Oxygen sensor on 2002 2500 HD

jhughes6060 · 10-15-2007, 06:46 AM

How does the O2 sensor effect the motor and is there anyway to bypass it. I was told that "modifying the Converter" would help performance and mileage on a 6.0. I have noticed that the exhaust has an O2 sensor on the backside of the converter.

03chevy · 10-15-2007, 06:49 AM

it tells the comp. how lean or rich to make the motor run. i think your truck should have 3 or 4 o2 sencors

stelmadl · 10-15-2007, 09:57 AM

I believe the first one tells the computer how the engine is running. The second (after the converter) tells you if the converter is doing it's job. I know you can eliminate the converter, but then you'll have to replace your (second) O2 sensor(s) with an O2 simulator so you don't get the warning/ check engine light. I don't think "modifying" or eliminating the converter is going to get you any significant gains. I'd leave it.

10-15-2007, 06:46 AM	#1
jhughes6060 Junior Member Join Date: Oct 2007 Posts: 1	Oxygen sensor on 2002 2500 HD How does the O2 sensor effect the motor and is there anyway to bypass it. I was told that "modifying the Converter" would help performance and mileage on a 6.0. I have noticed that the exhaust has an O2 sensor on the backside of the converter.

10-15-2007, 06:49 AM	#2
03chevy Senior Member Join Date: Dec 2006 Location: jax,fl Posts: 1,186	it tells the comp. how lean or rich to make the motor run. i think your truck should have 3 or 4 o2 sencors __________________ A dirty mind is a terrible thing to waste!

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10-15-2007, 09:57 AM	#3
stelmadl Senior Member Join Date: Nov 2005 Location: Grand Rapids, MI Posts: 115	I believe the first one tells the computer how the engine is running. The second (after the converter) tells you if the converter is doing it's job. I know you can eliminate the converter, but then you'll have to replace your (second) O2 sensor(s) with an O2 simulator so you don't get the warning/ check engine light. I don't think "modifying" or eliminating the converter is going to get you any significant gains. I'd leave it.