car drives but lack of power , engine works on loudly but car drives very slow andonneutralgearorp gearengine has not permanentnoiseandsome strange noise coming from around throttle body or upper gasket?????please help,lastly like week ago i changed timing belt and now i checked it is on marks,what can be problem of car ,i drove like 120 miles after change of timming everything was ok , and now its loosing a power,whatcouldhappen?????i scan car and it shows 0141, po341,po140,po171,1580....please help????anyadvise???