Auto Ac Is Retarded!

WhiteRabbit · January 27, 2010

Ughh. I just don't understand this dam thing!. In the morning set to Manual I have it tuned to 76 degrees. It's pumping 100 degree air at maximum and I"m dying. HOwever on the way home at night. The air set at 80 is barely warm!.

It's very inconsistent. One day 76 feels like 90 and another day 80 feels like 72.

Another issue is. during the winter most people typically turn off the AC part of the system. YOu can leave it in auto but just make sure the snowflake button is not lit. The problem is. God forbid you get behind some car or truck who's burning more oil than they should and you click the Recirc button If your temp was set to 72 now the AC will come on. But the Snowflake button WILL NOT LIGHT UP. but you can feel the air going cold.

I removed the fuse under the hood that controls the DRL's. Would that affect the Sensor on my dash? The auto headlights still work fine and I read somewhere that the auto AC will use that to determine the SUN LOAD.

I can take my truck into the dealership but thought I'd ask others if they understand how the auto AC is suppose to function.

Thanks!

Stevens03 · January 27, 2010

Dang, I LOVE it in mine. Set it and leave it alone.

I set the desired temp around 72-73 and push the auto button. It does the rest and I hardly every touch it. For me, it's worked flawless. If I have a chil, I'll bump it up a few degrees, if I'm hot, lower it a few.

You shouldn't be having all those issues unless you have a bad temp sensor. I had a Caddy Seville that had those issues. The temp was NEVER right till they replaced a sensor.

Bish · January 27, 2010

Dang, I LOVE it in mine. Set it and leave it alone.

I set the desired temp around 72-73 and push the auto button. It does the rest and I hardly every touch it. For me, it's worked flawless. If I have a chil, I'll bump it up a few degrees, if I'm hot, lower it a few.

You shouldn't be having all those issues unless you have a bad temp sensor. I had a Caddy Seville that had those issues. The temp was NEVER right till they replaced a sensor.

+1 Mine stays at 75 in the winter and if I get a little chill, I bump it up a few degrees. Overall, I am very happy with the way mine works. I'm guessing you have something wrong with yours.

emwolb469 · January 27, 2010

I think what it does is when it starts the heater and your cab is cold, it blows really hot air to bump the temp up to the desired temp faster and when it gets close, it slows the air down and lowers the temp. I get annoyed with mine also because it does the same thing. It will blow super hot air and then blow cold air. I think that it over-shoots the desired temp and then blows cold air to compensate....At least thats what I convince myself that it is doing

WhiteRabbit · January 27, 2010

I think what it does is when it starts the heater and your cab is cold, it blows really hot air to bump the temp up to the desired temp faster and when it gets close, it slows the air down and lowers the temp. I get annoyed with mine also because it does the same thing. It will blow super hot air and then blow cold air. I think that it over-shoots the desired temp and then blows cold air to compensate....At least thats what I convince myself that it is doing

Well I thought that might be the case too but the only inconsistency in that theory is at night on my way home. Still have the AC Set to 76 and instead of blowing 100 degree HOT air at max like it does in the morning. NOw it's blowing Cold air or I'd say outside air thats a bit chilly. I try like some of you.. bump the degrees up one or two. NO Change. Its not until I hit 80+ before it gets slightly warmer.

Where is the Temp sensor? I just hate taking the truck to the dealership. They always want to keep it and put you in a lousy Rental.

texasblueline · January 27, 2010

I think what it does is when it starts the heater and your cab is cold, it blows really hot air to bump the temp up to the desired temp faster and when it gets close, it slows the air down and lowers the temp. I get annoyed with mine also because it does the same thing. It will blow super hot air and then blow cold air. I think that it over-shoots the desired temp and then blows cold air to compensate....At least thats what I convince myself that it is doing

I feel the same about mine. I haven't really had to run the AC much since I've had it, but on heat it seems to overshoot the temperature and try to compensate by then blowing cool air which is annoying when you want it warm. I miss just being able to set the dial to a certain hot/cold setting and know that the air coming out will consistently be about the same temperature. I also miss having a dial I can just reach over and adjust the temperature or fan speed by feel, on these auto systems I gotta look and make sure I'm pushing the correct little button.

