Thread: Percolating Pontiac w/ Video of sound

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  1. #1 Re: Percolating Pontiac 
    GT Level Member sportred04's Avatar
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    well im pretty sure its just coolant flowing through you hearer core. probably got some air in it when you changed your radiator since thatll drain it of coolant. last car i had that had air in the heater core i just pulld the car up the steepest hill i could find and let it idle for a few minutes to let the air "rise" out of the system.
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  2. #2 Re: Percolating Pontiac 
    SE Level Member CSteen85's Avatar
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    I think I'll try that. I don't even know where to go to find a hill!

    How long should I sit and idle for? Should I do anything else? Rev the engine? I'm gonna take a video of the sound later today and post it to update this thread.

    Thanks!


    1997 Grand Prix SE, 3.8L V6 SFI, 140k, purchased on 3/6/10.
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