A/c Problem...back To The Dealer????
Thread Starter
Burning Brakes
Joined: Feb 2007
Posts: 752
Likes: 0
From: Palm Harbor Florida
A/c Problem...back To The Dealer????
Not sure if this should be posted here but here goes: lately, like the last week or two, during the real hot weather here in Florida, I've put the A/C on after going out to dinner after the car has sat outside in the evening sun(while still hot out, say about 90-95 degrees out) for about 1-1.5 hours and as my wife and I are leaving the resturant and with the A/C turned on, its blowing HOT air out for, say about 2, maybe up to 3 minutes before you hear something click on(the compressor, I think???) and all of a sudden the air starts blowing cold again. The temperature is set at 76, 75, or at 74 degrees at the instrument panel.What could be causing this to happen lately? Could this be a warrenty problem and do you think I should take the car back to the dealer to look at A/C system?
appreciate any thoughts on this...
Melting Slicks
Joined: Mar 2006
Posts: 2,255
Likes: 3
From: Sugar Hill Georgia
I would, because I wouldn't know where to start looking for a cause to your problem. One of the many gear heads that frequents the forum might have an idea what to check? I know my AC starts getting cold within 15 seconds and within 2-3 minutes running on high fan speed with recirculation enabled, I have to turn the fan down. And that's with a triple black car. If you do take it in let us know what the dealer says. 
Thread Starter
Burning Brakes
Joined: Feb 2007
Posts: 752
Likes: 0
From: Palm Harbor Florida
it did it again to day-97 degrees outside and hot air blowing for 3 minutes straight! Got an aptmt to go to the dealer on Friday right after i have an all-chrome Altenator and chrome bracket installed Friday morning. I'll let you know...
Team Owner
Joined: May 2004
Posts: 82,175
Likes: 1,319
From: McKinney TX
St. Jude Donor '21-'22-'23-'24
I would, because I wouldn't know where to start looking for a cause to your problem. One of the many gear heads that frequents the forum might have an idea what to check? I know my AC starts getting cold within 15 seconds and within 2-3 minutes running on high fan speed with recirculation enabled, I have to turn the fan down. And that's with a triple black car. If you do take it in let us know what the dealer says.
Yep, I'd say you need to take it to the dealer. Mine blows cold air within 10-15 seconds after startup. I leave mine on AUTO all the time and it automatically switches to recirculate with the fan on high.
Team Owner
Joined: Feb 2000
Posts: 53,529
Likes: 77
From: Arizona
This is a known problem with '05's. Too much freon was originally installed, and the system will cycle as you describe at higher outside temps. The dealer simply needs to remove some freon, and I'm sure there's a TSB on this. I removed 2 phfffts of freon on my own and it seemed to correct the situation. I eventually brought it in for the definitive fix/amount.
Advanced
Joined: Jan 2004
Posts: 55
Likes: 0
From: Reno Nv
Same Problem
I am having the same problem during the last couple of weeks. When I start the car in 90+ degree heat, Nevada & So. Cal, it blows cold for less than a minute then a/c goes off and it blows warm to hot air for a couple of minutes then returns to blowing cold air.
I will be interested to know what the dealer says.
I will be interested to know what the dealer says.
Team Owner
Joined: Feb 2000
Posts: 53,529
Likes: 77
From: Arizona
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CF Senior Member
Joined: Feb 2006
Posts: 23,313
Likes: 25
From: Tucson Arizona
This is a known problem with '05's. Too much freon was originally installed, and the system will cycle as you describe at higher outside temps. The dealer simply needs to remove some freon, and I'm sure there's a TSB on this. I removed 2 phfffts of freon on my own and it seemed to correct the situation. I eventually brought it in for the definitive fix/amount.
Although I don't know why it would take so long for the problem to manifest itself....there's a TSB out on this problem. The A/C compressor head pressure becomes too high under heavy cooling load, and the system shuts down. The fix is to reduce the R134A fill from 1.1 pounds to 1.0 pounds.This may not be the current problem but it's an idea.
Team Owner
Joined: Feb 2000
Posts: 53,529
Likes: 77
From: Arizona
Thread Starter
Burning Brakes
Joined: Feb 2007
Posts: 752
Likes: 0
From: Palm Harbor Florida
This is a known problem with '05's. Too much freon was originally installed, and the system will cycle as you describe at higher outside temps. The dealer simply needs to remove some freon, and I'm sure there's a TSB on this. I removed 2 phfffts of freon on my own and it seemed to correct the situation. I eventually brought it in for the definitive fix/amount.
can you imagine me asking the dealer to look for the TSB that talks about removing 2 phfffts of freon??? NOT!
pretty funny answer though. hanhhhhhaha
Thread Starter
Burning Brakes
Joined: Feb 2007
Posts: 752
Likes: 0
From: Palm Harbor Florida
I Have The Dealer's Answer .....finally!
