New Headers and Problems with the O2 Sensors - Check Engine Light
Thread Starter
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Joined: Mar 2009
Posts: 75
Likes: 0
From: Bloomingdale IL
New Headers and Problems with the O2 Sensors - Check Engine Light
Recently I install SLP Headers, Cats and exhaust and this morning the check engine light turns on. Took the car to my mechanic and he told me that the CATS are not enough to perform with the factory O2 sensors. He told me that I can buy "trick" sendors in any speed shop.
I think that the sensors are OK or maybe installed incorrectly.
Please let me know if anyone experience a similar problem and how they fix it?
Thanks in Advance
I think that the sensors are OK or maybe installed incorrectly.
Please let me know if anyone experience a similar problem and how they fix it?
Thanks in Advance
Tech Contributor
Joined: Jan 2007
Posts: 19,475
Likes: 1,171
From: Dyer, IN
Recently I install SLP Headers, Cats and exhaust and this morning the check engine light turns on. Took the car to my mechanic and he told me that the CATS are not enough to perform with the factory O2 sensors. He told me that I can buy "trick" sendors in any speed shop.
I think that the sensors are OK or maybe installed incorrectly.
Please let me know if anyone experience a similar problem and how they fix it?
Thanks in Advance
I think that the sensors are OK or maybe installed incorrectly.
Please let me know if anyone experience a similar problem and how they fix it?
Thanks in Advance
Le Mans Master
Joined: May 2008
Posts: 5,892
Likes: 47
From: Helotes TEXAS
Depending on the year of your car. If it's an 04 like mine, you're out of luck ! O2 sims will only work up to 03. 
Drifting
Joined: Oct 2002
Posts: 1,335
Likes: 76
From: Bedford Va.
O2 simms will help/fix the two rear sensor codes if you can find them.
usually a tuner will delete them from the computer program.
the front o2 sensors need to be heated (use rear sensors in the front position) with a cable connector adapter.
If you list your codes we can tell you exactly which ones are setting the light.
I have found NGK o2 sensors helpful in eliminating these codes.
You should also do a search, there are many post to read on this topic
and as stated it is easy to cross the o2 sensors in the rear position. The computer will not like that.
A tune is usually required to make the most of this change and fix this issue if all else is correct.
usually a tuner will delete them from the computer program.
the front o2 sensors need to be heated (use rear sensors in the front position) with a cable connector adapter.
If you list your codes we can tell you exactly which ones are setting the light.
I have found NGK o2 sensors helpful in eliminating these codes.
You should also do a search, there are many post to read on this topic
and as stated it is easy to cross the o2 sensors in the rear position. The computer will not like that.
A tune is usually required to make the most of this change and fix this issue if all else is correct.
Instructor
Joined: Jul 2005
Posts: 213
Likes: 0
From: Ketchum Idaho
Recently I install SLP Headers, Cats and exhaust and this morning the check engine light turns on. Took the car to my mechanic and he told me that the CATS are not enough to perform with the factory O2 sensors. He told me that I can buy "trick" sendors in any speed shop.
I think that the sensors are OK or maybe installed incorrectly.
Please let me know if anyone experience a similar problem and how they fix it?
Thanks in Advance
I think that the sensors are OK or maybe installed incorrectly.
Please let me know if anyone experience a similar problem and how they fix it?
Thanks in Advance
