Is all tC A/C not cold enough?
06-24-2009, 12:35 AM
#21
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Join Date: Sep 2006
Location: Maryland
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have any of you guys read the manual where it tells you how to get the A/C to work as fast as possible?
when starting your car after it has been lying out in the sun, open all the windows and sun roof (provided it isn't raining), and run the fan at full speed with the a/c on and the cranked to the coolest settings. this helps the car circulate air faster to help get all the hot air out of the vents, and also cool down the heat soaked vents and get all the hot air out of the car, rather than trying to cool down all that air.
i have an 05, and while i don't use the a/c often, it works great when i need it to.
when starting your car after it has been lying out in the sun, open all the windows and sun roof (provided it isn't raining), and run the fan at full speed with the a/c on and the cranked to the coolest settings. this helps the car circulate air faster to help get all the hot air out of the vents, and also cool down the heat soaked vents and get all the hot air out of the car, rather than trying to cool down all that air.
i have an 05, and while i don't use the a/c often, it works great when i need it to.
06-24-2009, 12:02 PM
#22
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Join Date: Sep 2007
Posts: 304
mine is the same... its takes a while to cold down/warmup but it doesn eventuallly get cold. AC comfort depends on humidity too so being in texas doesnt help either. Mine is great on a dry 90 degree day, but on humid days at 90 it is horrible
06-24-2009, 03:48 PM
#24
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Location: Atlanta/Charlotte/Auburn
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There is a bit of a difference in temperature and humidity in Maryland as opposed to Texas. It sees people leave location out of the equation when speaking about AC. I'm sure if I were in Maine I would have the coolest AC but since i'm in the south it doesn't work that way. 
06-24-2009, 03:52 PM
#25
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yeah, it was only 80 degrees today. also, the car was parked in a garage so it wasn't heat soaked so it had an easier time keeping a cool car cool. but i used it in 90-100+ degree weather down in florida for my vacation last month.
06-24-2009, 04:15 PM
#26
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Join Date: Jun 2007
Posts: 24
I'm told that so long as theres a difference of 12 degrees A/C id considered "working". I had a old subaru with the same problem. My Dad does A/C on the subi we made the orifice bigger. It fixed it never had an issue with it freezing up BUT I would never think of doing it to my TC too new of a car to tinker with in that way.
06-24-2009, 06:38 PM
#28
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Join Date: Apr 2009
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Originally Posted by sualwang
HOUSTON It's really hot ! almost 100 everyday. I'm going to the dealer tomorrow!
1 - Are your windows tinted??
2 - Do you use a front wind screen sun shield if you park in direct sunlight??
3 - Do you close the shields in your moon roof or do you leave them open??
4 - Do you run your AC on the recirculation cycle mode??
Seeing at I live in central Florida and it's mid 90s every day and the heat index can push feels like temps over 100 with ease I don't have a major issue with the AC in my tC after about 10-15min of running on 100% cold. Sure you might have a problem with your AC but if you can answer YES to all four questions you really shouldn't be having the problems you talk about.
All that glass on the roof, front and hatch makes keeping the tC as cool as a hard top seadan but saying yes too those four questions does make a huge difference, just as opening the windows when you first take off to exchange out the hotter interior air with the some what "cooler" exterior air.
Cheers
06-26-2009, 10:03 PM
#30
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Join Date: Apr 2009
Posts: 50
Originally Posted by engifineer
Heat index is 105 today (temp of 95 or so) and mine freezes me. Coming from me that says a lot since I am warm natured.
For the person that said theirs dwindled to nothing, you obviously have an issue that needs to be repaired, like a leak.
For others, run it on recirc. As mentioned you will only see about a 15 - 20 degree drop over intake temp. If you are pulling outside air, then you are not getting anywhere on a really hot day.
Also keep in mind that the tC has a black interior which absorbs a lot of the suns energy and takes a while to cool down when really hot. Keeping your sunroof shades closed will help. Mine can take a bit to fully cool down when it has sat in the sun. When sitting in our parking ramp at work today in 95 degree temps, but out of the sun, it was freezing in a few minutes.
On some of the earlier tC's there was a tsb to up the refridgerant level on them to improve cooling. If you have an 05 you may look to see if yours was one of them.
For the person that said theirs dwindled to nothing, you obviously have an issue that needs to be repaired, like a leak.
For others, run it on recirc. As mentioned you will only see about a 15 - 20 degree drop over intake temp. If you are pulling outside air, then you are not getting anywhere on a really hot day.
Also keep in mind that the tC has a black interior which absorbs a lot of the suns energy and takes a while to cool down when really hot. Keeping your sunroof shades closed will help. Mine can take a bit to fully cool down when it has sat in the sun. When sitting in our parking ramp at work today in 95 degree temps, but out of the sun, it was freezing in a few minutes.
On some of the earlier tC's there was a tsb to up the refridgerant level on them to improve cooling. If you have an 05 you may look to see if yours was one of them.
06-27-2009, 03:56 AM
#31
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Join Date: Feb 2008
Location: Washington
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Originally Posted by draxcaliber
have any of you guys read the manual where it tells you how to get the A/C to work as fast as possible?
when starting your car after it has been lying out in the sun, open all the windows and sun roof (provided it isn't raining), and run the fan at full speed with the a/c on and the cranked to the coolest settings. this helps the car circulate air faster to help get all the hot air out of the vents, and also cool down the heat soaked vents and get all the hot air out of the car, rather than trying to cool down all that air.
i have an 05, and while i don't use the a/c often, it works great when i need it to.
when starting your car after it has been lying out in the sun, open all the windows and sun roof (provided it isn't raining), and run the fan at full speed with the a/c on and the cranked to the coolest settings. this helps the car circulate air faster to help get all the hot air out of the vents, and also cool down the heat soaked vents and get all the hot air out of the car, rather than trying to cool down all that air.
i have an 05, and while i don't use the a/c often, it works great when i need it to.
06-27-2009, 06:06 PM
#32
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Scikotics
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Location: Poser City, Texas
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dont forget that our sunroofs are pure glass on top. i usually feel the heat coming from on top of my head. my friend increased the pressure on my AC and it helped out a little bit more.
06-27-2009, 07:58 PM
#33
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Join Date: Nov 2004
Location: Orlando, FL
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The 20 minutes for it to cool down problem is exactly what I had. Its on the list of TSB's for the tC that you can get fixed. I took mine to the dealership several years ago and said this sucks, fix it. And they did.
06-27-2009, 09:39 PM
#34
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Scikotics
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All they do is add more refrigerant and put a new sticker under the hood 
They changed the amount of 134 that the system is supposed to be charged to after a certain point to make it cool down faster.
They changed the amount of 134 that the system is supposed to be charged to after a certain point to make it cool down faster.
06-28-2009, 03:43 AM
#38
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Join Date: Sep 2006
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well, today was a good hot day to test the a/c. on the way home from autocrossing, i got stuck in slow traffic, so i closed up the car and started using the a/c. at first the air was cold, but the car wasn't cooling down that much, i wasn't hot, but the car was just mild, so i closed the shades to the sun roof and set the a/c to recirculate, and before long, i was turning the a/c **** up gradully to get comfortable.
