I have an OBD3 with torque pro and was monitoring coolant temps on my way home last night. it seemed to vary between 87 and 95 degrees. Low speed around 30-40 mph and the coolant was up about 93. when stopped it went up to 95 quite quickly before the fans kicked in and dropped to mid 80's. Bit faster driving and it was about 90 degrees.

It seems to be fluctuating a bit more than normal, although it could be that I didn't notice it! Every time i checked it before it seemed to be sitting at 90 or 91 degrees without fluctuating.

Now I am watching it far too much. Is this normal operation? I realise that it probably did this before but now I have spotted it I am looking for problems that are maybe not there! Anyone care to comment, thermostat starting to fail or maybe coolant issues?

 

Sounds normal

 

^^^ this

 

Thanks, thought it might have all been in my head, just looking a second opinion!