...turn the car off? I think it must be my radiator. I can hear it from the driver's seat. It gurgles for about 30 seconds after I turn it off. It did it 2 times yesterday out of about 4 times I turned the car off and has done it 1 time today out of 2 times I drove. The radiator is new last summer (summer 2011). The car is a 2001 hyundai elantra. I think I have heard it do it before, a long time ago, don't remember if it was this radiator or the old one.