2005 PT Cruiser GT Conv.
This is difficult to answer without more data. That being said there are a number of things that would cause this to happen: engine running and running hot, when the thermostat opens, the car may surge a bit to cool it down; the fuel filter may be clogged or the pump may be malfunctioning. It it is the HO Turbo, it could be an issue with that. Run a diagnostic on it. Do any of the lights on the dash light up when this happens?
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