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

102,315

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 of 2 people found this helpful.
35,555

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

3 of 3 people found this helpful.

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