Author Topic: 69 Heater fan  (Read 1416 times)

muzzy

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69 Heater fan
« on: November 10, 2012, 11:29:20 PM »
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
« Last Edit: November 11, 2012, 12:58:52 AM by muzzy »

x77-69z28

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Re: 69 Heater fan
« Reply #1 on: November 11, 2012, 01:36:51 AM »
Not in 69. Astro ventilation was  just venting outside air
69 x77 burnished brown, 711 int 05A bought in 78
67 rs/ss 350 butternut yellow 4 speed 2nd owner
70 Z28 forrest green, green int, M40, bk vinyl roof PROJECT
99 SS hugger orange 6spd NO TTOPS bought new 1 of 54
11 cts-v blk diamond  edition wagon 556hp sick!

tmodel66

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Re: 69 Heater fan
« Reply #2 on: November 11, 2012, 03:55:51 AM »
When it's turned off it should be completely off.
Daniel  
'69 SS 350/4 speed  Fathom Green--POP

muzzy

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Re: 69 Heater fan
« Reply #3 on: November 11, 2012, 03:59:41 AM »
Thanks guys any idea where to start looking for the fault condition?

JohnZ

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Re: 69 Heater fan
« Reply #4 on: November 12, 2012, 08:26:04 PM »
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.
'69 Z/28
Fathom Green
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Mark

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Re: 69 Heater fan
« Reply #5 on: November 13, 2012, 07:18:25 PM »
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.
Mark C.
1969 Indy Pace Car
350/300HP RPO Z11