why does coolant run into overfill bottle but not but to radiator after cooled

Asked by Apr 05, 2017 at 02:14 AM about the 2006 Chrysler PT Cruiser Limited

Question type: Maintenance & Repair

when driven long ^ short runs the coolant runs into overfill bottle where it stays
an doesnt return to radaitor when it as cooled off. Relays relpaced, radaitor
power flushed, thermostat replaced an on occassion i here the glugging into the
overfill bottle-what more can i do.....

3 Answers


Replace the radiator cap, and make sure there is a good connection with the hose that runs from the radiator to the overflow.


Its because the cooling system is not building up pressure when it gets hot, either because of the radiator cap, or there is a leak in the cooling system.


Maybe the wrong type radiator cap was installed. Not all caps allow coolant to flow back into the engine.

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