got a thermo fan?
this could help!!
oh and the 82 mark should be halfway ish.
temp guages are funny things mine worked fine until i got a new sender which was meant for the year n stuff
but it read 3/4 hot all the time!
and this was wrong cos i could get out and sit my hand on the rad. so yeah!!
probs nothing wrong.
oh also i had my thermfan set to 60degrees. and the guage was at 3/4 before the thermo kicked in so yeah!!
guages are funny things.
hook up an aftermarket one!!