What is it?
 

On a '91 5.0, what is the sensor directly behind the temperature gage sending unit on the right front side of the engine. It has two wires and is exactly the same size as the temperature sensor to the computer set on top of the thermastat housing.

First off the temperature gage sending unit is on the left side behind the distributor with one push on wire.

Can you tell us the color of the wire and the color of the stripe on the wire if it has one?

This is a 5.8 intake but the sensors are in roughly the same location on the 5.0.

http://farm4.static.flickr.com/3449/...6c41ac16_o.jpg