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92 Eldorado heater fan will not shut off


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gpb56
New User

Aug 29, 2009, 6:59 AM

Post #1 of 3 (2210 views)
92 Eldorado heater fan will not shut off Sign In

I have an 1992 Cadillac Eldorado that has 73674 mi. The blower fan for the air and heater will not shut off, even when I shut the car off and take out the key. I have to remove the battery cable to get it to stop. The heater and air controls work fine but when I turn off the heater/air the blower keeps running. I've tried leaving the battery disconnected for 12 hours and touching the positive lead to ground before reconnecting, that didn't work. Any ideas as to my problem?


Double J
Veteran / Moderator
Double J profile image

Aug 29, 2009, 7:01 AM

Post #2 of 3 (2206 views)
Re: 92 Eldorado heater fan will not shut off Sign In

Replace the Blower Motor Control Module....


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Aug 29, 2009, 7:09 AM

Post #3 of 3 (2203 views)
Re: 92 Eldorado heater fan will not shut off Sign In

You most likely have a bad HVAC Power Module also known as the speed control module. It's located in the evap case on the firewall.


Double J, I guess you were posting while I was verifying the location.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



(This post was edited by Hammer Time on Aug 29, 2009, 7:10 AM)






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