: ac blend door actuator



ctsvdubbz
08-16-11, 08:43 PM
anyone thats had ac problems.. anyone know where the blend door actuator is... i know theres more than one.. i think either 4 or 6 heard both.. but the one that switches from heat to ac... my ac lines are cold.. and theres a clicking behind the dash.. i dunno if there is seperate ones??? anyone know of or seen a diagram of the blend doors and all the other stuff thats behind the dash... ??? ANY help is greatly appreciated!!

CadzillaTN
08-17-11, 08:36 PM
If darkman can't help, you're screwed.. A bump nonetheless..

darkman
08-17-11, 10:10 PM
See attached.

ctsvdubbz
08-18-11, 03:35 PM
but where is it?? and does the whole dash have to come out??

Houdini
08-18-11, 03:50 PM
I haven't had a need to tear into the dash on the V but in my aurora (very similar setup) I was able to access most of those actuator motors when mine started to act up. I think I removed part of center console and was able to get up in there. On the passenger side I was able to access them by taking the glove box out. It would suck to have to take entire dash out to get to them. Good luck man.

darkman
08-18-11, 06:36 PM
but where is it?? and does the whole dash have to come out??

I don't know.

I have never worked on a car HVAC other than the hot water plumbing to the heater and throwing in a can of freon back in the old days when that was legal for do-it-yourselfers. If my AC goes out the car goes to the shop - preferrably the dealer since most of the parts are only available there.

ghettomike
12-31-11, 09:10 AM
Did you ever sort this out?
I've got a heat problem... Passenger side blows hot air, driver side cold.

JazMiller
01-09-12, 08:45 PM
Damn, mine just started with this now! Same same,... passenger side blows hot, driver side blows cold. (05 CTS-V).

ghettomike
01-09-12, 09:15 PM
i just pulled my whole cooling system apart, flushed the whole thing out. ran a hose through the heater core.
its better but not perfect. im going to find something for cleaning a cooling system and pop the hoses off the heater core and drop it into it.
i get more heat when im standing on the gas, if i let the car warm up it puts out very warm air, but not as hot as the passenger side..big improvement over how it was though.

JazMiller
01-09-12, 09:21 PM
Yeah I just put a coolant system on my list for the car this week. Maybe I'll have to focus on the heater core like Tommy did on his in this post:
http://www.cadillacforums.com/forums/cadillac-cts-first-generation-forum-2003/162830-blend-vent-motor-3.html

We're having a mild winter here so it's not uncomfortable yet. I had this on my spring to-do list but there's going to be a few chilly days before the warmer weather arrives here and I'll want more than passenger vents full and driver vents closed with heated seat on to keep me from freezing.

ctsvdubbz
01-18-12, 02:05 PM
still haveant sorted it out yet... got 2 blend door actuators instead.. i got heat my heats fine.. but clicks when i try n use the ac cuz the doors wont switch.. hopefully when the weather is a lil nicer i can fix this without tearing the whole dash out... but my problem is the total opposite my heat works fine and ac is cold and charged.. just the doors wont switch from heat to ac...

JazMiller
01-24-12, 10:11 PM
Hey GhettoMike, looks like the heater core is clogged on mine and is the culprit. My car's in the shop today for coolant flush and backflush of the heater core. It's actually in overnight since they didn't get the backflush done. The mechanic has told me that the core is pretty jammed up and is the reason it's hot for passengers but blows cold on driver side. Actually said that he has seen this exactly before on more than one V.

Looking forward to getting warm air on my feet when this is fixed...! It's been a long time since I've been cosy behind the wheel. Actually thought of letting the Mrs. take the wheel when we were going out the other evening so I could sit on the warm side of the car! :bonkers:

ghettomike
01-24-12, 10:47 PM
got mine working better.
i got rad flush liquid, disconnected the heatercore poured it in left it for 20-30 min hosed it out.
worked better, still not perfect, so a couple days later i hooked a compressor up to it to blow everything i could out, a little bit of gunk blew out, got all the liquid out of it i could, poured more rad flush in and let it sit a few hours. went back out hooked the hose up and just kept it running for a bit, then put the compressor on it again and blew it out.
filled the heatercore back up with coolant (a dry heater core makes weird noises of water swooshing around in your dash, and sometimes getting air out isnt easy) and let it warm up.
seems to be working really well, slightly hotter on the passenger side but not much. i may use a laser heat sensor on the air out of all the vents this weekend if i can get a chance while @ work.

JazMiller
01-25-12, 11:03 PM
The dealership I took mine in to did a power flush on the heater core and re-bled the cooling system. Reported better heat but not as good on drivers side as the passenger side. They repeated, then hooked up some lines and put heavy duty coolent agent cleaner in and let it sit overnight. This morning's power flush kicked out a lot of debres, and now she's heated up like a champ. Issue resolved.

Telling them where to look probably saved me some diagnostics time ($$). They didn't want to go straight to the heater core, but I insisted and that was probably a good thing.

Thanks all (and the guys in the Tommy's thread) for the pointers!

SOUTHWESTCADILLAC
02-18-14, 02:06 PM
You pull the DASH if it is the upper right hand mode door...and it sets code B0248