This car run, s good when it is cool but after.

How long since a tune-up? Any applicable trouble codes? Id want to check the 02 sensors and coolant temp sensor.

Just to add, what is litre size of engine? You may be able to check mil codes, yourself. You turn key just till the dash lites come on, no further. Cycle the ket, on--off, on---off, on, then the mil on the dash starts flashing, you count the flashes to get the codes. Your looking for two digit codes. Let us know what you find.