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Author Topic: "sloshing" sound from heater  (Read 4743 times)

Offline vince311

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"sloshing" sound from heater
« on: March 25, 2009, 10:28:03 PM »
I just installed a new motor in my 82 swb 2wd. It also has a new heater core. In my first couple test trips, I noted a "sloshing" sound coming from the heater. I did a quick Google search...and it would appear that low coolant level can cause this sound. Is that right? Anyone else ever have this issue?

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'82 Chevy shortwide, 2wd, 350/350 - Sold

Online VileZambonie

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Re: "sloshing" sound from heater
« Reply #1 on: March 25, 2009, 11:00:07 PM »
Sure, check the level in the radiator. Make sure the heater hoses don't sag excessively.
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Offline Irish_Alley

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Re: "sloshing" sound from heater
« Reply #2 on: March 28, 2009, 01:50:13 AM »
like vile said, also air in the core will cause this problem nothing hard to fix
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Offline vince311

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Re: "sloshing" sound from heater
« Reply #3 on: March 28, 2009, 11:28:23 AM »
Quote from: Irish_Alley on March 28, 2009, 01:50:13 AM
like vile said, also air in the core will cause this problem nothing hard to fix

what is the best way to purge the air? Is this a matter of running the truck (in park) with the radiator cap off?
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Offline enaberif

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Re: "sloshing" sound from heater
« Reply #4 on: March 28, 2009, 11:59:08 AM »
Quote from: vince311 on March 28, 2009, 11:28:23 AM
Quote from: Irish_Alley on March 28, 2009, 01:50:13 AM
like vile said, also air in the core will cause this problem nothing hard to fix

what is the best way to purge the air? Is this a matter of running the truck (in park) with the radiator cap off?

If you can.. lift the front end up a bit.. easier for the air to escape then run the truck with heat on full blast the air should escape and you can top off the fluid too.
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Offline vince311

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Re: "sloshing" sound from heater
« Reply #5 on: April 01, 2009, 02:36:57 PM »
fixed. ran a while with the cap off...made sure the fluid was near full. thanks guys
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