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Old 01-10-2009, 02:35 PM   #1
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Default A/C - Heat issue

I've a 97 SSE with Auto Temp. control. When the system is in Auto, the fan continuously canges speed up-down. Is this a relay? If it is can you please let me know where is teh Relay located so that I can change. When not in Auto Mode, it runs normal.
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Old 01-10-2009, 02:46 PM   #2
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The relays are under the hood on the fire wall. Maxifuse panel. I will have to check my FSM when I get a chance. Otherwise Toddster may have an answer for this.
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Old 01-10-2009, 04:21 PM   #3
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Originally Posted by guls View Post
I've a 97 SSE with Auto Temp. control. When the system is in Auto, the fan continuously canges speed up-down. Is this a relay? If it is can you please let me know where is teh Relay located so that I can change. When not in Auto Mode, it runs normal.
Thanks
Hey guls,
Sounds like you may have a dirty cabin temp sensor. It'* located in the dash to the left of the cigarette liter plug. Its inside the little vent. To get to it remove the trim bezel(t15 torx bit) that goes around the instrument cluster. It looks like two little wires connecting to a led fishing weight. Be very careful and clean it off by any means. maybe use compressed air BUT use low pressure.

If it'* all covered with dust and stuff it will send irregular readings to the ECC(electric climate control) making the fan go up and down.

otherwise what you are describing is pretty much the norm aside from changing fan speeds allot. I've always thought that the ECC works best in the summer to get the best from your air condition. but thats my opinion.


Guls, welcome to our club by the way! stay for a while.

Last edited by Toddster; 01-10-2009 at 04:23 PM.
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Old 01-10-2009, 05:13 PM   #4
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Thanks Toddster
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Old 01-10-2009, 05:19 PM   #5
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no problem...let us know what you find
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