bypassing o2 sensor for new cat.
#1
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Year: 1997
Model: Cherokee
Engine: 4.0 HO
bypassing o2 sensor for new cat.
So I'm looking to get a new cat and I want to get the shortest cat I can find and mount my muffler right behind it. So basically I won't have a bung for the o2 sensor. And from my understanding an o2 sensor works by detecting certain gasses. So would I just be able to zip tie the sensor somewhere out of the way? Or will I still get a cel? It seams too simple to work.
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Year: 1995
Model: Grand Cherokee
Engine: 4.0 with all of the noise and clatter
The downstream O2 sensor is there to monitor catalytic converter efficiency. You can buy the bungs from Summit Racing or Jegs, and a muffler shop shouldn't charge more than 20 bucks to weld it in.
#6
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Year: 97
Model: Cherokee
Engine: 4.0
PO deleted the cat and engine light is always on, downstream sensor is plugged in but I want to make the engine light disappear..
what exactly is a bung...??
what exactly is a bung...??
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#8
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Year: 1996
Model: Cherokee
Engine: 4.0 HO Straight Six
Oh... Haha I just assumed. Whoops
#9
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Year: 2001
Model: Cherokee
Engine: 4.0
So I'm looking to get a new cat and I want to get the shortest cat I can find and mount my muffler right behind it. So basically I won't have a bung for the o2 sensor. And from my understanding an o2 sensor works by detecting certain gasses. So would I just be able to zip tie the sensor somewhere out of the way? Or will I still get a cel? It seams too simple to work.
At least not if cat converter is bad. I knew some guy, who had piece of pipe installed instead of cat converter, rear sensor was still there as it should. No engine codes, no light on.
It is easy to check:
disconnect rear o2 sensor and start engine.
If you let sensor hanging, keep in mind that it is heated.
Well, you can install it inside driver seat to get it warm in winter, but 600F is a little warmer than you want.
Last edited by car5car; 08-22-2012 at 01:12 PM.
#13
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Year: 1998
Model: Cherokee
Engine: 4.0
You need the front O2 for fuel changes the computer uses it. The rear o2 can be removed, you just need to look up how to make a o2 Sim. It will tell the computer everything is good.
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Year: 1987
Engine: Check
So the ECU must not care TOO much.