Sunday, October 14th, 2007 AT 12:00 AM
My car has a gurgaling sound in the heater core when you increase the rpm and slow down. But when it is running at a idle it does not over heat, but when you drive it at high speeds on the highway it will over heat. I have done the LH head gasket and I have also done the heater core and back flushed the system, and it still over heats at high speeds on the highway. Thank you for your help
