Fuel Tank Temperature (FTT) Sensor
WARNING: This page is about a different car, the 2000 Ford Pickup, 2000 Ford Econoline, and 2000 Ford Contour. However, it is still accessible from the selected car via links, so may be relevant.
Faults in FTT sensor or circuit should set a Diagnostic Trouble Code (DTC). See QUICK TEST in SELF-DIAGNOSTICS - EEC-V (BI-FUEL) article. If no DTC has been set, see TEST DD under SYSTEM TESTS (BI-FUEL) in SELF-DIAGNOSTICS - EEC-V (BI-FUEL) article for FTT sensor and circuit testing.