dp213 Posted October 28, 2017 Share Posted October 28, 2017 Quick question. I am hearing a gurgling sound from my heater core sometimes. Is that a sign of it starting to fail? Quote Link to comment Share on other sites More sharing options...
GeneralDisorder Posted October 28, 2017 Share Posted October 28, 2017 Low coolant level. Quote Link to comment Share on other sites More sharing options...
Mike104 Posted October 30, 2017 Share Posted October 30, 2017 Make sure you check the fluid level in the radiator (remove cap when engine is cold) not just the overflow tank. 1 Quote Link to comment Share on other sites More sharing options...
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