Electronic Touch Climate Control speed settings

[Cme2fly]

Started screwing around with my AC today and I am tired of this thing not blowing hard enough. Does anybody know if there is supposed to be any change in the fan speed when switching from medium to high? My car is the same on medium and high. if not, has anyone upgraded blower motors to push a little more air? I thought about putting in a relay to increase the voltage to the blower but I think it will only end up replacing the blower more often. All ideas are welcome..

 

[GNVenom]

There should be a noticeable motor speed change between medium and high speeds. Could be the motor bearings slowing you down, or a problem with the control head/driver module. Here is some reading and tech material:

http://www.installationinstructions.com/FYI/climatecontroltech.pdf

 

[Cme2fly]

I replaced the motor years ago thinking that could possibly be my problem. Thanks for the info.

 

[turbofish38]

I was thinking on certain functions that High was the same speed as Auto. For example when you have the temp set at 65 with the AC on than either setting is blowing the fan as hard as it can.


Hey John. You need to fine tune that page. The 84-86 control head pictured is the Canadian part with the Celsius scale. And the numbers on the back indicate what model it came out of. The bottom head was only used on 81-83 Riviera.
E=Riviera
B=LeSabre,Electra,Park Ave
G=Regal

I dont think the E/B units will work in the Regal. Unless you know something I don't?:smile:

 

[Cme2fly]

I was thinking on certain functions that High was the same speed as Auto. For example when you have the temp set at 65 with the AC on than either setting is blowing the fan as hard as it can.


Hey John. You need to fine tune that page. The 84-86 control head pictured is the Canadian part with the Celsius scale. And the numbers on the back indicate what model it came out of. The bottom head was only used on 81-83 Riviera.
E=Riviera
B=LeSabre,Electra,Park Ave
G=Regal

I dont think the E/B units will work in the Regal. Unless you know something I don't?:smile:

My AC is set to 65 which is probably the reason for no change. Do you know of any blower motor upgrades?

 

[turbofish38]

I have the same problem. No bigger motors that I have found. Not any plug and play anyway.

 

[GNVenom]

Hey John. You need to fine tune that page. The 84-86 control head pictured is the Canadian part with the Celsius scale. And the numbers on the back indicate what model it came out of. The bottom head was only used on 81-83 Riviera.
E=Riviera
B=LeSabre,Electra,Park Ave
G=Regal

I dont think the E/B units will work in the Regal. Unless you know something I don't?:smile:

Eric, that's interesting info. I was going by whatever I could disseminate from the service manuals. I have several of these units and have built a test set to diagnose the electronics. Seems there are many similarities between them, but for some reason there are fewer diverter drivers within the circuitry on certain models (some have a defrost output, some don't). I believe they can be repaired as long as the custom masked processor isn't bad. As far as I have seen, they are all pretty much interchangeable, E body, B body and G body. I don't have a car I can test otherwise, I'd be pulling controllers.

 

[turbofish38]

I can tell you the Riviera doesn't use a programmer like the Regal or Park Ave. It uses motors or actuators down on the air valves. IIRC there are 5 of them on a car. No vacuum actuators. I've had what seems like a dozen Rivs with the C68 and all of them needed some tweaking at one time or another. It was sure cheaper to replace the actuator than the programmer anyway.

 

[A2000RICH]

Eric, that's interesting info. I was going by whatever I could disseminate from the service manuals. I have several of these units and have built a test set to diagnose the electronics. Seems there are many similarities between them, but for some reason there are fewer diverter drivers within the circuitry on certain models (some have a defrost output, some don't). I believe they can be repaired as long as the custom masked processor isn't bad. As far as I have seen, they are all pretty much interchangeable, E body, B body and G body. I don't have a car I can test otherwise, I'd be pulling controllers.

there are important differences in the G body units and E and B units------even though they look nearly identical they will not work in a regal------the G body is the only one that has vacuum actuators as far as i can tell-----the others are electrically actuated and do not use the intermediate "programmer box" that the Regal uses------the programmer runs open loop and provides no feedback to the processor-----it is a small external box that has small electrically operated vacuum solenoids that operate the air diverters------when a E or B controller is installed in a G body car they actually work for about a minute till they "time out" looking for actuator feedback and then go into a inoperative mode where the lights blink to signal a fault condition---------the only differences are the program in the processor and a few extra components on the B and E boards........the only units that have the correct program are the ones that are actually marked on the processor 3621 (canadian) and 3620 (us) --------i have always wanted to find the time to build a circuit that would "fool" the E&B units into thinking they were attached to the electrical actuators but like a thousand other projects it hasn't happened yet.............RC

 

[wildcard]

I have the same system in my Ttype and I have not seen any difference between auto or high. I did replace my fan and did notice a difference in the amount of air coming out, but no difference when going from auto to high. I've tried swapping the head unit and the circuit card in the airbox. Good luck with this.