OK, THIS IS IT! STRAIGHT FROM THE HORSE'S MOUTH! The first thing the service writer asked was where did I keep the a/c button, on Fresh Air or Recirculate? I asked what in the world was he talking about??? I just pushed the a/c on and set the temp to 74, considering it was 94-97 outside, I figured that was low enough to get things going. Then he says, Did I read the Book? What Book? I said back. The Owner's Manual! Sure I did, two and half years ago! Now i just push the a/c switch on with it already set on 74 and that's it! WRONG ANSWER!
What I was supposed to do is set the temp at 60 degrees, hit the recirculate push button but NOT set the fan switch on high but on medium to medium-to-low position. GUESS WHAT??? IT'S WORKS!!! SO FAR, ANYWAY! FOR THE LAST 2 TIMES IT DID. I'LL GIVE IT ANOTHER 2 WEEKS AND GIVE Y'ALL ONE LAST REPORT ON THIS.
Thanks for all your technical support and all, guys, you're all great! I can't wait to go back and tell them to check their TSB book for the one that refers to the removal of excess of PHFFTS of freeon.
If that aint a classic, I don't know what is-
What I was supposed to do is set the temp at 60 degrees, hit the recirculate push button but NOT set the fan switch on high but on medium to medium-to-low position. GUESS WHAT??? IT'S WORKS!!! SO FAR, ANYWAY! FOR THE LAST 2 TIMES IT DID. I'LL GIVE IT ANOTHER 2 WEEKS AND GIVE Y'ALL ONE LAST REPORT ON THIS.
Thanks for all your technical support and all, guys, you're all great! I can't wait to go back and tell them to check their TSB book for the one that refers to the removal of excess of PHFFTS of freeon.
If that aint a classic, I don't know what is-
Thread Starter
Burning Brakes
Joined: Feb 2007
Posts: 752
Likes: 0
From: Palm Harbor Florida
Update:
Just today, in 97 degrees, and after sitting for lunch for 3 hours and then starting it up, no air for almost 2 minutes! then it was not cold but just COOL, SORT OF! Wrong Answer! Got an aptmt to go back to the dealer on Thursday afternoon after i let the car sit outside in the dang hear for 2-3 hrs to REPLICATE today's situation, for crying out loud,!
And i was told this system is not the same as in my '99 Riviera! Too bad, it should be- maybe I wouldn't be having these problems now! Had my compressor changed one time in 8 years by the dealer-and they gave me a lifetime warranty to boot in the Riviera!
Anyway, we'll see how this works out on Thursday...
And i was told this system is not the same as in my '99 Riviera! Too bad, it should be- maybe I wouldn't be having these problems now! Had my compressor changed one time in 8 years by the dealer-and they gave me a lifetime warranty to boot in the Riviera!
Anyway, we'll see how this works out on Thursday...
Team Owner
Joined: Feb 2000
Posts: 53,529
Likes: 77
From: Arizona
Just today, in 97 degrees, and after sitting for lunch for 3 hours and then starting it up, no air for almost 2 minutes! then it was not cold but just COOL, SORT OF! Wrong Answer! Got an aptmt to go back to the dealer on Thursday afternoon after i let the car sit outside in the dang hear for 2-3 hrs to REPLICATE today's situation, for crying out loud,!
And i was told this system is not the same as in my '99 Riviera! Too bad, it should be- maybe I wouldn't be having these problems now! Had my compressor changed one time in 8 years by the dealer-and they gave me a lifetime warranty to boot in the Riviera!
Anyway, we'll see how this works out on Thursday.
And i was told this system is not the same as in my '99 Riviera! Too bad, it should be- maybe I wouldn't be having these problems now! Had my compressor changed one time in 8 years by the dealer-and they gave me a lifetime warranty to boot in the Riviera!
Anyway, we'll see how this works out on Thursday.
Le Mans Master
Joined: Aug 2001
Posts: 8,145
Likes: 1
From: Bradenton FLORIDA
My wifes 05 acted the same way....we adjusted the freon & replaced the outside air temp sensor to fix it.
We are close & are a full service AC shop, stop by & we will check it for free & make sure the right amount of freon is in it.
We are close & are a full service AC shop, stop by & we will check it for free & make sure the right amount of freon is in it.
Instructor
Joined: Aug 2007
Posts: 198
Likes: 0
From: Falcon CO
I leave mine at 60 and press auto. It goes to recirc, hi fan by itself. After about <10 minutes, I turn the fan speed down and to non-recirc. I leave it at 60. Haven't taken any real long trips with the a/c on yet--even driving out from NH to here used it very little--top off most of the way. If I do, then I'll set the temp at 70 or something. I do that in the cold weather, but turn the a/c switch off so the compressor doesn't run. This is the best a/c I've ever had! Much better than in my SS.
Burning Brakes
Joined: Dec 2004
Posts: 882
Likes: 0
From: St. Augustine Fl
I had the same thing with mine, took it a dealer in Greenville SC and they tried to charge me $170 to remove the R134 and add the correct amount.... I told them they were crazy, took it home and let out 3 phfffts of R134 and it seems to holding up in Miami weather.