EGR tune map sensor

[Waterloo]

If you are going to do the full tuneup in a few weeks, and not having issues, I would leave that sensor alone for now. Mine snapped right off when I removed it. I had to drive it out with a small screwdriver. As far as cleaning it, yes, after it has been replaced. You can easily pull it periodically and brush it off with say a tooth brush. No solvents though, just dry brush.