Hey guys

Looking for a bit of advice

I've had my Insignia about 5 months now and i've noticed that the cooling fan seems to be coming on a lot more frequent than before.

I mainly notice it if i'm stopped in traffic, but the temperature gauge is always sitting at 90 and not climbing? Has anyone else noticed this? I never had this with a 1.9 CDTi Signum an wondered if this was a 'feature' of the Insignia?

The sound seems to be like the fan kicking in but when i rev the engine at standstill the sound disappears. I've also notice that when i stop the car and get out too lock it the fan can be running even on when the engine isn't above the 90 mark on the gauge