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Why is it so hot? - AC wiring question
The wiring on my AC fan switch gets awfully hot on high speed, after an hour, too hot to hold it in your hand. When I drop the fan speed back on notch, it is fine. The switch is new (less than a year), what could be my problem. Is it the fan motor up front or the relay down where the air is sucked from the passenger footwell?
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DonMo 1984 911 Carrera Targa 3.2 liter, SSI's, Dansk 2 to 1, Steve Wong Chip Columbia, SC "Go Hokies" |
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10-02-2005, 01:02 AM
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Still Doin Time
Join Date: Nov 2004
Location: Nokesville, Va.
Posts: 8,225
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Sounds like the fan motor is failing and /or you have high resistance in the circuit (wiring/relay).
I would take this issue seriously and look into it. My first guess would the fan motor drawing too many amps
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'15 Dodge - 'Dango R/T Hauls groceries and Kinda Hauls *ss '07 Jeep SRT-8 - Hauls groceries and Hauls *ss Sold '85 Guards Red Targa - Almost finished after 17 years '95 Road King w/117ci - No time to ride, see above '77 Sportster Pro-Street Drag Bike w/93ci - Sold |
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10-02-2005, 07:29 AM
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Thanks, my guess is the relay or resistor for the high speed. It doesn't get hot on low or middle speed.
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DonMo 1984 911 Carrera Targa 3.2 liter, SSI's, Dansk 2 to 1, Steve Wong Chip Columbia, SC "Go Hokies" |
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10-02-2005, 06:20 PM
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If you have it on high speed generally the rsistor pack is no longer being used to control the fan, the fan get it current direct from the relay.
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10-02-2005, 07:03 PM
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1984 Porsche Targa 3.2
