Car Backfiring/sputtering After Lt Install
Le Mans Master
Joined: Dec 2003
Posts: 5,561
Likes: 448
From: Atlanta metro Ga.
Le Mans Master
Joined: Dec 2003
Posts: 5,561
Likes: 448
From: Atlanta metro Ga.
Bank 2 is the passenger side, it would be helpful to post the correct code, will tell us if it's front or rear. As previously stated, rear O2's won't cause the issues you are having.
Thread Starter
Racer
Joined: Aug 2006
Posts: 404
Likes: 0
From: Napa Ca
i believe the 02's will because when the codes cleared the car runs like a champ. when the code comes on the motor is running way rich. im changing my plugs, but i dont think thats the problem. i know its my 02's becuase before the swap the car ran perfect.
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
On some C5's, unless the cylinder misfire is severe or happening over a long period of time, it wont set a DTC code. It will however, cause the check engine light to "FLASH" while the event is happening. Some advanced tuning software will tell you the exact cylinder expierencing the problem. If it does set the misfire DTC, it will be a P 0300 code.
BC
BC
Le Mans Master
Joined: Dec 2003
Posts: 5,561
Likes: 448
From: Atlanta metro Ga.
This is the right-hand side (passenger) rear (after cat) O2 sensor.. BUT, that doesn't mean it's "defective", and replacing it will not necessarily solve your issue. This is not to say that you don't have an issue with a front O2, or a spark plug, or plug wires, etc.
Thread Starter
Racer
Joined: Aug 2006
Posts: 404
Likes: 0
From: Napa Ca
im not replacing it.. im going to my tuner saturday to have him delete the 02's in the rear. my plug wires are new and so the only thing im going to replace are my spark plugs. with ngk tr55gp's.
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Thread Starter
Racer
Joined: Aug 2006
Posts: 404
Likes: 0
From: Napa Ca
well i found out my problem... the stock plugs are gapped to far. i installed some ngktr55's at .050 gap and they work perfectly. im having no more misfiring or sputtering at WOT. thanx for the help guys
Le Mans Master
Joined: Dec 2003
Posts: 5,561
Likes: 448
From: Atlanta metro Ga.
For the record, most of us do not re-gap the NGK's; as long as they all look the same (no one dropped them in the box, etc.), they are plug and play.
