O2 sensors...

[Infamous 1.8t]

ok i put turboback exhaust on mah jetta and now the CEL is on and reads a Cat code...i dont have a cat on the exhaust.

ive heard rumors about "fake" O2 sensors that read that your car is running normal hence no light on.

any ideas???

[r34drifter]

Yea my bro is a mechanic and I think I heard him say that you must put the original O2 censor in order for the car to work properly or something like that...

here's a thread related, you can ask the B18Sol about it

O2 Sensor Installed - Idle Issue Stable

[JGT8229]

ust get some piping, test fit it, amd mark where the 2nd o2 sensor wil go, cut a hole, weld a nut to it, and screw ur o2 sonsor back into that nut.

What you need:
1 package of spark plug non-foulers. 18MM


So you have here your basic spark plug non-fouler, it is orignally used to recede your spark plugs out a bit so they dont foul from a rich condition

What you have to do is drill out the inside of the top part, so the o2 sensor can fit. ONLY DO THIS TO ONE OF THE NON-FOULERS
side by side comparison of drilled out nonfouler and original
02 sensor fit inside
Screw the two nonfoulers together with the undrilled one will have threads showing on the outside.
Then attach it to your post cat o2 sensor (you will have to remove it)

Then screw it back into the test pipe, reset your cel code, and drive away!
i own dont i :thumpup:

[Infamous 1.8t]

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