I'll check out the links you provided.

25 years ago, I didn’t think twice about crawling under a vehicle totally supported by jack stands, with the wheels off no less. Now I look back and think what in the world was wrong with me! How insanely stupid could I get?

I’ve been thinking about fabricating some block type stands out of 2” x 12”’s to sit the car up on. Sorta like oversized ramps without the ramp. Think it would be much safer. Yeah, thinking back I can remember my father-in-law telling me about having a ramp kick out on him one day. He was working under the vehicle, the phone rang and he crawled out to answer it. While on the phone with no one around the vehicle, out pops the ramp and down it came. It would have crushed him. Makes a short lift look pretty inexpensive in comparison.

Oh, if it is the oxygen sensor, what is the best way to reach it? I suppose it is so far back from the engine, you cannot reach it without supporting the vehicle and crawling under.

Thanks again,
Rich W.
Apex, NC