1995 Chevy Blazer o2 sensors

1995 CHEVROLET BLAZER
200,000 MILES • 6 CYL • 4WD • AUTOMATIC
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BUCKEYEFANJD76
  • MEMBER
  • 1 POST
i need to know how many o2 sensors there are on a 95 chevy blazer i changed 2 but the check eng. light says a bad o2 sensor
Feb 8, 2010 at 1:50 PM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
there are 4. 2 pre and 2 post. in other words 2 before teh converter and 2 after. or if you have one converter 1 before an d1 after. they are both different. Your scan tool should tell you which one is giving you the problem.
Feb 9, 2010 at 10:28 AM
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