O2 Sensor problems of the 1999 Ford Taurus

The contact owns a 1999 Ford Taurus. The contact stated that the service engine soon light illuminated on the instrument panel. A mechanic replaced the oxygen sensor; however, the light still illuminated. The contact was informed that there was a misfire on the #6 cylinder. In addition, there was a lot of smoke when the vehicle was started. He took the vehicle to a mechanic and they stated that the possible cause of the failure was antifreeze entering the motor. The mechanic also suggested that there was a potential issue with the head gasket, which would cost between $1,500-$2,500 to repair. Also, the vehicle would not decelerate if the contact removed her foot from the accelerator pedal; therefore, he would have to apply the brakes instead. The mechanic informed him that the vehicle would coast due to the cruise control. The contact also experienced issues with the fuel system using more gasoline than he believed was necessary. For errands around town, the vehicle would use a half of a tank. The headlights had a dingy color on the inside. He attempted to get another lens cap for it, but could not change it because it was plastic. The contact would have to purchase another headlight to correct the issue. The manufacturer could not assist because the vehicle was close to ten years old. The contact also noticed that the vehicle would accelerate on its own and slip into another gear. Lastly, there was an issue with the instrument panel gauges dimming intermittently. The current mileage was approximately 118,000 and failure mileage was 117,400.