LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

EGR Fault, Bank 2 Oxygen sensor lean exhaust! Please help

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Old Sep 19, 2003 | 05:06 PM
  #1  
WhiteBeast's Avatar
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From: Colorado
EGR Fault, Bank 2 Oxygen sensor lean exhaust! Please help

Ok, I just bought this car and i hooked it up to my diagnostic tester. It reveiled codes 29, 32, and 64. Well 29 was easy to fix, just a blown fuse. But where is the EGR valve?

Will the EGR valve cause my oxygen sensor to pick up a lean reading on bank 2?

I didnt notice a service engine light on my way home, but the engine was making a really weird vacuum noise. It sounds like there is a huge leak on the left side of the engine. Any ideas?

Also could someone post some pictures of their engine on the drivers side so i could compare?

Thanks

Justin
Old Sep 19, 2003 | 06:56 PM
  #2  
joeSS97's Avatar
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From: Detroit area
Do a search for Shoebox.He has a great tech page.About your EGR...possible.Take it out and clean it.You may have a vacuum leak there too.I bet he chimes in next.
Old Feb 3, 2004 | 10:35 AM
  #3  
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From: South Bay Area, CA U.S.A
Man, I'm trying to find out where the heck one of my oxygen sensors is!! Where is left bank, sensor 2, post-converter ? I threw up a P0141. Left bank is driver side so I changed the driver side 02. So, I put in the new 02...SES still on. I drove it around and I should of hit atleast 600 degrees for the pcm to read the 02. Since the light is still on...im thinking I changed the wrong one. So is it the 02 sensor that's on the driver side header or is it the 02 sensor that's in the middle (3rd 02 sensor)? I know it cant be the very rear sensor..? Alos, do I have to erase the code out or do I disconnect my battery and the pcm will reset? I tried twice but was disconnected for 15 minutes... lemme know wassup....

Thanks....
Old Feb 3, 2004 | 12:05 PM
  #4  
AsianSensation's Avatar
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From: Indianola, MS
96-97 bank 1 sensor 2 O2 sensor can be found right here.
http://www.97ta.com/flp/FLP038.jpg
Old Feb 3, 2004 | 12:18 PM
  #5  
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From: South Bay Area, CA U.S.A
oh ok, i was thinking it was that one......I have a new 02 sensor on the workbench so I'll slap it in tonight....Thanks!
Old Feb 3, 2004 | 12:53 PM
  #6  
Injuneer's Avatar
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From: Hell was full so they sent me to NJ
WhiteBeast:

Since you have a scanner, check the passenger side (Bank 2) O2 sensor from cold start thru a WOT pass. Look for unusually low readings. Or, look for excessively high long term fuel corrections (BLM's) on the passenger side. Theres a good chance one or more of the BLM's is max'd out at 160.

And, to check for a faulty sensor, after you have observed the behaviour of both the left and right side sensors, swap the sensors side-to-side, and see if the problem follows the sensor (faulty sensor) or stays on the passenger side (something affecting the passenger side A/F ratio or the wiring).
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