Exhaust problems

Asked by Feb 20, 2019 at 04:04 AM about the 1995 GMC Sierra C/K 1500

Question type: Maintenance & Repair

Do i need o2 sensor

1 Answer

12,435

Only if you want the engine to run properly. The O2 sensor allows the fuel mixture to lean out saving gas and reducing emissions. Without it, it could ruin the catalytic converyer by running too rich.

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