where is the o2 senser on a 4.3 engine

Asked by Mar 02, 2007 at 12:36 PM about the 1991 Chevrolet Blazer

Question type: Maintenance & Repair

1 Answer

14,630

Hello snag-- The Oxygen Sensor on your 1991 Chevrolet Blazer is underneath the truck on the passenger side, below the front seat area. You will notice a "Y" shaped exhaust pipe. The Oxygen sensor is located inside of that. Good luck from Bovan.

Your Answer

Add photo

Related Questions

  • o2 sensors 1 answer

    How many o2 sensors do my 03 blazer have and where are they located?

    2003 Chevrolet Blazer

    -

    Maintenance & Repair

  • 95 s10 blazer 4.3 vortec vin w rough idle 1 answer

    I'm still working on my 95 s10 blazer 4.3 vortec vin 4 it is idling rough & fouling plugs with black Sutt but is will rib up acts like the mass air flow sensor but don't have one I changed the o2...

    1995 Chevrolet Blazer 4 Door LS

    -

    Maintenance & Repair

  • Sputtering Backfire - Chevy S10 With A Blazer 4.3 V6 Engine 8 answers

    Hi guys, I have a 1994 Chevy S10 that has a 2002 Blazer 4.3 V6 vortex Engine in it. This morning on the way to work as I was going up an on-ramp (uphill) to get on the highway, the truck began to sp...

    2002 Chevrolet Blazer 2 Door LS

    -

    Maintenance & Repair

  • I have a 2000 Chevy Blazer that needs a new engine 3 answers

    I am wondering if I can swap the engine with a 2003 GMC Sonoma engine. Both vehicles have a 4.3 Vortec engine

    2000 Chevrolet Blazer 4 Door Trailblazer 4WD

    -

    Maintenance & Repair

  • location of o2 senser on 2007 avalanche 5.3 1 answer

    2007 Chevrolet Avalanche LS 4WD

    -

    Maintenance & Repair

Search Chevrolet Blazer Questions

Chevrolet Blazer Experts

#1 Andrew Olsen
Andrew Olsen
Reputation 1,970
#2 yetilikesbeer
yetilikesbeer
Reputation 1,280
#3 Rowefast
Rowefast
Reputation 1,010
View All

Related Models For Sale

Used Chevrolet S-10
9 Great Deals out of 1,338 listings starting at $1,395
Used GMC Jimmy
261 listings starting at $2,495
Used Ford Bronco
194 listings
Used Ford Explorer
954 Great Deals out of 72,528 listings starting at $1,499
Used Ford F-150
2,183 Great Deals out of 206,246 listings starting at $1,499
Used Chevrolet Camaro
214 Great Deals out of 30,774 listings starting at $1,217
Used Jeep Wrangler
275 Great Deals out of 18,087 listings starting at $2,950
Used Chevrolet C/K 1500
894 listings starting at $2,500
Used Chevrolet Suburban
320 Great Deals out of 19,592 listings starting at $1,350

Used Cars For Sale

2005 Chevrolet Blazer For Sale
15 listings starting at $2,999
2003 Chevrolet Blazer For Sale
104 listings starting at $1,999
2002 Chevrolet Blazer For Sale
152 listings starting at $500
2001 Chevrolet Blazer For Sale
160 listings starting at $1,995

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.