 

[GNVenom]

Richard, we gotta put our heads together. Check this link:

http://www.installationinstructions.com/FYI/climatecontrolpcboards.pdf

I have put together some data that might help understand the differences between the models, and you have probably done the rest.

Check it out.

 

[A2000RICH]

Richard, we gotta put our heads together. Check this link:

http://www.installationinstructions.com/FYI/climatecontrolpcboards.pdf

I have put together some data that might help understand the differences between the models, and you have probably done the rest.

Check it out.

i'll get my notes together sometime and call you-------i have a gaggle of notes on these things--------i have converted quite a few of my cars to C-68 over the years-------i personally like them-------before i started driving TR's i hadn't owned a car that didn't have automatic climate control------i never seemed to adapt to those primitive switches and sliders gizmo---------i even converted the GNX that i drive to C-68.............RC

 

[XxDarkSidexX]

subscribed! even though I really just want to know how to replace the ears on mine, but I got one in my 86. only thing wrong is 1 light is out on the 76th degree.

touch button in 86 is bitching! goes great with a sunroof
DS

 

[A2000RICH]

subscribed! even though I really just want to know how to replace the ears on mine, but I got one in my 86. only thing wrong is 1 light is out on the 76th degree.

touch button in 86 is bitching! goes great with a sunroof
DS

best way to fix the ears is find a controller from an E or B body car and swap out the boards--------they are almost never broken---------on the other hand its almost impossible to find a G body car where the tabs aren't broken---------something about the way they attach to the dash causes them to be distorted and breaks them over time---------i see the things for sale all the time on e-bay and they always say they are for GN's---------sure bet???----if the tabs are not broken its not for a G body--------90% of the time it goes like this-------i challenge them and say "are you sure its from a regal"-------they usually say yes-----tell them i doubt it since the tabs aren't broken and ask what the purple number stamped on the box says---------GN's always say G-3620 or 21-------they usually say its E or B-XXXX-------i tell them its proof they are wrong (not honest)-------i then offer to buy the case at a discount to get good tabs-------works about half the time---------send me a message with address and i will send you a replacement diode to fix your 76er-------its really easy..........RC

 

[turbofish38]

if the tabs are not broken its not for a G body--------90% of the time it goes like this

+1! I don't know how many times I've seen this. But what's really bad is that there are a lot of B/E's on eBay with broken tabs. In all my years I've only found 1 NA Regal with C68.

I think they break because the assembly guys torqued the screws down to tight.

 

[A2000RICH]

+1! I don't know how many times I've seen this. But what's really bad is that there are a lot of B/E's on eBay with broken tabs. In all my years I've only found 1 NA Regal with C68.

I think they break because the assembly guys torqued the screws down to tight.

perhaps it was the same idiot that installed the top dash speaker grills...RC

 

[Turbo1dr]

This is some interesting news. I have the C68 option installed in my 78 Malibu. I pulled the entire unit from an 84 Turbo Regal. I've bought several head units plus a couple of solenoid boxes and I've never been able to control the vacuum solenoids automatically. I gave up and fixed it so the air comes out the vents all the time...even in the winter. I'll have to check the numbers to see which units I have.



I also have a full working system from an 86 Buick full size rear wheel drive wagon....this one has actualtor motors instead of vacuum diaphrams.




EDIT: I just looked at three head units I have. Two of them are part number 25517721. E 3474 is stamped in ink on the rear while the other one does not have the stamp. The third unit came from a full size RWD Buick wagon...25523172 B 3616 is stamped in ink on that one. None of these will work on my car and neither will the one that's still in the car.....bummer.

 

[BILL HAINES]

Rich, Boy I,m Glad To Read Your Post. My Friend "john" Gnocide Was Talking My Into Installing C68 In My Gn,as You And He Did In His Car. We Sweat Out Butts Off Removing C68 From A 86 Full Size Wagon, Got All The Wiring(different) But Was Tring To Get A Harness From A Gn. My Ac Head Numbers Are B-3616,soo I Don't Think That I'll Continue My Search, C68 Is Cool,but I'm Wandering If It Is Worth The Pain....

 

[A2000RICH]

Rich, Boy I,m Glad To Read Your Post. My Friend "john" Gnocide Was Talking My Into Installing C68 In My Gn,as You And He Did In His Car. We Sweat Out Butts Off Removing C68 From A 86 Full Size Wagon, Got All The Wiring(different) But Was Tring To Get A Harness From A Gn. My Ac Head Numbers Are B-3616,soo I Don't Think That I'll Continue My Search, C68 Is Cool,but I'm Wandering If It Is Worth The Pain....

i'm surprised john didn't tell you i have a complete manual on how to convert a c60 to a c68-----------and a list of what you need as well as what works and doesn't--------perhaps he forgot---------i did all that research in 93-94 when i converted my GNX----------i've done lots of cars since............RC