Yaris is shacking

[adigilani]

Hi All

I have bought a second hand Toyota Yaris Registered in 2000 in Ireland. This is first time i have a toyota VVTI engine and just trying to understand all. I have few question and was hoping if someone can answer.

1) when i start the engine (car is parked unused couple of hours) the hot coolant sign (red) comes on but turn to cold coolant sign (green sign) instantly and stayes for a while and then disappear. It doesn't go back to red or green. Is it normal? If not, should i replace the coolant. If yes then how i can do that.

2) Car is shaking a little bit and when i press the accelerator car misses sometimes and i think i am not getting the full power of the engine. What can be the reason. I had a renault clio and it did the same thing and i discovered the ignition coils are gone. When i bought the car i was told the car is serviced and i checked the oil and it doesn't look like it need replacement. The mileage is only 32000miles. The service light doesn't come also so i guess it doesn't need service.

Can someone please answer the question.

Any help will be appreciated.