1994 Chevy Astro Location of the O2 sensors

Tiny
AUDIEFAITH
  • MEMBER
  • 1994 CHEVROLET ASTRO
  • 6 CYL
  • AWD
  • AUTOMATIC
  • 238,000 MILES
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
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Thursday, October 7th, 2010 AT 10:17 PM

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Tiny
JDL
  • EXPERT
Have you checked for applicable mil codes? Use a gage and check fuel pressure. Not only check for correct pressure, the gage may also show if there is a leak? Some of the national brand autostores used to loan out a fuel pressure gage.

The 02 sensor should be in the exhaust, I'll look for a picture. My info shows front passenger side in the exhaust pipe, you may have to get under the vehicle?
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Friday, October 8th, 2010 AT 4:30 PM

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