locations of oxygen sensors on engine

Asked by Nov 21, 2012 at 06:45 PM about the 1993 Oldsmobile Cutlass Ciera 4 Dr S Sedan

Question type: General

oxygen sensors locations

2 Answers

96,205

The V6 has two O2 sensors. The upper one provides feedback to the ECU for fuel trim. It's in the exhaust header between the engine and the cat converter. The second sensor is downstream of the converter and monitors the condition of the converter.

2 out of 2 people think this is helpful.
33,375

This car is pre1996 no downstream. Just one upstream with a single purple wire going to it.

3 out of 3 people think this is helpful.

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