Nau

About the plugs - what BRAND (aside from Toyota - is it NGK by the way?) is good for our Lexus? Right on, Steve!

My EGR went last year at 72K miles. Did the weird ideling and stalling. ← So what was wrong?

Thanks for your advice guys! I'll do that. Also I forgot to metion that idle RPM behaves strange: Say I stop at traffic light, idle can be at 1200, and go down to 700-800 in 1-2 mins. Or it can go right down to 700-800. Is it related to EGR problems? Car has 158K on it... Thanks again!

A week ago check engine lighted up on my '90 ES250. It was on for two days, then turned off by itself. Code showed was 71 - EGR, right? (Sorry. I don't have a manual :(( ) I tried to suck on the tube which goes into valve, it opens/closes just fine, the hoses which I can see from the top look good. I get also quite a lousy mileage - 17-18 city MPG and 23 highway. Tune-up 2K ago. What should I look into? Thanks!