Did you look closely at the sender you took out and the one you installed? If I remember correctly there is a difference in the appearence of the part that is in the coolant.. If the one you replaced is not zackly shaped the same... It ain't gonna work. On the flip side if you put a sending unit where the SWITCH goes the damn thing will hardly run... You would know right off if you did that,]Big Jim
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professional bovine relocation specialist