Question about 1992 Buick LeSabre
The O2 sensors are located on the exhaust system piping. Either on the manifolds or on the pipes themselves. You will need the vehicle cool, then disconnect the electrical connectors. Do them one at a time. You will need either a special O2 sensor socket or a 17 - 22 mm wrench to remove them. Unscrew them from the pipe and rescrew the new one back in. Then reattach the connectors. Then you can start the car.
Posted on Sep 26, 2009
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Posted on Jan 02, 2017
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Fig. HO2S1 location "2" on 3.8L
Fig. HO2S2 location "4" on 3.8L
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