1999 Ford Ranger O2 Sensor. Corrosion-resistant stainless steel construction PTFE filter blocks efficiency-robbing contaminants. Install the new sensor using some anti-seize compound on the threads.
Check the signal from the O2 sensor that connects to the PCM make sure it is seen by back probing the O2 sensor connector and if needed back probe the signal wire at the PCM as well. Typically the oxygen sensor has a chemical reaction which produces a voltage. If the exhaust has too much oxygen the mixture is too lean and if the exhaust has too little oxygen the mixture is too rich.
Ranger Bad O2 Sensor Symptoms Causes.
FORD 1999 RANGER 30L V6 Exhaust Emission Oxygen O2 Sensor. Oxygen O2 Sensor Socket Wrench. JDMON Compatible with Oxygen Sensor O2 Sensor Ford Lincoln Mercury Mazda F150 f250 Mustang Ranger Focus Replaces SG1814ES20104 234-4071234-4046Set of 4 46 out of 5 stars 14 5298 52. Replacing the Upstream Oxygen Sensor in a 1998 1999 2000 Ford Ranger.