expansion valve
• PART 3 Mazda 3 2006 c...
Check PART 4 to know how to install the new AC compressor
• PART 4: Mazda 3 2006 A...
Check PART 5 to know how to replace the condenser
• PART 5 Mazda 3 2006 A...
Check PART 6 to know how to install AC belt
• PART 6 Mazda 3 2006 A...
Check PART 7 to know how to properly and professionally charge your AC system
• PART 7 How to properl...

[@bisfal]

very good video.thank you very much.

[@MahmoudAbido]

Thanks, my pleasure

[@ghazanfarjavaid4159]

great hard job is done, what many milli meter size of hixa tools...

[@MahmoudAbido]

@ghazanfarjavaid4159
Thanks
To be honest I don't remember exactly but it should be 8 mm or 10 mm

[@Devo1987]

So what does the expansion valve screw do do you know ?

[@mtnsports]

I was expecting to see you clean the tube between the condenser and the expansion valve....didn't you flush that? Admittedly that would be a challenge, but I thought you mentioned at the end of part 2 that you were planning to flush that tube also.

[@MahmoudAbido]

Thanks for your comment,
You are right, I was planning to clean the pipe coming from the condenser going to the expansion valve. As you mentioned, it will be very challenging, especially you have to clean it in the opposite direction of the refregirant flow (from the expansion valve to the condenser). We don't have enough space to do this.
If we think about it, we will find that we don't need to clean this pipe.
Why?
Because we are cleaning the pipes to remove any contamination. The refrigerant flow goes through the condenser before reaching to this pipe. The condenser has very, very small channels, so most probably, any contamination will stuck in the condenser. Thus, this pipe should be nice and clean.
Do you agree with me?

[@victorcedano2724]

ESO SE HACE COMO PARTE LA LIMPIEZA DE LINEAS DEL SISTEMA DE AIRE, NO POR SEPARADO, NOES QUE NO SE PUEDA HACER PERO ES MAS COMPLICADO Y MENOS SEGURO HACERLO POR SEPARADO.

[@coachtomsvolleyballchannel2286]

My daughter's 2009 Mazda3 has developed a refrigerant leak. It is a fairly rapid leak, I can charge it and it is down again the next day. It was rapid onset too, AC was working fine one day, gone the next. I bought a sniffer and am not detecting anything around the condenser or the upper lines. However, it does give a low level alarm at the interior ducts, so I am suspecting a leak at the evaporator core. Unfortunately that will entail pulling the dash. I am wondering if it would be worth it to check around the expansion valve first.

[@MahmoudAbido]

@coachtomsvolleyballchannel2286
Thanks for asking,
Yes it is true if the leakage from the evaporator, you would need to remove the dashboard. I think it is hard to find a leakage in the expansion valve. But it is worth checking it before removing the dashboard.
You may be able to check the evaporator leakage after removing the cabinet air filter. You will find it a little hard as there is very little space. I would recommend giving it a try before removing the dashboard as well.
Please let me know if you have any questions. I will be happy to help.