cars throwing a CEL of 4 long flashes and one short...i checked the CEL guide up top and im guessing its 45-fuel system running to rich or lean...but i had a neighbor read it (mx621).. and he said it was o2 sensor...replaced that and CEL is still on...so im a little lost...im guessing its the fuel system problem...if thats the case could that be bad injector(s)?? any help would be great

 

find some1 with a obd2 scanner or go to advanced auto and get them to scan it so you wont be "guessing" and wasting your money on **** that isnt bad

 

#41 is the primary o2, it wont be anything else. If you replaced the primary o2 im not sure what to tell you.