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Why does my air conditioning feel weak during the day, but strong in the evening?


Stuff coming out from my ACAir conditioning not on, but still giving out cold air when car in motion, and makes hissing sounds1997 Ford Expedition Intermittent Hot/Cold AirFord Explorer Weak Air Flow Defrost/Air ConditioningA/C clutch 2000 grand marquis is leaking2003 Honda - Air Conditioning not working - why and how to fix itDoes the cabin air filter protect anything other than my lungs?Why would a vehicle air conditioning compressor be more likely to fail than a “stationary” one?White smoke coming out of ventsHow to fix air-conditioning in 2008 Honda CRV






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1















Recently I have noticed that the air conditioning in my 1997 Accord is very weak on hot sunny days - I can feel very little cold air coming out of the vents. But in the evenings it works fine - the air coming out of the vents feels very cold.



It's been probably around 14 years since I had the air conditioning fixed (and it cost around $800 back then). A local Honda dealer has a coupon for an "AC performance test" and up to one pound of Freon. Could it be that all I need is some Freon to be added, or is something else the problem?



EDIT: Does anyone know how many pounds of Freon go into the AC? I called my Honda dealer (not the same one that has the coupon) to see if they would match the coupon, and they said that you can't just add Freon to the AC. They said you have to evacuate all the old Freon and then put new Freon in. They were confused by the "up to one pound of Freon" wording.










share|improve this question






























    1















    Recently I have noticed that the air conditioning in my 1997 Accord is very weak on hot sunny days - I can feel very little cold air coming out of the vents. But in the evenings it works fine - the air coming out of the vents feels very cold.



    It's been probably around 14 years since I had the air conditioning fixed (and it cost around $800 back then). A local Honda dealer has a coupon for an "AC performance test" and up to one pound of Freon. Could it be that all I need is some Freon to be added, or is something else the problem?



    EDIT: Does anyone know how many pounds of Freon go into the AC? I called my Honda dealer (not the same one that has the coupon) to see if they would match the coupon, and they said that you can't just add Freon to the AC. They said you have to evacuate all the old Freon and then put new Freon in. They were confused by the "up to one pound of Freon" wording.










    share|improve this question


























      1












      1








      1








      Recently I have noticed that the air conditioning in my 1997 Accord is very weak on hot sunny days - I can feel very little cold air coming out of the vents. But in the evenings it works fine - the air coming out of the vents feels very cold.



      It's been probably around 14 years since I had the air conditioning fixed (and it cost around $800 back then). A local Honda dealer has a coupon for an "AC performance test" and up to one pound of Freon. Could it be that all I need is some Freon to be added, or is something else the problem?



      EDIT: Does anyone know how many pounds of Freon go into the AC? I called my Honda dealer (not the same one that has the coupon) to see if they would match the coupon, and they said that you can't just add Freon to the AC. They said you have to evacuate all the old Freon and then put new Freon in. They were confused by the "up to one pound of Freon" wording.










      share|improve this question
















      Recently I have noticed that the air conditioning in my 1997 Accord is very weak on hot sunny days - I can feel very little cold air coming out of the vents. But in the evenings it works fine - the air coming out of the vents feels very cold.



      It's been probably around 14 years since I had the air conditioning fixed (and it cost around $800 back then). A local Honda dealer has a coupon for an "AC performance test" and up to one pound of Freon. Could it be that all I need is some Freon to be added, or is something else the problem?



      EDIT: Does anyone know how many pounds of Freon go into the AC? I called my Honda dealer (not the same one that has the coupon) to see if they would match the coupon, and they said that you can't just add Freon to the AC. They said you have to evacuate all the old Freon and then put new Freon in. They were confused by the "up to one pound of Freon" wording.







      honda ac accord






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      edited 7 hours ago







      pacoverflow

















      asked 8 hours ago









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          2 Answers
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          Get it recharged as a first step. In my 2009 Vibe, I had a similar problem. The hot day air was just too much for the air conditioner to cool down much. The cooler air in the night was cool enough and the air conditioner seemed like it was working. In reality it wasn't, and the refrigerant in the air conditioner was running low. A recharged fixed it right up.






          share|improve this answer






























            0














            Quick clarification, "Freon" is a brand name (like Kleenex). What is actually used is a refrigerant denoted with a type code. Most auto systems newer than 1994 use R134a.



