4 codes for throttle sensor. BTC if you can solve it
My 05 auto is300 was running perfect. Valve cover gaskets were leaking on gte, so I replaced them. After re-assembling rpm idles around 2100-2300 with 4 cel codes. Throttle responds perfectly raising rpm from 2100, then once released it goes back to 2100.
1. Put in new spark plugs with the same iridium ones that were in there. (So shouldn’t make a difference)
2. Throttle body had really bad deposits, so I used a toothbrush and simple green to get rid of it all. After I removed all the black deposits, there was some space between the side walls and metal valve when it was fully closed. (Metal circle valve must have eroded away on the top and bottom edge after 230k miles?)
3. Sprayed engine bay down with simple green and hosed off everything while throttle body was fully removed (just plugged hole in the Y-pipe.). Maybe water got into one of the three throttle body connectors and shorted it?
4, Three codes were P2138 P2134 P0122 P0222