Question about 1997 Pontiac Grand Am
I don't have pictures, but if you look under the car, find the exhaust system, and specifically the catalytic converters (they should be under the center of the car, most likely about in line with the rear seat). Since your car is a 97, it's got OBD2 emissions compliance, which means you'll have an O2 sensor in front of each cat as well as behind each one. They'll be small cylinders sticking up and out of the pipes about 2 inches, with wires coming off the ends. The forward ones are between the front edge of the cat and the engine, and the rear ones will be just past the cats. They're the only electrical sensors that should be on your exhaust system, so you should be able to pick them out easily enough once you're under there.
Posted on Jul 30, 2008
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Posted on Jan 02, 2017
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