Question about 1992 Buick Roadmaster

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A/c isnt blowing out air hard enough

I have a 92 buick roadmaster. my a/c isnt blowing out air hard enough. i have a relay switch running from my battery to the blower motor. i was told the control module is not putting out power to the blower motor so i can change speeds. all i can do is change temps. thats the reason for the relay switch. what can i do?

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  • Buick Master
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Rheostat playing up but where it is or how you get to it i havent a clue,sorry not many of these beasts here in spain.

Posted on Jun 28, 2009

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Why does my 1993 buick roadmaster heat fine but most times the blower won't blow on my windshield to defrost?


Are you referring to the blower NOT blowing air or it is blowing air but will not direct the flow to defrost?

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My ac is not blowing air, what should i do?


Well there is allot of open area but if nothing runs I would start looking for the fuse and/or relay. If that isn't the problem then I would look at the blower switch itself. Don't bother with the resistor pack because if this was bad then it would still run on high. Freon will not keep the blower from running. Also since the evaporator was replaced it would look around for any connections that was overlooked and not plugged back in.

Oct 04, 2012 | 1992 Buick Roadmaster

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Where is the heater motor at in a 1992 buick roadmaster


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1.image

Oct 28, 2010 | 1995 Buick Roadmaster

1 Answer

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Sep 14, 2009 | 1992 Buick Roadmaster

1 Answer

Blower motor is good but blow


You have a problem with a baffle controller in the plentum(blower duct);
ck the heater fuses in the box under the driver dash and also ck the electronic control center box, (under hood I think) and look for a heater/blower relay and try to swap it with another relay that may be indentical just for test ;and replace as necessary. I think the baffle controls are electrical because they switch properly in my '91 without the motor running, ie, not vacuum controlled.
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Mar 27, 2009 | 1992 Buick Park Avenue

1 Answer

Blower motor will not run on the a/c system. the power module has been removed. can i jury rig some sort of system to get high? and low blower speeds? this is a 92 buick roadmaster


yes sir you can jerry rig a toogle switch. ran a hot wire, to the pos. side on the blower moter, and ground the blower motor to the frame of the car..not a perfect fix, but cheap and will work..keith..

Mar 12, 2009 | 1992 Buick Roadmaster

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