2000 Bravada climate control

scoutdad57 · February 24th, 2007, 07:27 PM

I'm not getting full heat output. Even with control maxxed out I get a medium level of heat with occasional bursts of cold. Replaced the thermostat. Same thing.

Any ideas anyone?

Thanks

Redog · February 25th, 2007, 08:41 AM

Could be a blown resistor somewhere around the blower motor

scoutdad57 · February 25th, 2007, 09:28 AM

Actually, I get plenty of air force out of the vents, its just that the temperature of the air is not as hot as it used to be. Would a blown resistor cause this??

ohiyesa320 · February 28th, 2007, 09:42 PM

Starting this morning, I have been having the same problem. I have full air from the blower, but it is no longer hot. At best it is luke warm. I first saw the thread from the 98 recommending using the "cut here" access panel. I tried that, but it looks like my door is stuck into the cold position, or my 2000 doesn't have a door. Also, the air that comes out of that open access panel when the car is running is still only luke warm.

My hands are too big to fit into the tiny access hole. I then poped down the Glove compartment, and both actuators are working for direction of flow, and AC. I don't see an actuator for the heat/cool adjustments. I am currently in Wolcott, Colorado (at 9000 feet) and it is COLD and SNOWY here. Any help would be appreciated.

Redog · March 2nd, 2007, 08:24 PM

Quote:

Originally Posted by scoutdad57

Actually, I get plenty of air force out of the vents, its just that the temperature of the air is not as hot as it used to be. Would a blown resistor cause this??

Maybe the coolant thing could be the Thromo stuck open, never allowing the car to reach an operating temp

American Lead · March 8th, 2007, 03:07 PM

It could be one or more of the following:

Low coolant level
incorrect thermostat
restricted coolant flow through heater core
heater hoses plugged
mis'adjusted control cable
sticking heater controll valve
vacum hose leaking/blocked
vacum motors busted
blocked air inlet
inoperitive blower moter
oil res in heater core fins
dirt on heater core fins

I hope this helps.

richard gabrisch · March 18th, 2007, 09:16 AM

I am haveing the same problem and none of the above worked. My heater will thorw out some heat then I hear a small noise from high under the dash and the temperture changs; if it was hot it turns to cool and if it was cold it turns to warm.
The same thing happens in the A/C mode: hot to cool -- or cool to hot.

Thanks for help
Rich

American Lead · March 18th, 2007, 05:47 PM

Interesting... Has anyone had any luck fixing their's yet... I will ask a few more people amd see what I can come up with.

Welcome to the site Rich

scoutdad57 · March 18th, 2007, 06:09 PM

I have replaced the thermostat - - no dice didn't help, I'll keep trying. Damn cars didn't used to be so complicated to fix.

American Lead · March 19th, 2007, 01:13 PM

You said it, they sure don't make them like they used to. I think I might call the GM dealer here and see if they can tell me anything. Good luck trying to fix yours.

Oldsguy · March 19th, 2007, 03:21 PM

It's a computer thing! My wife's '99 LeSabre does something similar, no cold air out the upper vents, just the lowers and the defrost vents. I hate it and know it is air management but darn it all with all the sensors and damper doors and computers and whiz bangies. Sheesh!

richard gabrisch · March 20th, 2007, 07:16 AM

My mechanic says he has found the problem with a motor. The motor is located way up under the dash on the right side. He can't find a replacement motor yet. Even if he can find it he says he doesn't know how to get to the F%#K*&g thing. He locked it into a prosition where it gives heat all the time and it doesn't make the noise. The setting don't work neither does the AC.
I will keep you all informed as to what happens.

Rich

Boldsmobile · June 24th, 2009, 10:57 AM

Actuator motor that runs a door to divert hot to cold. Swing the glove box door out past the stop and you can get to the motor.

See this post:

http://classicoldsmobile.com/forums/...e-control.html

squirtacious · June 24th, 2009, 07:12 PM

Yeah if it's not the actuator motor. Feel the heater hoses going into the heater core if one is hot and the other not you have a plugged heater core. I worked for a Chev/Olds dealer back then and I don't know how many s-10 heater cores I did under warranty. Turns out there is an assembly plant in Mississippi that had so much mineral content in their water that it mixed with the dexcool and turned to mud. We called it Mississippi mud. There was a service bulletin that had a long drawn out flush proceder that used the trusty old "prestone radiator cleaner" that powder two part acid in a can that worked pretty good but if they were too far gone we just replaced the cores. Prestone has since quit making that stuff now I am beside myself cuz nothing else worked as well, not even close.

kurtdaniel · October 28th, 2009, 09:22 PM

The exact same thing is happening on my car.. It is intermittent, but incredibly uncomfortable when it occurs..it might affected by the egr valve..

February 24th, 2007, 07:27 PM	#1 (permalink)
scoutdad57 Junior Member Join Date: Feb 2007 Posts: 3	2000 Bravada climate control I'm not getting full heat output. Even with control maxxed out I get a medium level of heat with occasional bursts of cold. Replaced the thermostat. Same thing. Any ideas anyone? Thanks

February 25th, 2007, 08:41 AM	#2 (permalink)
Redog Alero Chapter Secretary Join Date: Aug 2006 Location: Newtown, PA Posts: 1,145	Could be a blown resistor somewhere around the blower motor __________________ Me 2000 Alero running 14's 2005 Nissan Altima (her's) 1967 Olds 330 motor sitting on a stand 1985 Delta 88 w/1968 350 rocket ( MURDERED )

February 28th, 2007, 09:42 PM	#4 (permalink)
ohiyesa320 Junior Member Join Date: Feb 2007 Posts: 1	same problem... Starting this morning, I have been having the same problem. I have full air from the blower, but it is no longer hot. At best it is luke warm. I first saw the thread from the 98 recommending using the "cut here" access panel. I tried that, but it looks like my door is stuck into the cold position, or my 2000 doesn't have a door. Also, the air that comes out of that open access panel when the car is running is still only luke warm. My hands are too big to fit into the tiny access hole. I then poped down the Glove compartment, and both actuators are working for direction of flow, and AC. I don't see an actuator for the heat/cool adjustments. I am currently in Wolcott, Colorado (at 9000 feet) and it is COLD and SNOWY here. Any help would be appreciated.

