Location of the O2 sensors

1994 CHEVROLET ASTRO
238,000 MILES • 6 CYL • AWD • AUTOMATIC
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AUDIEFAITH
  • MEMBER
  • 1 POST
Running rich, horrible mpg, lack of engine power, fouling out plugs on the right side, black smoke bad exhaust smell. where are the 2 O2 sensors located and how to test them and/or replace them?
Oct 7, 2010 at 10:17 PM
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JDL
  • ✓ASE Certified Mechanic
  • 16,098 POSTS
  • ASE Certified Mechanic
Sure, here is a guide to help you test the oxygen sensors and the location of the sensor in the images below


https://www.2carpros.com/articles/how-to-test-an-oxygen-sensor-02-sensor


Check out the images (Below). Please let us know how it goes
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Oct 8, 2010 at 4:30 PM
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