Fluctuating temp gauge

[Sam_K]

Hi all

I have tried to search but cant seem to find the answer

I have recently carried out d coolant change, and replaced the thermostat and cts.The reason I did this was because the temp needle wasnt sitting bang in the middle.

I had no problems driving it to le mans recently after I changed all the items however the last couple of days the temp needle has been going up and down like a whores knickers.

I dont really know what this could be as it was fine on the circa 1000mile trip. Only thing I can think of is air in the system?/

Does anyone have any ideas

Thanks

 

[Paul182]

id say either air in the system or the wiring from the CTS?

 

[MartinR]

Air in the system or sensor/wire fault. could be down to a few things tbh. i would get some diagnostics run to pinpoint the problem