Anyone know if it's a direct swap to install the base HVAC unit in a truck that's currently got the auto unit? I'd hope it's just plug and play but with these trucks it may take some programming too. If it's not too much trouble I may decide to go that route eventually if I still am not too enthralled with the auto unit. They're only about $75 on eBay last I looked.

sc4808 · January 27, 2010

Dang, I LOVE it in mine. Set it and leave it alone.

I set the desired temp around 72-73 and push the auto button. It does the rest and I hardly every touch it. For me, it's worked flawless. If I have a chil, I'll bump it up a few degrees, if I'm hot, lower it a few.

You shouldn't be having all those issues unless you have a bad temp sensor. I had a Caddy Seville that had those issues. The temp was NEVER right till they replaced a sensor.

+1

pm26 · January 27, 2010

I have a manual A/C and love it. I am not too lazy to reach for the levers and adjust the temperature once in a while. I would not want auto A/C even if they gave me $ 400 credit for it.

66nova · January 27, 2010

Dang, I LOVE it in mine. Set it and leave it alone.

I set the desired temp around 72-73 and push the auto button. It does the rest and I hardly every touch it. For me, it's worked flawless. If I have a chil, I'll bump it up a few degrees, if I'm hot, lower it a few.

You shouldn't be having all those issues unless you have a bad temp sensor. I had a Caddy Seville that had those issues. The temp was NEVER right till they replaced a sensor.

+1 more. Mine works great!

I have noticed that most of the people that have been complaining about the Auto AC recently have a 09 or 10 model. I wonder if something has changed?

Diesail · January 27, 2010

Mine works great too, hardly ever touch it. It uses outside and inside temp sensors to decide what to do. Maybe one of your sensors is out of wack. Might have the dealer check it.

Nick The Great · January 27, 2010

Dang, I LOVE it in mine. Set it and leave it alone.

I set the desired temp around 72-73 and push the auto button. It does the rest and I hardly every touch it. For me, it's worked flawless. If I have a chil, I'll bump it up a few degrees, if I'm hot, lower it a few.

You shouldn't be having all those issues unless you have a bad temp sensor. I had a Caddy Seville that had those issues. The temp was NEVER right till they replaced a sensor.

+1 more. Mine works great!

I have noticed that most of the people that have been complaining about the Auto AC recently have a 09 or 10 model. I wonder if something has changed?

Nope. I have a 2007 and the Auto A/C sucks!

I haven't run it in a year now, but in the summer, I'll get in, start it, and it'll blow piss-hot hurricane force air on my face. The winter is worse, kinda like a blizzard for 10 minutes. I feel like I need a ski-mask.

I liked the old system on my 99. If I wanted it warmer (and the engine had heat), I'd crank the temp. dial towards the right, and increase the fan speed. If I'm hot in the summer, put the dial on COLD until I'm cooled down, Then decrease the fan speed. I'm always monkeying with mine, trying to decide whether I'd rather be 72° or 73°.

Stex · January 27, 2010

You do not have to use the auto mode. Then you have the manual just like days of old...I usually go with with auto unless I do not like the fan speed or mode and then just change it...much like the old systems, just buttons instead of dials and slides...If you think 'Otto' is going to get it just right, you will be mad at it a lot!

qwikz74 · January 27, 2010

90% of new cars and trucks have auto A/C nowadays and most people dont know it.

LittleRockGixxer · January 27, 2010

Dang, I LOVE it in mine. Set it and leave it alone.

I set the desired temp around 72-73 and push the auto button. It does the rest and I hardly every touch it. For me, it's worked flawless. If I have a chil, I'll bump it up a few degrees, if I'm hot, lower it a few.

You shouldn't be having all those issues unless you have a bad temp sensor. I had a Caddy Seville that had those issues. The temp was NEVER right till they replaced a sensor.

+1 Mine stays at 75 in the winter and if I get a little chill, I bump it up a few degrees. Overall, I am very happy with the way mine works. I'm guessing you have something wrong with yours.

+1

High Plains Drifter · January 28, 2010

Dang, I LOVE it in mine. Set it and leave it alone.

Bingo. This is one of the nicest features of any vehicle I've ever had. Set it, forget it. No muss, no fuss.

It's really convenient, easy to operate. I just set the temp, that's it. Need more heat, bump it up a few degrees. Cooler, set it lower. Everything is automatic.

This system is great.