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#4541335 - 10/12/17 04:05 PM Weak A/C after multi freon charging
Omar_Eltahan Offline


Registered: 12/13/16
Posts: 40
Loc: Egypt
I have a chery A5 car, its model has only fresh air filter, no filter for circulation a/c.

I was running a/c with low and fan speed at 2 or 3 Max. I'm in Egypt so temp. Reaches 40+ easily in summer.

A few months ago a/c went weak in air flow not cooling temp. Means that front seats passengers will feel ok with fan on 4+ while back seat passengers feel hot even with the back air vents located in middle console.

freon Ratio is fixed and I've changed freon machines many times by changing places, also I've cleaned the evaporator and external fresh air filter, even changing it also I've cleaned the blower, all of that without positive results.

Do I have to change the blower or you may recommed another solution?
_________________________
2012 Chery A5 1.6L

Engine:Castrol Magnatec 10w40
Transmission:Mobil 80w90
Brake:Castrol DOT4
Power Steering:Unknown
Radiator Coolant:Mobil HOAT 33% EG

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#4541343 - 10/12/17 04:15 PM Re: Weak A/C after multi freon charging [Re: Omar_Eltahan]
SHOZ Offline


Registered: 06/28/03
Posts: 5746
Loc: Illinois
Maybe a blend door problem in the duct work?
_________________________
2008 Hyundai Accent 1.6L 5 sp manual hatchback
2010 Hyundai Genesis Coupe Track 2L Turbo 6sp manual

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#4541352 - 10/12/17 04:25 PM Re: Weak A/C after multi freon charging [Re: Omar_Eltahan]
nthach Offline


Registered: 01/02/04
Posts: 3895
Loc: California
How are the system pressures between the low and high side? Are the blend doors properly switching over between the heater core and evaporator? Did you blindly add refrigerant without checking for leaks and the system high/low side pressures?

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#4541448 - 10/12/17 06:46 PM Re: Weak A/C after multi freon charging [Re: Omar_Eltahan]
Omar_Eltahan Offline


Registered: 12/13/16
Posts: 40
Loc: Egypt
I've tested pressure and leak on vacuum pressure machine and everything is ok.

What're blend doors?
_________________________
2012 Chery A5 1.6L

Engine:Castrol Magnatec 10w40
Transmission:Mobil 80w90
Brake:Castrol DOT4
Power Steering:Unknown
Radiator Coolant:Mobil HOAT 33% EG

Top
#4541452 - 10/12/17 06:50 PM Re: Weak A/C after multi freon charging [Re: Omar_Eltahan]
SHOZ Offline


Registered: 06/28/03
Posts: 5746
Loc: Illinois
Blend door is under the dash after the blower and before the evap and heater core. Usually a motor goes bad on it.
_________________________
2008 Hyundai Accent 1.6L 5 sp manual hatchback
2010 Hyundai Genesis Coupe Track 2L Turbo 6sp manual

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#4541511 - 10/12/17 07:28 PM Re: Weak A/C after multi freon charging [Re: Omar_Eltahan]
Omar_Eltahan Offline


Registered: 12/13/16
Posts: 40
Loc: Egypt
It works fine, have tested it too.
_________________________
2012 Chery A5 1.6L

Engine:Castrol Magnatec 10w40
Transmission:Mobil 80w90
Brake:Castrol DOT4
Power Steering:Unknown
Radiator Coolant:Mobil HOAT 33% EG

Top
#4541912 - 10/13/17 07:47 AM Re: Weak A/C after multi freon charging [Re: Omar_Eltahan]
SHOZ Offline


Registered: 06/28/03
Posts: 5746
Loc: Illinois
Maybe the fan blade/cage on the blower is slipping? I would take the blower out and apply 12v directly too it and see what it does.
_________________________
2008 Hyundai Accent 1.6L 5 sp manual hatchback
2010 Hyundai Genesis Coupe Track 2L Turbo 6sp manual

Top
#4541921 - 10/13/17 07:58 AM Re: Weak A/C after multi freon charging [Re: Omar_Eltahan]
SHOZ Offline


Registered: 06/28/03
Posts: 5746
Loc: Illinois
Some newer cars use solid state controllers for the fan speed output. When these go bad the fan becomes unresponsive to input commands.

Is there a way to do a self test on the Climate Control system? Maybe something in your manual says how to do this.
_________________________
2008 Hyundai Accent 1.6L 5 sp manual hatchback
2010 Hyundai Genesis Coupe Track 2L Turbo 6sp manual

Top
#4541932 - 10/13/17 08:08 AM Re: Weak A/C after multi freon charging [Re: Omar_Eltahan]
Omar_Eltahan Offline


Registered: 12/13/16
Posts: 40
Loc: Egypt
I'll check.
_________________________
2012 Chery A5 1.6L

Engine:Castrol Magnatec 10w40
Transmission:Mobil 80w90
Brake:Castrol DOT4
Power Steering:Unknown
Radiator Coolant:Mobil HOAT 33% EG

Top