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08-05-2011, 11:33 PM
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#1 |
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Registered User
Join Date: Mar 2011
Location: Denver Colorado
Posts: 32
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heater fan
so my heater gave out last winter...... actually it seems like it's just that the fan doesn't turn on. The faster I drive the warmer it gets :-). Hot air is coming out of the vents, just not blowing out at all. last winter the fan worked but was touchy. I'd have to slide the control to high a few times before it would kick in. now it doesn't kick in at all.
I traced the cable from the control unit and it seems to be connected fine. Do you all know what I need to replace or how to get into it? |
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08-06-2011, 02:30 PM
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#2 |
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People know me
Join Date: Jun 2007
Location: Hermiston, oregon
Posts: 840
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Re: heater fan
sounds like the electrical switch on the backside of the heater control is bad. You can check the fan motor itself by taking a piece of wire from the positive terminal of the battery to the male pin sticking out of the fan motor by the passsenger side hood hinge.
If it comes on you have a bad switch.
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1972 k/5 blazer CST 4X4 Crate 350, th350/205, dana44with trac-loc/14 bolt with detroit locker, 4 wheel discs 4.56s, 8" suspension lift using 73-87springs, 1" zerorate custom front crossmember, HAD CV drivelines and driveshaft e-brake, full cage, PRP seats, Full autometer gauges, 38x14.5x16 Toyo M/Ts, 16x10 Polished aluminum rockcrusher wheels 1967 longbox 4x4, Strong 400/400/208, 44/12bolt 4.10s, 6" lift, 35" Toyo M/Ts on corvette rally wheels |
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08-15-2011, 12:39 AM
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#3 |
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Registered User
Join Date: Mar 2011
Location: Denver Colorado
Posts: 32
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Re: heater fan
Yup I ran a cable from the positive post to the blower and it fired right up. When I looked under the Control unit, I saw that the connector or switch at the right side of the control unit looks fried. I can wiggle it and get the blower motor to engage. Where the heck do I get just that piece? Do I have to replace the entire console?
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08-15-2011, 12:08 PM
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#4 |
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SKINNY TIRES RULE!
Join Date: Sep 2001
Location: Bothell, WA
Posts: 11,038
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Re: heater fan
You should be able to get a new switch from just about any board vendor.
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bouncytruck 1972 K5 The Hauler 1994 K1500 Suburban The Daily2010 Kia Soul Wife's Ride2014 Fiat 500L |
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08-16-2011, 12:45 AM
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#5 |
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Registered User
Join Date: Apr 2010
Location: AK
Posts: 198
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Re: heater fan
The fan switch blows out pretty often. I replaced mine not that long ago. LMC has them and being in Alaska the shipping was more than the part!
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