HVAC Control Head
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Joined: Mar 2007
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From: Indiana Cornfield
HVAC Control Head
Now that I have the blend doors done and are working correctly, I was wondering if I could get opinions on replacing the control unit in the car. It doesn't blow air according to the meter that shows the stack growing as the fan speeds up. Doesn't seem like that big of a job. Will it work better? Are they ALL **** from the factory? Thoughts and opinions?
Safety Car
Joined: Mar 2017
Posts: 3,762
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From: Orlando Florida
Does air come out of the vents you select? No air coming out of the defroster vents when the dash vents are selected? If the air path isn’t working, you’ll be able to hear the fan speed increase but won’t be able to tell as the air goes up to the defroster or down to the floor.
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Banned Scam/Spammer
Joined: Mar 2007
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From: Indiana Cornfield
I should have been more clear. The unit works. If I want a higher fan speed but not full blast I can't access it. It's more or less all the way on or not a peep. Anywhere between full and minimal is non existent. When you get to the top of the fan gauge, it wakes up and goes hurricane. The air comes out of the vents I select, yes.
However, I drove it today and the heat was on auto set at 73. All of a sudden the heat came on and it was blowing at a nice clip as if it had selected it. Not full blast but I could hear it blowing. I've owned the car for a couple years and it never did that before so it must have been an issue when I bought it. That tells me the control unit is junk, no? It can select the fan speed so we know that's ok but the unit won't allow me to do it.
I thought if I changed out the head unit for a newer or refurbished model it would work better than the one I currently have. I just did the actuators and I tell ya, it was quite a relief after all that work to have the heat working properly. I was dreading the fact it wouldn't. Why not go all the way and have the head unit work right?
What a great first world problem to have.
However, I drove it today and the heat was on auto set at 73. All of a sudden the heat came on and it was blowing at a nice clip as if it had selected it. Not full blast but I could hear it blowing. I've owned the car for a couple years and it never did that before so it must have been an issue when I bought it. That tells me the control unit is junk, no? It can select the fan speed so we know that's ok but the unit won't allow me to do it.
I thought if I changed out the head unit for a newer or refurbished model it would work better than the one I currently have. I just did the actuators and I tell ya, it was quite a relief after all that work to have the heat working properly. I was dreading the fact it wouldn't. Why not go all the way and have the head unit work right?
What a great first world problem to have.
Thread Starter
Banned Scam/Spammer
Joined: Mar 2007
Posts: 3,684
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From: Indiana Cornfield
Don't take this the wrong way but have you been to a mechanic lately? Hold onto something if you have to go because you're about to get floored. Anything is doubled as of 6 mths ago. Rotors? Up 300%. From 30 to over 90 bucks! Pads are now 80 bucks for metallic.
So I guess what I'm saying is no mechanic will be looking at my car on my dime. Prices are flat to falling slightly on these cars in general though. Saw a low mileage 04 Z06 yesterday for 41k! LOL!
.
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From: Oregon
St. Jude Donor '14-'15-'16-'17-'18-'19-'20-'21-'22-'23
I should have been more clear. The unit works. If I want a higher fan speed but not full blast I can't access it. It's more or less all the way on or not a peep. Anywhere between full and minimal is non existent. When you get to the top of the fan gauge, it wakes up and goes hurricane. The air comes out of the vents I select, yes.
However, I drove it today and the heat was on auto set at 73. All of a sudden the heat came on and it was blowing at a nice clip as if it had selected it. Not full blast but I could hear it blowing. I've owned the car for a couple years and it never did that before so it must have been an issue when I bought it. That tells me the control unit is junk, no? It can select the fan speed so we know that's ok but the unit won't allow me to do it.
.
However, I drove it today and the heat was on auto set at 73. All of a sudden the heat came on and it was blowing at a nice clip as if it had selected it. Not full blast but I could hear it blowing. I've owned the car for a couple years and it never did that before so it must have been an issue when I bought it. That tells me the control unit is junk, no? It can select the fan speed so we know that's ok but the unit won't allow me to do it.
.
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