Quote:
Originally Posted by M_McFly
The P0133 code is upstream sensor 1 slow response. Replacing the downstream sensor probably wont get ride of that code. Changing sensors won't hurt but the code coming back after you've replaced the sensor indicates something else wrong in the first place. I'd tighten the 4 exhaust flange bolts just above the sensors, clean throttle body and replace spark plugs and air filter if not done already. Run some fuel system clean and see how it goes.
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The exhaust flange...is that where it connects to the manifold??
Or TJ does have aftermarket extractors/manifold too. It has a very nice tone...
So I reset the computer after installing the upstream sensor with one from 4x4 point. The error came back after 40km of driving.
Once I receive the 2 new sensors from Rockauto I'll install them and reset computer again.