CMK4425
NAXJA Forum User
- Location
- Baton Rouge, LA
Why does the 01 XJ have 5 O2 sensors? Do they all have 5? What do you do with the 4 on the exhaust manifold if you put a header on it?
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5 O2 Sensors????
- Thread starter CMK4425
- Start date
JNickel101
NAXJA Forum User
- Location
- Alamogordo, NM
Emissions. You have "pre-cats" - the sensors check your exhaust gasses before and after the cat converters. I've seen them with 4, but not 5 - you must have the California emissions package....started in 2000.
What you do is, you get a "header" from Banks or JBA. They're the only ones who make an exhaust manifold for the 00-01.
What you do is, you get a "header" from Banks or JBA. They're the only ones who make an exhaust manifold for the 00-01.
CMK4425
NAXJA Forum User
- Location
- Baton Rouge, LA
I assume that the header would have the bungs mounted for the stock O2 sensors but what about the precats? Would I be in CEL hell? I'm wondering if it is even worth the pain involved. I should just keep my stock manifold and maybe put a new highflow cat and muffler.:doh:
JNickel101
NAXJA Forum User
- Location
- Alamogordo, NM
yes, those two particular headers have the bungs for the upstream O2 sensors....as for the pre-cats, they sit below the header "flanges" (where the head pipe bolts to the header) and are part of the head pipe/down pipe.
Take a look, you'll see what i mean...
EDIT:
even better, here's a pic, you can see exactly what I mean
http://www.rjroffroad.com/jba-cat4ward-headers-for-00-06-jeep-wrangler-cherokee-40l-offroad-c-577-p-1-pr-17014.html
Take a look, you'll see what i mean...
EDIT:
even better, here's a pic, you can see exactly what I mean
http://www.rjroffroad.com/jba-cat4ward-headers-for-00-06-jeep-wrangler-cherokee-40l-offroad-c-577-p-1-pr-17014.html
magimerlin
NAXJA Forum User
- Location
- Flatonia, Tx
If you think that is bad. The owners of the newer corvettes have 8 O2 sensors.
poorboy_616
NAXJA Forum User
- Location
- Vancouver, WA
McQue
NAXJA Forum User
- Location
- Plainville, Connecticut
only 4 02 sensors on an 01
CMK4425
NAXJA Forum User
- Location
- Baton Rouge, LA
Sorry there is only 4 I was thinking that there was a 5th one:wierd:
92DripCherokee
NAXJA Forum User
- Location
- Tampa, Florida
the 5th O2 sensor is downstream from the main catalytic converter, but its not a worry when swapping exhaust manifolds...
McQue
NAXJA Forum User
- Location
- Plainville, Connecticut
92DripCherokee said:
Just for providing clear information for future readers...
The fuel/iginition emmissions system comes configured with either two or four oxygen sensors, depending on your model year and emmisions package.
There is no configuration that has 5 sensors.
