2000 Grand Mercury Marquis

Asked by Jan 05, 2016 at 04:56 PM about the 2000 Mercury Grand Marquis LS

Question type: General

If I get pipes put on my car would I still need O2
sensors

3 Answers

6,675

Yes all four of the sensors are needed by the computer. If you mean that you are having a cat back system put on then there will be no issue since their mounting bungs will still be intact.

2 of 2 people found this helpful.
23,205

well........yeah- get headers with those O2 portals on 'em-

76,505

The O2 sensors make sure your engine is not running to rich or too lean. Your gas mileage will suffer without them.

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