I believe its in the pass side mirror behind the black piece if plastic on the bottom of the mirror
 
engine temp sensor is right hand side of block . you got your car sorted dude
 
is it a common fault if the temp gauge stops working its the coolant temp sensor, as mine is not working
also i have reason to belive the one on the right side of the block doesnt control the gauge ?
is there another sensor which does?
 
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