need o2 sensor help
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need o2 sensor help
i have 02 with long tube headers my front 02 sensor stopped working or only worls when it wants to i assume its connected to my air fuel meter cause sometimes it works sometimes not.napa tells me I need a 02 sensor for headers is this true?if so where do I find one or is parts guy wrong
Tech Contributor
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From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
i have 02 with long tube headers my front 02 sensor stopped working or only worls when it wants to i assume its connected to my air fuel meter cause sometimes it works sometimes not.napa tells me I need a 02 sensor for headers is this true?if so where do I find one or is parts guy wrong
The standard C5 O2 sensor will NOT support a wide band gage.
SO, Is your wide band meter intermittent? Or,,,,, are you getting DTCs for the OEM style O2 sensor issue??
BC
Le Mans Master
Joined: Sep 2014
Posts: 5,278
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From: Kelowna BC
Not entirely sure what you're saying either, but if you have headers with one bung per side, the factory O2 sensors should be good.
Edit; how do you know it doesn't work, codes?
Edit; how do you know it doesn't work, codes?
Last edited by grantv; Feb 6, 2016 at 10:04 PM.
Melting Slicks
Joined: Jan 2014
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From: Central Florida
My afr was intermittent and just today I had it up on a lift and found my mechanic ran the wire from it behind the tunnel heat shield and it was melted to the shield so I had to reinsulate it and wrap it in some heat resistant tape. You may have a similar issue. This is a wideband sensor located where one of my back o2 sensors were.
Le Mans Master
Joined: Aug 2005
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From: CA.
St. Jude Donor '13-'14-'15
LT headers open up a whole new can of worms---That's why they are illegal in most states
Reason being is that with LT's the front 02 bungs can be moved further aft as much as 3 ft---This re-location causes the 02's to not read correctly at P/T and not heat up properly--There is NO 100% fix for this issue---However you can make it much better by installing rear 02's onto the front locations (as the rear 02's are far more sensitive)
2ndly a tuner can LOWER the 02 switching points somewhat to compensate for the further back locations------making them oscillate at a much lower millivolts level---(the lower the millivolts average the LEANER the P/T AFR )
Reason being is that with LT's the front 02 bungs can be moved further aft as much as 3 ft---This re-location causes the 02's to not read correctly at P/T and not heat up properly--There is NO 100% fix for this issue---However you can make it much better by installing rear 02's onto the front locations (as the rear 02's are far more sensitive)
2ndly a tuner can LOWER the 02 switching points somewhat to compensate for the further back locations------making them oscillate at a much lower millivolts level---(the lower the millivolts average the LEANER the P/T AFR )
