CRG Discussion Forum
Camaro Research Group Discussion => Maintenance => Topic started by: muzzy on November 10, 2012, 11:29:20 PM
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Hi,69 Camaro non A/C heater
Is the heater fan supposed to run in the off position?(key on)
All the speeds work but fan continues to run very slowly in the off position,I have heard that having the fan running all the time has something to do with the astro ventilation
All comments appreciated
Regards Murray
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Not in 69. Astro ventilation was just venting outside air
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When it's turned off it should be completely off.
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Thanks guys any idea where to start looking for the fault condition?
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Thanks guys any idea where to start looking for the fault condition?
Has to be either in the fan switch itself or two wires pinched together between the fan switch and the heater blower resistor.
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Turning the fan to "off" on the left most lever, doesn't always turn the fan completely off. The fan speed siwtch is attached to the back of the heater control panel and operates off a linkage that operates the dampers in front of the heater core. When you slide that lever up to the "AIR" position the fan should stop, but if you inkage is worn, or bent the switch may never switch the fan off an the fan will continue to run in slow speed.
AC equipped cars fans will continue to run even with the fan switch across the top of the heater control in the OFF position. It will not shut completely off until the tmeprature cntro switch is placed in the OFF position as well. These cars have a separate "lo Blo" switch attached to the bottom left rear of the heater control that keeps the fan running in slow until the temp control switch is turned off. If you put the temp control switch in off, the fan won't work in any speed, as power is completely disconnected to the fan switch.