I recently discovered your channel. I've been a Cadillac buff since I was 8 years old which just happens to be the year your car came out. I know everything about these mechanical climate control systems before Cadillac changed to the electronic system in 1980 on the Eldorado and Seville models. Auto does not imply air conditioning nor does it mean 'medium.' The system kind of works like the forced hot air HVAC system in a house. When you set it on 'auto' and use the wheel to set a specific temperature, the fan speed will run automatically to maintain the set temperature. If the car is really hot, the air conditioning fan will run at full speed and slowly lower itself as the desired temperature is reached. Conversely, if the car warms up a bit it will automatically kick the fan speed up a notch to maintain the temperature. The same holds true for the heat out the bottom. If the car is really cold, the fan blows at high speed until the temperature is reached and the fan automatically lowers it speed and will raise it again as need be. Now, the 'low' setting means the fan will always run at low speed no matter what you have the temperature set at. It holds true for the heat and air conditioning. It kind of 'overrides' the automatic system. The exact opposite is true for the 'high' setting. The blower for the heater or air conditioning will always run at full high speed no matter what you have the temperature set at. Personally having owned several of these vehicles beginning in 1985 and I still have a 1976 Fleetwood. I never saw the purpose for the 'high' and 'low' switches and I have never used them. Ever. I set it to automatic, set my temperature (usually between 70 to 72) and let the system do its thing. When it works properly, it works REALLY good at maintaining the set temperature.
Thank you for your support and valuable information regarding the settings on the temperature control. I was 6 in 1973, so I’m just two years younger than you. I fell in love with the neighbor’s 1971 Coupe DeVille when I was 7, so more or less right there with you, as far as enthusiasm for Cadillacs at a young age.
@@B3burner Thanks for the story on how you fell in love with Cadillacs! For ME, it was when my (now late) uncle bought a brand new 1973 Eldorado and drove straight from the showroom to our house. he let me sit in it and play with all the cool features that most cars didn't have back then. That was in the fall of '72 so I was 8 years old. I still have a picture of that car. It was white with gray and black hounds tooth cloth interior. I LOVED to ride in it. I used to think that climate control was the coolest thing! I bought my first Cadillac when I was in college and since then, if I'm counting right, I've had 11 of them. I still have 4. Three are classics and my daily driver is an Escalade. Interestingly, Cadillac was the first auto manufacturer in the U.S. to come out with climate control and it was the year I was born; 1964. Back then, there was a different position on that slider for air conditioning and heat until they developed the technology to where it was combined into one. GM made it available as an added option on the Buck Electra and the Oldsmobile Regency 98 beginning in the early '70's. But the one on the Cadillac was always the best.
Thank you for this video! I love the older Cadillacs with the Climate Control on the left hand side of the steering wheel! Your blue brocade upholstery is so elegant and classy! The “Auto” selection, although located between “Lo” and “Hi”, is not really a medium selection, but rather the mode where the fan speed adjusts automatically, anyplace between lowest speed to highest speed, to maintain the temperature selected on the thumb wheel. “Lo” means the fan speed adjusts automatically to maintain the temperature set on the thumb wheel, but the highest fan speed is never utilized. “Hi” means the fan speed adjusts automatically to maintain the temperature set on the thumb wheel, but the lowest fan speed is never utilized. When you get into Cadillacs with electronic Climate Control there are two additional selections: “Lo” manual, which operates the fan only at low speed while attempting to maintain the selected temperature. Also is “Hi” manual, which operates the fan only at high speed while maintaining the selected temperature. When set at “Lo” manual there is no guarantee that the Climate Control will be able to maintain the selected temperature when exterior temperatures are at extremes, and especially when attempting to cool the interior when “solar load” is high. The older Climate Control systems don’t incorporate a “solar load” sensor, only the newer Climate Control systems with the digital display. So in Cadillacs such as my final generation Eldorado with electronic Climate Control the operating modes for heating and cooling are as follows: “Lo” manual (fan speed is fixed at low speed) “Lo” auto (fan speed varies, favoring lower speeds) “Auto” (fan speed varies within its full operating range) “Hi” auto (fan speed varies, favoring higher speeds) “Hi” manual (fan speed is fixed at high speed)
Thank you for all the excellent information, regarding the climate control and fan switch on my 1973 Caddy. Maybe that's why it didn't behave as I thought it would. I'll admit some of your information went a little over my head-- especially the part about the electronic climate control-- but having reread your comment a few times, it makes more sense now. You're talking about the newer Cadillacs, and at first I had missed that part. Thanks for your compliments on the upholstery. I like it too. You don't get colored interiors in cars today. Everything is some sort of grayscale. There are a few wear spots that are turning into holes in the fabric, but it's not so bad that I can justify spending the money to replace it. I'd rather keep the stock material as long as I can. Thanks for watching.
Thank you Keith for your kind words and compliment. That’s great that you have a 73 C Dv as well. I’m curious what color it is, and are you having leaks in similar places? EDIT: Wrong video I’m discussing. In my other vids I make comments about my trunk leaks, not engine fluid leaks.
Great car! Actually the Auto setting is for automatic meaning the fan speed changes as the inside temperature gets up to or down the chosen temp on the temperature wheel.
I recently discovered your channel. I've been a Cadillac buff since I was 8 years old which just happens to be the year your car came out. I know everything about these mechanical climate control systems before Cadillac changed to the electronic system in 1980 on the Eldorado and Seville models.
