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Toyota Camry AC Questions

107 messages,  Last post on Dec 23, 2012 at 6:06 AM

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What is this discussion about? Toyota Camry, Heating / Cooling, Sedan

Messages Page 7 of 11

#57 of 107 Re: 2009 Camry LE AC Delay [searchlight7] by 210delray

May 28, 2009 (9:09 am)

Replying to: searchlight7 (May 27, 2009 8:58 pm)
It seems that with only about a minute difference in the time cold air is coming out, I don't think the dealer is going to find anything wrong. But it doesn't hurt to check, because the car is new and under warranty.
 
To me, it seems other factors would be more important, such as the outside air temperature and if the car is parked in direct sun or in the shade. Plus it's possible some A/C design changes were made when the car itself was redesigned for the 2007 model year.

#58 of 107 Re: 2009 Camry LE AC Delay [searchlight7] by wwest

May 28, 2009 (9:23 am)

Replying to: searchlight7 (May 27, 2009 8:58 pm)
Assuming your previous Camry had automatic climate control the blower would not normally come on, or on but not up to full speed, until the refrigerant had cooled the evaporator down to a level wherein you would not "feel" hot airflow if the blower came on earlier.
 
Most manual systems will turn on the blower instantly and until a few minutes have elapsed for the refrigerant to be compressed, cooled to a liquid, and then converted back into a gas in the process of cooling the evaporator, you will always get relative warm system airflow.
 
In any case it might be a good idea to have the dealer modify the default factory settings such that the system does not go into recirculate mode automatically when you first start the A/C cooling system on a HOT sunshiny day or when you use max cooling mode.
 
At time when you enter the car on a hot day and the interior atmosphere is HOTTER then the outside it is a good idea to have the system in FRESH airflow mode, turn the system to max cooling and the blower full up. After a few moments when the HOTTER atmosphere has mostly been exhausted from the cabin then switch to recirculate for substantially improved cooling capacity/efficiency.

#59 of 107 Re: 2009 Camry LE AC Delay [210delray] by searchlight7

May 28, 2009 (9:26 am)

Replying to: 210delray (May 28, 2009 9:09 am)
Thanks 210delray for the reply. I just came back from the dealer, and like you said, he found nothing wrong, so my next question is whether this is characteristic of the model compared to my 2005, and the Service Advisor could not answer.
 
I then went to a dealership sales manager who was involved in my sale, and he stated that he noticed something like that in his 2010 demo but that is as far as he could tell me, either.
 
You would think that he or the service people would know a definitive answer but the best I have received so far is your suggestion that maybe there was an A/C design change.
 
I guess I will have to investigate further. If anyone else knows the definitive answer, I would definitely appreciate it.
 
Thanks again 210delray for pointing me in a direction.

#60 of 107 Re: 2009 Camry LE AC Delay [wwest] by searchlight7

May 28, 2009 (9:38 am)

Replying to: wwest (May 28, 2009 9:23 am)
Wwest I just read your post after I responded to 210delray, thanks for your helpful info, too. My previous Camry did not have automatic climate control but manual.
 
As I mentioned, I just came back from the dealer, and they responded there was nothing wrong but obviously did not or could not respond in the detailed manner that you undertook.
 
That being said, the manual suggests for MAX A/C turn the center dial to MAX A/C and then the left dial to HI. Recirc mode will automatically activate in this mode.
 
If I understand you, your suggestion in my case would be to try and move the center dial up one knotch from MAX, and put the fan at MAX while leaving the windows open for awhile to expel the hot air.
 
Again thanks to all of you so far for the suggestions and help. I do appreciate it,

#62 of 107 Re: 2009 Camry LE AC Delay [searchlight7] by frb263

Jun 03, 2009 (10:33 am)

Replying to: searchlight7 (May 27, 2009 8:58 pm)
I have noticed that the AC in my 2005 Camry LE was significantly stronger than it is in my 2009 Camry. I think my 2009 unit is working correctly, but it takes longer to cool the car on a hot day. The temperature blowing from the vents doesn't seem as cold, and the velocity of air is not a great as the 2005.
I haven't noticed the delay you refer to, nor have I taken it to the dealer. (I don't think they could diagnose a flat tire, much less an AC problem). I checked the cabin air filter, was OK. It seems strange that there would be that much difference between these model years.

