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#1 |
Registered User
Join Date: Oct 2010
Location: Kansas City
Posts: 3,590
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Gurgling sound from heater core
When I first bought my truck I had the cooling system flushed and filled with new coolant. Now, as I'm driving -- with the motor warmed up -- I sometimes hear a gurgling sound coming from under the dash in the area of the heater core. I did some searching and saw some others had the same issue. But in each case, they were reporting no heat.
I have good heat, no leaks. Just this annoying sound coming from under the dash. Any ideas? Thanks in advance!
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Willie Swamp Angel Truckers '72 C10 Highlander ![]() People who blindly follow a GPS end up on television programs on The Weather Channel. Some survive, some don't. ![]() |
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#2 |
Active Member
![]() Join Date: Jul 2007
Location: Centrally located between Houston, Austin and Waco. BCS area.
Posts: 7,947
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Re: Gurgling sound from heater core
bump:
Any gurgling sound you hear is caused by air in the fluid -but you knew that already. The problem is how to get it out of there. I don't have an answer for you but maybe somebody else that has had the problem can tell you what they did. forgot to add: make absolutely sure it's a gurgling sound and not a sound made by a worn or lose fan motor which could mimic that. Last edited by 68gmsee; 03-16-2011 at 04:42 PM. |
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#3 | |
Registered User
Join Date: Oct 2010
Location: Kansas City
Posts: 3,590
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Re: Gurgling sound from heater core
Quote:
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Willie Swamp Angel Truckers '72 C10 Highlander ![]() People who blindly follow a GPS end up on television programs on The Weather Channel. Some survive, some don't. ![]() |
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#4 |
Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: Gurgling sound from heater core
try switching the locations around where the hoses hook to the heater core that will reverse the flow of what you have now and could make a didderence?????
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71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY |
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#5 |
Account Suspended
Join Date: Sep 2010
Location: hingham ma
Posts: 1,721
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Re: Gurgling sound from heater core
it might be the shut of valve, if your truck has a/c
as the coolant gets sucked out of the core faster than the mostly closed inlet will flow.. check the valve if you have a/c.. and back flush the core.. |
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#6 |
Registered User
Join Date: Jun 2010
Location: Upland Ca
Posts: 4,143
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Re: Gurgling sound from heater core
Don't worry about it. Just keep an eye on the radiator level.
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1972 C10 SWB, Air, PS, PB, 350/350THM. Second owner. 1965 Corvette roadster, 44K miles, 327/365 SHP, 4 speed, side exhaust, knockoffs, teak, second owner (bought in 1970), Have ALL numbers matching components. My frame off restoration thread: http://67-72chevytrucks.com/vboard/s...d.php?t=556703 |
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#7 |
Scrapper 1
Join Date: Jan 2007
Location: Riverside Calif
Posts: 1,649
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Re: Gurgling sound from heater core
well things to do when you buy one of these trucks one is put all new motor mounts in change the radiator all the belts and hoses transmission gasket and filter U joints check rear fluid Brakes and I like the heater box pulled open and replace it.
I love heater cores I own a 1965 3/4 ton and man with out that dang thing i would of had a blown head gasket long ago.See i live in Calif near the desert.and I've been hauling scrap for the better part of 20 years i have over 700,000 miles on the poor engine that has the factory 2 speed power glide with a 410 gear. My grand father always told me you see the truck getting hot turn on the heater.He said to turn it on even if its 103 out side. If you don't you be walking and frying but i rather fry in the truck and get home |
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