WELL ...... 03 XKR I did what you said I checked everything up and down ( 3 times ) I changed the O-RINGS made sure everything was secure and tight cleaned the MAF sensor also ....................... thats when I realized my mistake.... like an A--HOLE the MAF plug fell down into the engine yesterday and I never plugged it in....... well today I found it and all is well again... no codes at all back to normal.................. THANKS FOR ALL YOUR HELP............TONY:icon_ deadhorse:

 

Glad you got it up and running again; the best repairs are the ones that do not cost anything. Ironically, those are usually the ones we cause ourselves. Anyhow, happy to help.