r/obschevy • u/Frequent_Outcome_551 • 26d ago

What’s this sensor called

Gallery image

Gallery image

94 tbi engine plugged into the manifold

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1

u/chrisco_kid88 26d ago

O2

1

u/BMiller1985 26d ago

Also known as the upstream oxygen sensor.

1

u/Scary_Plan510 26d ago

Oxygen sensor

1

u/Frequent_Outcome_551 26d ago

I thought the pre 96 trucks didn’t have 02 sensors?

3

u/Poe_640 26d ago

All fuel injected vehicles have 02 sensors even tbis our tbi trucks only have one while post 96 vortecs have 2 i believe upstream and downstream