            Just to answer your edit question, per this article most newer passanger cars hold 14-28 oz. of refrigerant. Generally you can "top-off" the refrigerant as long as your existing refrigerant is not on that has been banned. If it has then your system has to be fully evac'd before using a different type.






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              2 Answers
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              Get it recharged as a first step. In my 2009 Vibe, I had a similar problem. The hot day air was just too much for the air conditioner to cool down much. The cooler air in the night was cool enough and the air conditioner seemed like it was working. In reality it wasn't, and the refrigerant in the air conditioner was running low. A recharged fixed it right up.






              share|improve this answer



























                3














                Get it recharged as a first step. In my 2009 Vibe, I had a similar problem. The hot day air was just too much for the air conditioner to cool down much. The cooler air in the night was cool enough and the air conditioner seemed like it was working. In reality it wasn't, and the refrigerant in the air conditioner was running low. A recharged fixed it right up.






                share|improve this answer

























                  3












                  3








                  3







                  Get it recharged as a first step. In my 2009 Vibe, I had a similar problem. The hot day air was just too much for the air conditioner to cool down much. The cooler air in the night was cool enough and the air conditioner seemed like it was working. In reality it wasn't, and the refrigerant in the air conditioner was running low. A recharged fixed it right up.






                  share|improve this answer













                  Get it recharged as a first step. In my 2009 Vibe, I had a similar problem. The hot day air was just too much for the air conditioner to cool down much. The cooler air in the night was cool enough and the air conditioner seemed like it was working. In reality it wasn't, and the refrigerant in the air conditioner was running low. A recharged fixed it right up.







                  share|improve this answer












                  share|improve this answer



                  share|improve this answer










                  answered 8 hours ago









                  Michael StachowskyMichael Stachowsky

                  1505 bronze badges




                  1505 bronze badges























                      0














                      Quick clarification, "Freon" is a brand name (like Kleenex). What is actually used is a refrigerant denoted with a type code. Most auto systems newer than 1994 use R134a.



                      Just to answer your edit question, per this article most newer passanger cars hold 14-28 oz. of refrigerant. Generally you can "top-off" the refrigerant as long as your existing refrigerant is not on that has been banned. If it has then your system has to be fully evac'd before using a different type.






                      share|improve this answer



























                        0














                        Quick clarification, "Freon" is a brand name (like Kleenex). What is actually used is a refrigerant denoted with a type code. Most auto systems newer than 1994 use R134a.



                        Just to answer your edit question, per this article most newer passanger cars hold 14-28 oz. of refrigerant. Generally you can "top-off" the refrigerant as long as your existing refrigerant is not on that has been banned. If it has then your system has to be fully evac'd before using a different type.






                        share|improve this answer

























                          0












                          0








                          0







                          Quick clarification, "Freon" is a brand name (like Kleenex). What is actually used is a refrigerant denoted with a type code. Most auto systems newer than 1994 use R134a.



                          Just to answer your edit question, per this article most newer passanger cars hold 14-28 oz. of refrigerant. Generally you can "top-off" the refrigerant as long as your existing refrigerant is not on that has been banned. If it has then your system has to be fully evac'd before using a different type.






                          share|improve this answer













                          Quick clarification, "Freon" is a brand name (like Kleenex). What is actually used is a refrigerant denoted with a type code. Most auto systems newer than 1994 use R134a.



                          Just to answer your edit question, per this article most newer passanger cars hold 14-28 oz. of refrigerant. Generally you can "top-off" the refrigerant as long as your existing refrigerant is not on that has been banned. If it has then your system has to be fully evac'd before using a different type.







                          share|improve this answer












                          share|improve this answer



                          share|improve this answer










                          answered 3 hours ago









                          kyle_engineerkyle_engineer

                          2,8295 silver badges23 bronze badges




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