Where are the oxygen sensors located on a 1994 Grand Marquis?

Asked by antok Jun 11, 2016 at 12:50 PM about the 1994 Mercury Grand Marquis LS Sedan RWD

Question type: Maintenance & Repair

According to the literature I've found, My car has two O2 sensors, not 4 as the
later models have. Are they located under the car by the catalytic converter or
somewhere on the exhaust manifold in the engine compartment??

1 Answer
5,425

Trippmeister answered 8 years ago

The ones on my '93 were under the hood, right past the manifolds. So hard to get at, I broke the top of one off, and used a universal socket. They also make special sockets for them, but didn't work on L side.

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