I have a 2003 Chevy impala, on my way home the other day I noticed my car was overheating and that the heater was blowing cold air, I pulled over to let it cool off and turned it back on and continued driving, at this point my tempature gauge was all over the place , spiking all the way to hot and then shooting to halfway or below, rinse repeat. When I got home I turned the car off and noticed a glugging sound for 5 seconds or so and it stopped. I changed the thermostat and it didn’t help, I brought it to a shop and they bled the lines for me and said they had success. On my way home the tempature was stable right in the middle, had heat, life was good. Then it happened again. Anyone have any ideas? Faulty thermostat? Water pump? Need to be bled more? I’m having an anxiety attack thinking it’s a blown head gasket but it has none of the traditional symptoms that go with it other than over heating. Any ideas? Thanks
RepairPal Certified shops can diagnose and repair your 2003 Chevrolet Impala. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
Make sure the radiator isn't really dirty or plugged up with debris. If this is happening on the highway or while driving it could be that or the plastic air dam under the car is broken. That funnels air to the radiator. If it happens more when idling or city driving verify the engine fans are working.Use this link to find a good shop near you.
https://repairpal.com/repair-shops
Alex
