I am not familiar with this model however I agree with the comments already made, Just to add that it looks like your thermostat is the most likely cause where it is slow to react and causing up and down temperatures.
Could be thermastat is not opening all the way,bad coolant temperature sensor,bad water pump.First check your over flow coolant container,check underneath for leaks.Radiator could be clogged up.
Answers & Comments
I am not familiar with this model however I agree with the comments already made, Just to add that it looks like your thermostat is the most likely cause where it is slow to react and causing up and down temperatures.
Could be thermastat is not opening all the way,bad coolant temperature sensor,bad water pump.First check your over flow coolant container,check underneath for leaks.Radiator could be clogged up.