05 Pontiac Sunfire overheating - Pontiac Forum - Pontiac Discussion Forums

Sunfire 1995-2005 This sport compact offered sporty lines and an efficient engine, allowing the driver the feel of the a sports car without the huge fuel bill.

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Old 04-19-2017, 02:23 PM
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Default 05 Pontiac Sunfire overheating

I have had mild issues with this for the last year but nothing significant. sometimes if I was sitting still for too long or slow traffic; the engine would get hot and spill some antifreeze. Now it is getting worse and overheating on a 15- minute drive.

My first step will be to change the thermostat and flush the radiator. I would love some input.

I have already replaced the coolant recovery tank and cap.
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