I've got a 94 F150, 4.9L, with just over 140k. Anybody know where the temperature sending unit is? MY dash temperature gauge hasnt worked in a long time now - tried changing the thermostat - no help - bought a temperature sending unit to see if that would fix it, but can not find the thing on the engine - it is supposed to be somewhere around the manifold. I've looked all over - any help would be appreciated.