Overheating woes

[Grantus]

Yes, that's a valid question.  The fan was on when I was driving on the motorway and the needle was high, and when I turned the heat on I thought I was going to burn my feet, so I think the gauge is telling the truth but I do want to do more checks because the fan wasn't nailed to the higher speed, it was cycling between lower and higher speeds.

I need to do some testing.  I can stick a thermometer probe between the fins on the radiator and see what temperature it actually is before buying any new parts.

I had an alarming temp needle indication a few years ago, warning of “imminent engine implode”……. But nothing overly hot is the engine bay.

Simple Temp sensor replacement, and all good on the needle since………. Just worth checking.

If there’s heat from the heater, your thermostat is open and working, so a full coolant flush and clean, maybe your next step, to see what come’s out