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Just put a new head on my fathers 97 SPI 2.0. Runs great but the temp guage is pegged(way past the red) and the tach doesn't work. I disconnected sending unit and the temp guage drops back a bit (to about 3/4 of the way up on the scale). Checked all the wires for a pinched or grounded wire and all looked ok. Just wondering if anyone else has ever had this problem. It wasn't this way prior to head install. TIA