Greg,
You may just have a faulty o-ring @ that sensor.
Pinch off the hoses with a hose pincher, remove the sensor (some collant
will come out) and inspect the o-ring. If thats all it is then great! Take
it and try to match one up at the hardware store or order one form one of
the list vendors, they aren't expensive. Hope that;s all it is.
Later,