When the compensation board fails you can get an erratic or too high or low temperature gauge reading. Easily replaced by removing the instrument cluster, removing the screws from the cluster and pulling out the old board replacing it with this one. Volvo wants $89.70.  Rules To My Auctions: I must receive payment within 3 days of the close of this auction, I also have the right to remove you from my auctions if you have excessive negative feedbacks. Free Shipping.   Thanks for looking and good luck!