Please check your information about the s420 in 89 since I've had it for 20 years.

190,000 miles, new plugs and plug cables and only ran Chevron 93 for 19 years. Ran great until cheap gas intro in system.

I retired in 99 with 900,000 in one ira and 500,000 in another ira. Both with American Express FP, Clinton didn't care, Bush protected the country but failed in economics.
Obama killed what's Bush left to fail. Nafta, and promoting American businesses to invest over seas has killed our economy.

I still have 500,000 in invested cash other and drawing interest only for retirement so don't lecture me on my failures. When you get there, look inside your own before you criticize. Professional investing is the way to go, but with a corrupt federals cashing in, causing crashes, it's hard to win everyday.

Should I have stated my income before I requested help on keeping a 21 year old classic on the road?

Look it up and inside before answering again.

Does anyone else have an answer about a 89 S420 idle problem? I was only asking if a oxygen sensor would make a difference, but if you don't know they were made in 1989 please don't help me.