Thread: Sound of rushing Liquid - Behind the Dash?

Possible air in the heater core?

hows your heat now that you hear it again? sucks?

if so, its air in the heater core. when the cars hot, touch both heater hoses off the alt bracket to the fire wall, both should be hot. if one is warm or both cold your core is air bound.

to fix this you take both hoses off the alt bracket, then put a garden hose to one hose then flush it till clear water comes out, you can flush the other hose too. leave as much water in the hoses as you can while putting them back on the alt bracket. your heat should kick ass again, and the sound gone.


dont know where you live, but if its cold you may want to drain some coolant and add some new to perk up the antifreeze. i used a plastic tube to siphon mine out a while back. nice and clean right into a old jug.