As stated, my 2006 DTS reads 27 percent throttle on my scanner's live data. Fully warmed up. Idles sounds and reads normal 700 ish in park and all gears. Revs good etc. Nothing is bunched or pushed against accel pedal. Any ideas? I also realized yesterday that it has no 1st gear. Starts in second even from dead stop, and shifts very high rpm unnecessarily late into 3rd. Even when I manually pull it into first. Could this be because it thinks it's high throttle from the get go? 89,000 miles. Today I will be spraying carb cleaner around looking fro vacuum leaks, but so far looking underhood shaking connections etc around a bit, I don't hear vacuum leaks etc or see anything

 

I will check what my 2006 dts idle throttle position is