Hi I have a 1999 Lexus RX300 all wheel drive I changed the timing belt the tensioner plugs coil packs solenoids coolant solenoid timing solenoid oil control valve still rurns really bad still will not stay running constantly stalls has no power and nothing's coming up on codes for anything else that is Miss or not working please I need help I have no idea what else to do or what else it could be I have checked all of the fuel injectors throttle body what else could it be please let me know,,,,
Thank you....