99 accent
 

does any one know which sensor i should change, our rad fan works fine in
warmer temps, but in severe cold it comes on from cold start at -29 f or
more

i know the ecm controlls it, but which sensor gives the info to the ecm
,coolant temp sender or coolant temp sensor?
and which one goes to the temp gauge on the dash? kiitos =)

99 accent 5 spd