A/C solutions
Thread Starter
Drifting
Joined: Dec 2015
Posts: 1,406
Likes: 229
From: right here
A/C solutions
Getting really weary of all the senseless bugs in these cars...I'll limit this topic to one in particular. A/C blows frigid air out the center vent while hot air comes out of the passenger side. Defroster will blow hot air out the center and passenger side while the far left driver side blows cool. My question - Is there a way to defeat all this horseshit behind the dash and allow it to blow a constant temp from all vents?
Le Mans Master
Joined: Aug 2005
Posts: 7,392
Likes: 216
From: Merritt Island, FL
Low refrigerant often shows up with the passenger side blowing cold, but the driver side blowing warm. Sounds like something else going on here with a blend door problem. OP needs to check the codes to diagnose the issue. Attempting to remove the actuators and doors back there will probably not give you a great result.
Thread Starter
Drifting
Joined: Dec 2015
Posts: 1,406
Likes: 229
From: right here
Seems to me this design was/is way to complicated for the intended purpose. Why in the world would one need "zones" in a small two passenger enclosed space? The major annoyance for me is the defroster...the windshield is prone to fogging at night and wouldn't you know it, the spot right in front of the driver is the one that blows cool air. Living in Florida and the fact this is a convertible the car has been pretty much delegated to early morning and late evening use...I don't see myself ever raising the top again unless I were caught in a rainstorm. The way the system is working currently that would be a miserable event in itself.
Just went out to the garage and also discovered no setting will allow hot air to be blown from the center and driver side vents.
Just went out to the garage and also discovered no setting will allow hot air to be blown from the center and driver side vents.
Last edited by HandOverFist; May 5, 2022 at 12:05 PM.
Le Mans Master
Joined: Aug 2005
Posts: 7,392
Likes: 216
From: Merritt Island, FL
Seems to me this design was/is way to complicated for the intended purpose. Why in the world would one need "zones" in a small two passenger enclosed space? The major annoyance for me is the defroster...the windshield is prone to fogging at night and wouldn't you know it, the spot right in front of the driver is the one that blows cool air. Living in Florida and the fact this is a convertible the car has been pretty much delegated to early morning and late evening use...I don't see myself ever raising the top again unless I were caught in a rainstorm. The way the system is working currently that would be a miserable event in itself.
Just went out to the garage and also discovered no setting will allow hot air to be blown from the center and driver side vents.
Just went out to the garage and also discovered no setting will allow hot air to be blown from the center and driver side vents.
Do you know how to check the codes using the DIC? If you do that and post here we can discuss.
Having owned several German cars over the years, I know all about frustration with seemingly over-complicated engineering, but the C5 HVAC system really doesn't rank with those BMW and Benz issues I've dealt with. Never owned an Audi because that's a whole other level of clusterfuckery!
Thread Starter
Drifting
Joined: Dec 2015
Posts: 1,406
Likes: 229
From: right here
That's another topic...the DIC is non-operable and apparently non-repairable. One can purchase a used cluster of unknown condition and likely mileage and this "might" fix the issue. One thing after another it seems.
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Melting Slicks
Joined: Oct 2002
Posts: 2,515
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From: Arizona
Melting Slicks
Joined: Oct 2002
Posts: 2,515
Likes: 441
From: Arizona
Melting Slicks
Joined: Oct 2002
Posts: 2,515
Likes: 441
From: Arizona
Most likely you have blend door codes. Research the way to reset them manually by pulling fuses in the passenger footwell and resetting the codes through the dic.
also, may want to do some research on whether those blend doors have been replaced in the past. Excellent starting place to narrow the issue. Good luck!!
also, may want to do some research on whether those blend doors have been replaced in the past. Excellent starting place to narrow the issue. Good luck!!
Drifting
Joined: Apr 2007
Posts: 1,517
Likes: 159
From: Lafayette Louisiana
will have to differ with you here. Bought my 2004 CE convertible new. Daily driver, in fact my only car. 133k miles. It’s the most reliable car I’ve ever owned. And I’ve owned lots of cars. I’m going to agree with others, PO must not have maintained well.
Thread Starter
Drifting
Joined: Dec 2015
Posts: 1,406
Likes: 229
From: right here
If the rest of you had bothered to read the previous posts you would know that the DIC is inoperable...guess the previous owners neglected to grease those buttons as well.
I have researched numerous threads here on the many oddities of these cars. The fact that there are so many and began early on tells me my instinct is correct...this is just more GM junk passed on to the consumers.
Drifting
Joined: Apr 2007
Posts: 1,517
Likes: 159
From: Lafayette Louisiana
[QUOTE=HandOverFist;1605097993]I guess the previous owners failed to grease the blend doors.
If the rest of you had bothered to read the previous posts you would know that the DIC is inoperable...guess the previous owners neglected to grease those buttons as well.
I have researched numerous threads here on the many oddities of these cars. The fact that there are so many and began early on tells me my instinct is correct...this is just more GM junk passed on to the consumers.[/QUOTE
Sounds like you need to get a Ford. 🤣🍻
If the rest of you had bothered to read the previous posts you would know that the DIC is inoperable...guess the previous owners neglected to grease those buttons as well.
I have researched numerous threads here on the many oddities of these cars. The fact that there are so many and began early on tells me my instinct is correct...this is just more GM junk passed on to the consumers.
[/QUOTESounds like you need to get a Ford. 🤣🍻
Le Mans Master
Joined: Aug 2005
Posts: 7,392
Likes: 216
From: Merritt Island, FL
I guess the previous owners failed to grease the blend doors.
If the rest of you had bothered to read the previous posts you would know that the DIC is inoperable...guess the previous owners neglected to grease those buttons as well.
I have researched numerous threads here on the many oddities of these cars. The fact that there are so many and began early on tells me my instinct is correct...this is just more GM junk passed on to the consumers.
If the rest of you had bothered to read the previous posts you would know that the DIC is inoperable...guess the previous owners neglected to grease those buttons as well.
I have researched numerous threads here on the many oddities of these cars. The fact that there are so many and began early on tells me my instinct is correct...this is just more GM junk passed on to the consumers.
Instructor
Joined: Jan 2019
Posts: 215
Likes: 223
From: Atlanta, GA
If your DIC is inop, perhaps investing in an OBD scanner will help. I have an OBDLink MX+. It reads all OBDII codes as well as the GM specific codes. It's been very handy to diagnose the very few issues I have had with my '04.
Intermediate
Joined: Mar 2022
Posts: 42
Likes: 6
Dual zone climate control was considered a big deal back in the mid 90s when these cars were developed. I'm sure a lot of the original buyers found it appealing. Full-manual HVAC was found in the budget-driven FRC cars but nowhere else - even not in the Z06 where weight was so important that thinner glass was specified!
Do you know how to check the codes using the DIC? If you do that and post here we can discuss.
Having owned several German cars over the years, I know all about frustration with seemingly over-complicated engineering, but the C5 HVAC system really doesn't rank with those BMW and Benz issues I've dealt with. Never owned an Audi because that's a whole other level of clusterfuckery!
Do you know how to check the codes using the DIC? If you do that and post here we can discuss.
Having owned several German cars over the years, I know all about frustration with seemingly over-complicated engineering, but the C5 HVAC system really doesn't rank with those BMW and Benz issues I've dealt with. Never owned an Audi because that's a whole other level of clusterfuckery!