it might be the low coolant level when heater turns on, turn off

来源: fixanycars 于 2009-01-29 17:49:12 [] [旧帖] [给我悄悄话] 阅读数 : (133 bytes)

low coolant level when heater turns on and engine is cold. turn off the heater when cold engine running to see if the noise changes.

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