Auto does not imply air conditioning nor does it mean 'medium.' The system kind of works like the forced hot air HVAC system in a house. When you set it on 'auto' and use the wheel to set a specific temperature, the fan speed will run automatically to maintain the set temperature. If the car is really hot, the air conditioning fan will run at full speed and slowly lower itself as the desired temperature is reached. Conversely, if the car warms up a bit it will automatically kick the fan speed up a notch to maintain the temperature. The same holds true for the heat out the bottom. If the car is really cold, the fan blows at high speed until the temperature is reached and the fan automatically lowers it speed and will raise it again as need be.
Now, the 'low' setting means the fan will always run at low speed no matter what you have the temperature set at. It holds true for the heat and air conditioning. It kind of 'overrides' the automatic system. The exact opposite is true for the 'high' setting. The blower for the heater or air conditioning will always run at full high speed no matter what you have the temperature set at.
Personally having owned several of these vehicles beginning in 1985 and I still have a 1976 Fleetwood. I never saw the purpose for the 'high' and 'low' switches and I have never used them. Ever. I set it to automatic, set my temperature (usually between 70 to 72) and let the system do its thing. When it works properly, it works REALLY good at maintaining the set temperature.
Thank you for your support and valuable information regarding the settings on the temperature control.
I was 6 in 1973, so I’m just two years younger than you. I fell in love with the neighbor’s 1971 Coupe DeVille when I was 7, so more or less right there with you, as far as enthusiasm for Cadillacs at a young age.
@@B3burner Thanks for the story on how you fell in love with Cadillacs! For ME, it was when my (now late) uncle bought a brand new 1973 Eldorado and drove straight from the showroom to our house. he let me sit in it and play with all the cool features that most cars didn't have back then. That was in the fall of '72 so I was 8 years old. I still have a picture of that car. It was white with gray and black hounds tooth cloth interior. I LOVED to ride in it. I used to think that climate control was the coolest thing!
I bought my first Cadillac when I was in college and since then, if I'm counting right, I've had 11 of them. I still have 4. Three are classics and my daily driver is an Escalade.
Interestingly, Cadillac was the first auto manufacturer in the U.S. to come out with climate control and it was the year I was born; 1964. Back then, there was a different position on that slider for air conditioning and heat until they developed the technology to where it was combined into one. GM made it available as an added option on the Buck Electra and the Oldsmobile Regency 98 beginning in the early '70's. But the one on the Cadillac was always the best.
Thank you for this video! I love the older Cadillacs with the Climate Control on the left hand side of the steering wheel!
Your blue brocade upholstery is so elegant and classy!
The “Auto” selection, although located between “Lo” and “Hi”, is not really a medium selection, but rather the mode where the fan speed adjusts automatically, anyplace between lowest speed to highest speed, to maintain the temperature selected on the thumb wheel.
“Lo” means the fan speed adjusts automatically to maintain the temperature set on the thumb wheel, but the highest fan speed is never utilized.
“Hi” means the fan speed adjusts automatically to maintain the temperature set on the thumb wheel, but the lowest fan speed is never utilized.
When you get into Cadillacs with electronic Climate Control there are two additional selections:
“Lo” manual, which operates the fan only at low speed while attempting to maintain the selected temperature.
Also is “Hi” manual, which operates the fan only at high speed while maintaining the selected temperature.
When set at “Lo” manual there is no guarantee that the Climate Control will be able to maintain the selected temperature when exterior temperatures are at extremes, and especially when attempting to cool the interior when “solar load” is high.
The older Climate Control systems don’t incorporate a “solar load” sensor, only the newer Climate Control systems with the digital display.
So in Cadillacs such as my final generation Eldorado with electronic Climate Control the operating modes for heating and cooling are as follows:
“Lo” manual (fan speed is fixed at low speed)
“Lo” auto (fan speed varies, favoring lower speeds)
“Auto” (fan speed varies within its full operating range)
“Hi” auto (fan speed varies, favoring higher speeds)
“Hi” manual (fan speed is fixed at high speed)
Thank you for all the excellent information, regarding the climate control and fan switch on my 1973 Caddy. Maybe that's why it didn't behave as I thought it would. I'll admit some of your information went a little over my head-- especially the part about the electronic climate control-- but having reread your comment a few times, it makes more sense now. You're talking about the newer Cadillacs, and at first I had missed that part.
Thanks for your compliments on the upholstery. I like it too. You don't get colored interiors in cars today. Everything is some sort of grayscale. There are a few wear spots that are turning into holes in the fabric, but it's not so bad that I can justify spending the money to replace it. I'd rather keep the stock material as long as I can.
Thanks for watching.
Beautiful car,great information, I have a 1973 cadillac coupe deville also,keep up the good work
Thank you Keith for your kind words and compliment. That’s great that you have a 73 C Dv as well. I’m curious what color it is, and are you having leaks in similar places?
EDIT: Wrong video I’m discussing. In my other vids I make comments about my trunk leaks, not engine fluid leaks.
😎👍🏼 beautiful Cadillac
Thank you, I appreciate the compliment.
Absolutely beautiful car. Love that it got very cold, thats a good sign.
Thank you for your compliment. Yes, cold is good.
Great car! Actually the Auto setting is for automatic meaning the fan speed changes as the inside temperature gets up to or down the chosen temp on the temperature wheel.
What type of Cadillac did you just drive?
A white 1973 Coupe DeVille. Thank you for watching.
@@B3burner I'm a new subscriber to this channel!
@@jp_ny.rd04 Thank you very much. I appreciate your support! 😇
@@B3burner No problem!