Need to replace the upstream (before cat) O2 sensor on my 1998 Acura TL. Can't figure out the easiest way to do this since removing the heat shield seems a pain. Anyone done this before? What's the easiest way to do it?

 

It would help to identify 2.5 or 3.2 TL. On 2.5TL, the battery must be removed to gain access. Try downloading the online manual for detailed guidance.

good luck