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heater switch making swooshing noise on or off

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heater switch making swooshing noise on or off

Old 11-15-2018, 08:05 PM
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Location: San Antonio Texas
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Car: 1990 firebird
heater switch making swooshing noise on or off

so my AC and heater work .. the blower has just the high setting, which iím working on..however i wanted to see if anyone has seen this or know how to fix it ..
first itís a 92 firebird 305 TBI, all original .. as far as i know .. the previous owner did a really bad electrical hack job to bypass the starter so he had a cool looking button.. so this may or may not have something to do with that ..
so fan at low and switches all the way to the left, cold and off, there is no noise at all.. move the cool/heat lever a small micro bit and you get a loud swishing or blowing noise .. no air coming out of anything .. just a constant noise except when i mash the gas for some reason... from half a smidge from cold all the way to the end of hot it makes the noise..


Last edited by Irishamericanld; 11-15-2018 at 08:10 PM. Reason: add video
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Old 11-18-2018, 07:21 PM
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Re: heater switch making swooshing noise on or off

i ok found out this was a vacuum leak.. in tweaking it but she seems to be working !
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