AC/Heater Blower motor won't shut of

1995 BUICK PARK AVENUE
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DCHENEY
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Electrical problem 6 cyl Front Wheel Drive Automatic 183550 miles
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The AC/Heater blower motor runs all the time even with ignition off. Had to remove 30 amp fuse in engine compartment to shut off blower motor. Electrical diagram shows 30 amp fuse powers a blower motor relay. Found 6 relays under the fuse bank in engine compartment. With 30 amp fuse reinstalled disconnected each relay one at a time. The blower motor still keeps running. Could not find any more relays in the engine compartment. Please tell me where the AC/Heater blower motor relay is.

Thank you.
Jun 18, 2008 at 12:52 PM
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MASTERTECHTIM
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It sounds like you have a relay stuck on, here is its location so you can remove and replace it.


https://www.2carpros.com/forum/automotive_pictures/139033_ac_7.jpg

Here is a guide to help you test to confirm the problem. https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit Please let us know what happens so it will help others
Jun 21, 2008 at 5:59 AM
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JOHNBAILEY
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I have a 95 park ave but where the blower motor relays are they are not there not even a connection to plug one in. Where else could they be?
Sep 7, 2012 at 1:02 AM
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STRAILER
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Hello,

I have seen where the fan speed control module will short out causing the fan to stay one as well. Here is a diagram that will show you where it is.

Please let us know what happens.

Cheers, Ken
Image (Click to enlarge)
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Aug 17, 2017 at 7:48 PM
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FELICIA110
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Air Conditioning problem
1996 Buick Park Avenue 6 cyl Two Wheel Drive Automatic 75000. miles

when I returned home today my blower motor would not shut off. It is continuously running. Where do I locate the relay for the blower motor?
Aug 19, 2019 at 6:34 PM (Merged)
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RASMATAZ
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Hi felicia110, Welcome to 2carpros and TY for the donation and selecting us as your auto repair site Feel free to ask questions at anytime and Merry Christmas and a Happy New Year 2010 Location: Center rear of engine compartment see road map below There's 2 relays one for the low and one high speed relay-No.8 is the low and high is no.9 -Check and test both


https://www.2carpros.com/forum/automotive_pictures/12900_blower_relay_7.jpg

Aug 19, 2019 at 6:34 PM (Merged)
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FELICIA110
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I found those disconnected them and the blower still runs, must be something else
Aug 19, 2019 at 6:34 PM (Merged)
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RASMATAZ
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Put the relays back in place I want you to remove fuse no.3 30amp in the right underhood fuse block-did the blower motor continues to run?
Aug 19, 2019 at 6:34 PM (Merged)
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FELICIA110
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yes it stopped running
Aug 19, 2019 at 6:34 PM (Merged)
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84DAVEY
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cab fan heater/air conditioner fan - continues to run after key switch is shut off, and key taken out of iginition. I disconnected the battery and let the car sit over night, and then re-connected the battery in the morning, upon re-connection the fan took off running again.
Aug 19, 2019 at 6:34 PM (Merged)
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RASMATAZ
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The red and purple wire are shorted together, where this 2 wires meet at is at the high speed blower relay socket-try clean out the relay socket could be corrosion that's causing it-


https://www.2carpros.com/forum/automotive_pictures/12900_blower_relay1_1.jpg

Aug 19, 2019 at 6:34 PM (Merged)
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SATURNTECH9
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Do you have auto climate control? Also do you have a multi meter to do some testing?
Aug 19, 2019 at 6:34 PM (Merged)
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FELICIA110
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thank you for your help. it must be in the harness in in the control panel, I have cleaned the relay and the socket but still blows
Aug 19, 2019 at 6:34 PM (Merged)
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84DAVEY
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yes the car has auto climate control - but no i do not have a mutimeter
Aug 19, 2019 at 6:34 PM (Merged)
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RASMATAZ
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That red and purple wire are touching, you have remove the relays and it still come on, but when your remove the fuse it stops-The fuse is powered at all time thru the red wire if it touches the purple wire the blower motor will continuesly run-this is what's happening
Aug 19, 2019 at 6:34 PM (Merged)
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84DAVEY
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hello?
Aug 19, 2019 at 6:34 PM (Merged)
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FELICIA110
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ok will check it out throughly in the morning thank you so much
Aug 19, 2019 at 6:34 PM (Merged)
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SATURNTECH9
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On the center rear of the engine compartment you will find the blower control module.It has a purple wire gray wire with a black stripe a black wire and red wire.Unolug it and see if the blower motor shuts off?Also a multi meter would be great to test some things.
Aug 19, 2019 at 6:34 PM (Merged)
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BRAD1234
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My heater fan stays on high speed even when the ignition is off and key removed. I think it is the blower motor resistor/module that has failed. Can you tell me if this is true and if so how to get to the module?
Aug 19, 2019 at 6:34 PM (Merged)
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RASMATAZ
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Inspect and test the blower motor control module at center rear of engine compartment
Aug 19, 2019 at 6:34 PM (Merged)
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RASMATAZ
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I gave you for an Auto HVAC system Park Avenue and Ultra


https://www.2carpros.com/forum/automotive_pictures/12900_hvac_5.jpg

Aug 19, 2019 at 6:34 PM (Merged)
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RASMATAZ
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https://www.2carpros.com/forum/automotive_pictures/12900_blower_motor_control_module_2.jpg

Aug 19, 2019 at 6:34 PM (Merged)
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[email protected]
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My air condition fan quite. Firsts it continued to run even after the key way off. I unpluged fan pluged it back up and turned key on and it worked. When I got back in it that afternoon it would not work. I have replaced the fan motor, checked fuses, replaced module. Now I have found out it has a fan motor resistor. It is quite expensive and I have no ideal if I can replace it or where its located. Any help or pointers you can give me would be appriciated.

Thanks

Paul Brown
Aug 19, 2019 at 6:34 PM (Merged)
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RASMATAZ
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Are we talking about the condenser fan or the blower motor, if its the blower motor is doesn't have a resistor, you have replaced the blower control module -check fuse no.2 10amp in the relay center and also fuse no.3 30amp in the underhood fuse box if okay your problem is coming from the HVAC programmer AC/Heater EWD


https://www.2carpros.com/forum/automotive_pictures/12900_b1_16.jpg


https://www.2carpros.com/forum/automotive_pictures/12900_b2_16.jpg


https://www.2carpros.com/forum/automotive_pictures/12900_b3_9.jpg


https://www.2carpros.com/forum/automotive_pictures/12900_b4_4.jpg

Aug 19, 2019 at 6:34 PM (Merged)
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HZAUTO
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Heater problem
1989 Buick Park Avenue 6 cyl Front Wheel Drive Automatic 99k miles

When I turn off my car the blower continues to run. I understand that I need to replace the blower module. My question is where the module located and where can I find a cheap replacement?
Aug 19, 2019 at 6:34 PM (Merged)
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BLUELIGHTNIN6
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have you already checked the blower motor relay? it could also cause this to happen..try websites such as ebay.com or craigslist for used parts and call around local salvage yards as well.
Aug 19, 2019 at 6:34 PM (Merged)
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RASMATAZ
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Why don't you try removing the blower motor relay and see what happens could be sticking internally
Aug 19, 2019 at 6:34 PM (Merged)