When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
The ac was cleaned before at a honda service center and after ac cleaning, the engine acted up... I went back and they reduced the pressure and it was a bit okay after that...
After a few months, i had to have the compressor replaced because its making a sound.... after the repair, the ac is not as cold and the engine acted up again.. so again, reduced the pressure but still not blowing cold air, just cool... and though, the engine is not acting up anymore, i can feel that its a bit draggy to drive...
Can you guys pls help me what the right pressure is for my car??? Or whats wrong with it??
Sounds like there is a blockage in the receiver/dryer.
If the compressor was replaced, the system should have been flushed and the receiver/dryer removed from the condenser and replaced.
I usually replace the condenser when the compressor is replaced as usually **** from the compressor ends up blocking the condenser. And if at your at the point of tearing out the condenser to replace the receiver/dryer, may as well just drop in a whole new condenser at that point.
This blockage will drive the pressure up. The shop should know how to properly charge the unit and flush/ tepair the system after a compressor failure. By removing refrigerant they are just masking the symptoms of a sick ac system. This will not help.
The AC sytem takes 16.9 to 17.8 ounces of R134A. The " pressure" is generated by the compressor. If the high side cannot be bled out into the low side as per normal operation, the high side will get too high and the pressure switch will cut out the compressor coil field and release the clutch on the compressor. Your feeling a " not so cold" ac because its basically non functional at this point .
To fix it either replace to condenser complete or replace the receiver/ dryer and hope for the best. The best is just replacement of the condenser as they are dirt cheap. Below is a diagram and notes on how the basics of a Honda AC works.
As you see there are over pressure fail safes in place.
Last edited by Davey7847; Mar 30, 2021 at 01:42 AM.
Reason: Spelling
Sounds like there is a blockage in the receiver/dryer.
If the compressor was replaced, the system should have been flushed and the receiver/dryer removed from the condenser and replaced.
I usually replace the condenser when the compressor is replaced as usually **** from the compressor ends up blocking the condenser. And if at your at the point of tearing out the condenser to replace the receiver/dryer, may as well just drop in a whole new condenser at that point.
This blockage will drive the pressure up. The shop should know how to properly charge the unit and flush/ tepair the system after a compressor failure. By removing refrigerant they are just masking the symptoms of a sick ac system. This will not help.
The AC sytem takes 16.9 to 17.8 ounces of R134A. The " pressure" is generated by the compressor. If the high side cannot be bled out into the low side as per normal operation, the high side will get too high and the pressure switch will cut out the compressor coil field and release the clutch on the compressor. Your feeling a " not so cold" ac because its basically non functional at this point .
To fix it either replace to condenser complete or replace the receiver/ dryer and hope for the best. The best is just replacement of the condenser as they are dirt cheap. Below is a diagram and notes on how the basics of a Honda AC works.
As you see there are over pressure fail safes in place.
Thank you Davey,
This makes so much sense... I'll have it replaced... im having 2nd thoughts wether to replace only the receiver drier or the whole condenser, because the ac was cold after they reduced the pressure after cleaning and before the compressor was replaced... Im assuming the condenser is working ok... Is it safe to assume?
By the way i forgot to mention that i hear hissing sound from the ac every time I turn it on after starting the car and it's just for a second or 2... Is it something related to the condenser issue?
This makes so much sense... I'll have it replaced... im having 2nd thoughts wether to replace only the receiver drier or the whole condenser, because the ac was cold after they reduced the pressure after cleaning and before the compressor was replaced... Im assuming the condenser is working ok... Is it safe to assume?
By the way i forgot to mention that i hear hissing sound from the ac every time I turn it on after starting the car and it's just for a second or 2... Is it something related to the condenser issue?
There is no such repair process as " reducing the pressure " . That is basically removing refrigerant.
the amount of refrigerant is based on the capacity ( volume) needed for efficient and effective heat exchange. Removing refrigerant is not a repair. Removing refrigerant is reducing the effectiveness of the system.
The hissing noise is not uncommon as its the high and low pressure sides equalizing. Considered normal sounds of an AC system.
As for replacing the condenser; if its not blocked or leaking after replacing the receiver/ dryer , it can be left in place. It should be fully flushed after removal of the receiver/dryer. Again at this point its cost effective to replace it
Crv 2006 car aircon issue and pressure?