#63 of 107 Re: 2009 Camry LE AC Delay [frb263] by wwest

Jun 03, 2009 (12:33 pm)

Replying to: frb263 (Jun 03, 2009 10:33 am)
If your new Camry has automatic climate control and your old one had manual control that may well be the difference.
 
To get maximum, QUICK, cabin cooldown if you have the automatic system the best procedure is to turn the system to the lowest temperatrue setting, the blower should automatically go to MAX speed, over-ride or leave the airflow mode in FRESH for long enough to EXHAUST the HOT cabin atmosphere and then switch the system to recirculate to increase the AC efficiency.
 
Once the cabin atmosphere and surfaces are cooled down then lower the blower speed to a more comfortable sound level.
 
If you want to REALLY improve AC efficiency then go to Home Depot and buy/install a water flow shutoff valve to insert in the hose to the heater core. The A/C can then be left to its own "devices" since the reheat/remix mode is now non-functional.
 
FE will also improve a bit if you use these procedures.

#64 of 107 ('03 Camry XLE) AC not working from all vents by mv52

Jul 27, 2009 (12:26 pm)

Yesterday, after driving about 10 miles on the highway (long enough for the AC to cool down), I noticed that the AC air blowing out of the front center-right vent (next to the center console) and front right side vent (next to the right front door) was blowing at the normal chilled AC temp of 38 degrees, BUT the air blowing out of the front center-left vent (next to the center console) and the front left side vent (next to the left front door) was luke warm (65 degrees). The two rear passenger vents (located between the lower backs of the two front seats) were also blowing luke warm air. Normally (for the past 6 years), all vents have blown chilled air of 38 degrees.
 
There are no controls for separate right and left passenger temperature and there are no separate air temperature and fan speed control knobs. You set the desired cabin temperature with a climate control thermostat (like a home thermostat). The climate control seems to be working okay with regard to the air blowing out of the left-center and right side vents.
 
Any ideas on what the problem may be and how to fix it, short of taking the car to the dealer? Thanks.

#65 of 107 Re: ('03 Camry XLE) AC not working from all vents [mv52] by kiawah

Jul 27, 2009 (2:46 pm)

Replying to: mv52 (Jul 27, 2009 12:26 pm)
I'd suggest watching it for a bit to try to find additional failing symptoms. You really don't have a lot to go on, at this point.
 
There are quite a bit of pieces to this control. There is a computer that manages this, which is also connected to the main engine computer. There are sensors like: thermister, room temp sensor, solar sensor, and outside ambient temp sensor. There are also a number of servo motors (think of an automated electrical door), controlled by the computer, to adjust air inlet, air mix, air vent,etc.
 
I might originally suspect the air vent servo (air vent opened when it shouldn't have), but with only one failing condition at this point....I'd suggest monitoring it closely to see if you can identify different symptoms.
 
Good luck.

#66 of 107 Re: ('03 Camry XLE) AC not working from all vents [mv52] by wwest

Jul 27, 2009 (3:06 pm)

Replying to: mv52 (Jul 27, 2009 12:26 pm)
While you do not have "buttons" to select separate right/left control the climate control in your vehicle may be so equipped. I would suggest disconnecting the battery for ten or 15 minutes then cycling the system through all end points, max/min temperature, airflow routing, defrost/defog/demist mode, etc.
 
Oh, you might try covering the solar radiation sensors with some object to see if that's what's modifying the right/left cooling. The fact that you cannot select separate right/left cooling effects does not mean the system cannot do it automatically.

Messages Page 7 of 11

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