[wayne4444]

Wondering if anyone can help with this Aveo...failed e test
co% .58[should be .37]..curb idle limit .70 had .70.. hc limit 66 had 9....nox 505 had 15...only a high co count...at idle runs smooth reads 18 vaccum fuel trim numbers 1% ,a/f ratio 14.6-1,map 5 psi?..not sure cabout that one....anyone run across such numbers?....please let me know if you can help out..thank you