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02-05-2009, 08:01 PM
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#1
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11 Second Club / I <3 LT1s
Join Date: May 2008
Location: Troy, Mi
Posts: 2,642
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3.8L f-body o2 sensors
how many do they have? My buddy was looking at a car and I ran it on the scanner and came up with both front o2's being bad and a bad o2 on bank 1 sensor 3. It was cold out so I didn't look under the car, but if I had to take a guess...these cars only have one cat? My question is where is sensor 3 on the v6 cars and is it the one that tells u whether or not the car needs a cat?
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Vinnie -
00 SS A4- LQ9/LS3/Stalled/3.42s 1.48/11.10/121 mph<-6spd swap in progress.
13 Silverado Z71- Sold 11/16
99 Z28 M6- -H/C/9in - sold 1/13
99 Silverado Z71- The DD - Sold 7/13
03 CBR 600RR - Sold 8/13
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02-05-2009, 08:38 PM
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#2
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Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,366
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what codes did you have?
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02-05-2009, 09:01 PM
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#3
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NJFBOA Co-Founder
Join Date: Jul 2004
Location: All up in your kool aid!
Posts: 12,235
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OBD2 has three, one in each bank and one after the cat.
It could mean a bad cat or just the sensor is going bad.
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02-05-2009, 09:24 PM
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#4
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11 Second Club / I <3 LT1s
Join Date: May 2008
Location: Troy, Mi
Posts: 2,642
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Quote:
Originally Posted by NJSPEEDER
OBD2 has three, one in each bank and one after the cat.
It could mean a bad cat or just the sensor is going bad.
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well on my z28 it has 4. bank 1 has a sensor 1+2 and so does bank 2. I've never heard of a bank 1 sensor 3 so that's where I'm getting lost.
__________________
Vinnie -
00 SS A4- LQ9/LS3/Stalled/3.42s 1.48/11.10/121 mph<-6spd swap in progress.
13 Silverado Z71- Sold 11/16
99 Z28 M6- -H/C/9in - sold 1/13
99 Silverado Z71- The DD - Sold 7/13
03 CBR 600RR - Sold 8/13
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02-05-2009, 09:28 PM
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#5
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Join Date: Aug 2005
Location: Blackwood, NJ
Posts: 2,295
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My 98 V6 had 3..
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Jeff
2002 WS6 T/A.. M6..Built 383 TMR tune..461rwhp,458rwtq
2009 G8 GT. Bone stock 13.6@103.. Vararam Intake, GXP Axlebacks, LS2 FRC's
1998 Corvette Convertible, Vararam Intake+Power Duct, Fast 90/90, Ti Axleback..12.8@110
2003 Cobra Convertible 10th Anniversary
http://www.fquick.com/slow-v6
Local car cruise schedule..
http://www.cliffscalendar.com/
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02-05-2009, 10:00 PM
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#6
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NJFBOA Co-Founder
Join Date: Jul 2004
Location: All up in your kool aid!
Posts: 12,235
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Quote:
Originally Posted by NJNETSFAN
well on my z28 it has 4. bank 1 has a sensor 1+2 and so does bank 2. I've never heard of a bank 1 sensor 3 so that's where I'm getting lost.
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I just meant the V6. They only have one cat, it after the Y-pipe and one sensor after that.
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02-06-2009, 05:24 AM
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#7
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11 Second Club / I <3 LT1s
Join Date: May 2008
Location: Troy, Mi
Posts: 2,642
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Quote:
Originally Posted by NJSPEEDER
I just meant the V6. They only have one cat, it after the Y-pipe and one sensor after that.
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ok, I had a feeling that's what it was. Thanks.
__________________
Vinnie -
00 SS A4- LQ9/LS3/Stalled/3.42s 1.48/11.10/121 mph<-6spd swap in progress.
13 Silverado Z71- Sold 11/16
99 Z28 M6- -H/C/9in - sold 1/13
99 Silverado Z71- The DD - Sold 7/13
03 CBR 600RR - Sold 8/13
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02-09-2009, 10:25 PM
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#8
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Join Date: Dec 2004
Location: Galloway, NJ
Posts: 3,964
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We have 4. 1 on each manifold, and then one pre and post cat.
__________________
1996 Camaro C/S - 2/3 Corvette Engine
Quote:
Originally Posted by BigAls87Z28
Uh yeah, after they surprized buttsecks us at Pearl Harbor?
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02-11-2009, 06:40 PM
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#9
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Co-Founder / Site Admin
Join Date: Jul 2004
Location: Ewing, NJ
Posts: 22,476
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Quote:
Originally Posted by Blacdout96
We have 4. 1 on each manifold, and then one pre and post cat.
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The later cars didn't have a 3rd one before the cat....just one on each side, then one after the cat (this was on Little G's 2002 3.8 / M5).
- Justin
__________________
1999 Camry - Beigemobile DD
2002 Suburban - Wife's DD
2004 Grand Cherokee - Not running / Project / Selling?
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02-12-2009, 03:01 PM
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#10
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Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,366
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its probably a cali emissions thing to have 4.
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