i need to replace the oxygen sensors on my xj, it failed emissions. does it matter what brand of 02 sensors i get? i found some for $20-$30 bucks on rockauto, and then there are Bosch 02 sensors for $40.

thanks guys.

 

I personally havent had a issue, others will say they have. Nice trick, run your engine till the exhaust is hot. The extra heat really helps to get those stuck o2s out.

 

I seek out NTK sensor for the 4.0, as they are what your XJ came equipped with.

I have no personal issue with Bosch, but there are some that have an issue and it has been traced to a slightly different resistance value on the heater circuit.

Stay away from anything universal and don't buy engine management sensors on ebay UNLESS it is a confirmed brand name! There is no lack of absolute crap junk floating around for sale on "the bay".

 

ill have to do that, just gotta be sure not to burn myself on the exhaust pipes

 

alright i may look for those then