How many oxygen sensors are in a 2001 Buick Regal?
Sep 26, 2010 at 7:25 PM
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BLUELIGHTNIN6
✓ASE Certified Mechanic
16,542 POSTS
should have 2 oxygen sensors, one on exhaust manifold and one at rear of catalytic converter
Sep 26, 2010 at 8:01 PM
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