98 Olds Bravada lots of hot air

jefnmic · 04-09-2008, 03:56 PM

My 98 Olds Bravada only likes to blow hot air. I looked at the post by Cliffg8 sounds just like his problem that he had and looked at the air mix door moving it back and forth but for some reason I don't think the actuator is working. The door just wants to move back to the same postion each and every time. So, is the actuator bad or what controls the actuator bad....? It does blow cold air when the door is moved to a certain position. Any input would be greatly appreciated.

Redog · 04-09-2008, 04:49 PM

Were they vacuum controled in 98?

Do you feel it move when turning the knobs? Sometimes in the cold months I gotta turn the Alero's knobs slow, or the same thing happens

jefnmic · 04-09-2008, 05:01 PM

I had someone moving the knob switching back and forth from cold and hot and I watched the air mix door and it would not move on it's own. I can move the door by hand but when I let go it moves back to the same position everytime no matter where the knob it positioned.

Oldsguy · 04-10-2008, 11:44 AM

If it is vacuum controlled there may be a leak in the control head manifold or in the tube to the door actuator.

04-09-2008, 03:56 PM	#1 (permalink)
jefnmic Junior Member Join Date: Apr 2008 Posts: 2	98 Olds Bravada lots of hot air My 98 Olds Bravada only likes to blow hot air. I looked at the post by Cliffg8 sounds just like his problem that he had and looked at the air mix door moving it back and forth but for some reason I don't think the actuator is working. The door just wants to move back to the same postion each and every time. So, is the actuator bad or what controls the actuator bad....? It does blow cold air when the door is moved to a certain position. Any input would be greatly appreciated.

04-09-2008, 04:49 PM	#2 (permalink)
Redog Alero Chapter Secretary Join Date: Aug 2006 Location: Newtown, PA Posts: 632	Were they vacuum controled in 98? Do you feel it move when turning the knobs? Sometimes in the cold months I gotta turn the Alero's knobs slow, or the same thing happens __________________ Me 2000 Alero running 14's 1985 Delta 88 w/1968 350 rocket 2005 Nissan Altima (her's)

04-10-2008, 11:44 AM	#4 (permalink)
Oldsguy Administrator Join Date: May 2004 Location: Lees Summit MO Posts: 2,553	If it is vacuum controlled there may be a leak in the control head manifold or in the tube to the door actuator. __________________ Dan '46 2 door

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04-09-2008, 05:01 PM	#3 (permalink)
jefnmic Junior Member Join Date: Apr 2008 Posts: 2	I had someone moving the knob switching back and forth from cold and hot and I watched the air mix door and it would not move on it's own. I can move the door by hand but when I let go it moves back to the same position everytime no matter where the knob it positioned.