first off, I don't know jack about a nissan so try to go easy on me. my sons 97 4 cylinder truck is getting about 12 mpg. it seems to smell like gas, possible flooding. the truck may have had a different engine put in it. the computer reads the crankshaft sensor is bad. the wire that runs to the sensor has been cut, so no plug for the sensor. where can I get one? it also had some readings for emissions, not sure about those. looking around the engine compartment today and found 2 more wires cut. they are coming from the passenger side of the throttle body, black plastic housing, possibly the choke? got any links to some pics of a 4 cylinder that might show the parts I am trying to describe? I will be picking up a fsm this weekend.