locate and replace o2 sensors
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1992 Dodge Ram Van B350 Question: o2 sensors code, how to test and replace
Answer #1emcautocenter from EMC Auto Center Complete Auto Care, December 28, 2010, 15:45Enthusiast
The oxygen sensor is threaded into the left exhaust manifold above the manifold outlet. The connector mounts to clip on the left motor mount bracket.. In order to test the sensor you usually need a scanner or digital oscilliscope. Are you getting a check engine light, or just reduced gas mileage?