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*stich626* · 03-16-2011, 05:26 PM

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..

03-16-2011, 05:26 PM	#3
stich626 Account Suspended Join Date: Sep 2010 Location: hingham ma Posts: 1,721	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..