92 SE heater/AC fan - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 11-01-2003, 06:37 PM   #1
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Default 92 SE heater/AC fan

I have a 92 SE and am having problems with the heater. I don't know if it is a bad switch or not but I get nothing when I turn on the heater/AC fan switch. It was working intermittenly last week but now it won't do anything. I have pulled the heater and AC control panel and don't see any loose wires. Any help on how to troubleshoot this problem will be greatly appreciated. This is my first post on the forum but I have come here for info before. Thanks.
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Old 11-01-2003, 06:59 PM   #2
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Welcome to the club. Someone will get back to you on your heater problem. Probably wilwren and he is from OR. There are alot of members on this forum that can help more than I could.
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Old 11-02-2003, 04:23 PM   #3
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Turn the fan on high (make sure the ignition is on) and then go and tap where the fan motor is. If you get nothing, then disconnect the wiring harness at the fan and test the voltages at the different fan speed levels. Let us know what you get.
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Old 11-02-2003, 08:38 PM   #4
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Where in Oregon?
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Old 11-02-2003, 09:33 PM   #5
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Portland. Haven't had a chance to check voltage yet as my wife has been gone with the car all day. I will post the readings when I get a chance.
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Old 11-02-2003, 09:41 PM   #6
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Let me know if you need any help I've got some good manuals, tools (including scantool), etc. I'm in Albany.
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Old 11-02-2003, 10:29 PM   #7
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Thanks, willwren!
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Old 11-03-2003, 01:30 AM   #8
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And I'm bored. Not working the next week or two at least......just had minor surgery. Let me know via pm if you need a hand. I'm up for a roadtrip!
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Old 11-04-2003, 06:19 PM   #9
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Tapping the fan housing causes the fan to work. Unfortunately, it only lasts until the car is turned off. Tapping again will restart the fan.
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Old 11-04-2003, 07:11 PM   #10
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sorry to say, but i bet the bearings are shot... that was what mine would do on my 90. a new motor fixed it right up!
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