Heat soak (archive)

The heat soak issue came in mind.I have tried this by shutting off the engine after a long drive and putting the key to ON again to power the instrument cluster.(My normal driving temp is a needle width below mid mark).I noticed the temp increasing to a needle width above the mid mark and that's as far as it goes after 10 mins,no more.So in your case for the needle reaching the red mark is a little bit too HOT to handle in my opinion.This may be a defect and it may not,as your normal driving temp is steady below mid mark.
Maybe it's an over sensitive temp sensor???

moots '90 520i

after about 15 minutes of hard city driving and i park the car for about 10 minutes and i come back the coolant thermometer is all the way in the red zone. should it be this high? outside temp is about 89 degrees and it will happen even if i dont have the heater on. the check coolant temp message goes on and am i still allowed to drive it. becuase i turn the heater all the way up and it starts going back to the middle and gets there in about a minute. am i damaging the car by driving it i keep it under 2000 rpm until it does cool down and while im moving it dosent go past the middle once it cools off. i know it should be getting hotter since the engine and fan was off before but should it get all the way to red? maybe i need a new thermostat. thanks for your advice guys

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