March 8th, 2007, 03:07 PM	#6 (permalink)
American Lead 2Blue 55 Join Date: Dec 2006 Location: Nova Scotia, Canada Posts: 455	It could be one or more of the following: Low coolant level incorrect thermostat restricted coolant flow through heater core heater hoses plugged mis'adjusted control cable sticking heater controll valve vacum hose leaking/blocked vacum motors busted blocked air inlet inoperitive blower moter oil res in heater core fins dirt on heater core fins I hope this helps. __________________ Classic cars are my drug of choice

March 18th, 2007, 05:47 PM	#8 (permalink)
American Lead 2Blue 55 Join Date: Dec 2006 Location: Nova Scotia, Canada Posts: 455	Interesting... Has anyone had any luck fixing their's yet... I will ask a few more people amd see what I can come up with. Welcome to the site Rich __________________ Classic cars are my drug of choice

February 25th, 2007, 09:28 AM	#3 (permalink)
scoutdad57 Junior Member Join Date: Feb 2007 Posts: 3	Actually, I get plenty of air force out of the vents, its just that the temperature of the air is not as hot as it used to be. Would a blown resistor cause this??

March 18th, 2007, 09:16 AM	#7 (permalink)
richard gabrisch Junior Member Join Date: Mar 2007 Posts: 2	I am haveing the same problem and none of the above worked. My heater will thorw out some heat then I hear a small noise from high under the dash and the temperture changs; if it was hot it turns to cool and if it was cold it turns to warm. The same thing happens in the A/C mode: hot to cool -- or cool to hot. Thanks for help Rich

March 18th, 2007, 06:09 PM	#9 (permalink)
scoutdad57 Junior Member Join Date: Feb 2007 Posts: 3	I have replaced the thermostat - - no dice didn't help, I'll keep trying. Damn cars didn't used to be so complicated to fix.

March 19th, 2007, 01:13 PM	#10 (permalink)
American Lead 2Blue 55 Join Date: Dec 2006 Location: Nova Scotia, Canada Posts: 455	You said it, they sure don't make them like they used to. I think I might call the GM dealer here and see if they can tell me anything. Good luck trying to fix yours. __________________ Classic cars are my drug of choice

March 19th, 2007, 03:21 PM	#11 (permalink)
Oldsguy Hot Rodder at heart Administrator Join Date: May 2004 Location: Lees Summit MO Posts: 5,360	It's a computer thing! My wife's '99 LeSabre does something similar, no cold air out the upper vents, just the lowers and the defrost vents. I hate it and know it is air management but darn it all with all the sensors and damper doors and computers and whiz bangies. Sheesh! __________________ Dan '77 Cutlass Supreme '46 2 door "The rocket 455.....it's a sledgehammer approach to a thumbtack world" LuxBlue of HAMB.

March 20th, 2007, 07:16 AM	#12 (permalink)
richard gabrisch Junior Member Join Date: Mar 2007 Posts: 2	My mechanic says he has found the problem with a motor. The motor is located way up under the dash on the right side. He can't find a replacement motor yet. Even if he can find it he says he doesn't know how to get to the F%#K*&g thing. He locked it into a prosition where it gives heat all the time and it doesn't make the noise. The setting don't work neither does the AC. I will keep you all informed as to what happens. Rich

June 24th, 2009, 10:57 AM	#13 (permalink)
Boldsmobile Registered User Join Date: Nov 2008 Posts: 57	Actuator motor that runs a door to divert hot to cold. Swing the glove box door out past the stop and you can get to the motor. See this post: http://classicoldsmobile.com/forums/...e-control.html __________________ Pete 1971 Cutlass 1983 Hurst / Olds 1996 Aurora - Autobahn 2001 Alero 2001 Aurora

June 24th, 2009, 07:12 PM	#14 (permalink)
squirtacious Registered User Join Date: Jun 2009 Posts: 37	Yeah if it's not the actuator motor. Feel the heater hoses going into the heater core if one is hot and the other not you have a plugged heater core. I worked for a Chev/Olds dealer back then and I don't know how many s-10 heater cores I did under warranty. Turns out there is an assembly plant in Mississippi that had so much mineral content in their water that it mixed with the dexcool and turned to mud. We called it Mississippi mud. There was a service bulletin that had a long drawn out flush proceder that used the trusty old "prestone radiator cleaner" that powder two part acid in a can that worked pretty good but if they were too far gone we just replaced the cores. Prestone has since quit making that stuff now I am beside myself cuz nothing else worked as well, not even close.

October 28th, 2009, 09:22 PM	#15 (permalink)
kurtdaniel Registered User Join Date: Aug 2008 Posts: 24	The exact same thing is happening on my car.. It is intermittent, but incredibly uncomfortable when it occurs..it might affected by the egr valve.. Last edited by kurtdaniel; November 3rd, 2009 at 06:33 PM..

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