07 pt cruiser overheats, radiator empties into overflow but doesn't return to radiator

Asked by Oct 08, 2017 at 05:07 AM about the 2007 Chrysler PT Cruiser Touring Wagon FWD

Question type: Maintenance & Repair

My 07 pt cruiser radiator empties into overflow but
I have to syphon it back into the radiator.  It
overheats within 50 miles at highway speeds, when
I check the radiator after the over heat it is about
half empty and the overflow is full to the top and
won't drain back into the radiator. The electric fans
work.  The car has a new radiator, new timing belt,
new thermostat,  hoses. Any suggestions as to
whats wrong? Car has 105k on it,  no antifreeze in
the oil visa versa. Runs great just always

1 Answer


Make sure your radiator cap is sealing well and closing tightly. Your radiator needs to be able to draw/suck the fluid back in from the overflow bottle as it is cooling down. It can be sucking air back in through a faulty or poorly secured cap instead of fluid from the overflow bottle.

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