1st my 2002 monte carlo with 3.4 the low oil pressure light would come on at a complete stop replaced oil pressure switch ,IT hasnt came back on, it also hesitates around 40 -50 mph now I have a cyclinder 3 misfire. with engine light on changing coil packs and spark plugs and wires any other suggestions

 

Could check air filter and put in a new fuel filter . Did replacing the coil pack solve the misfire problem ?

 

ty for replying yes replaced all 3 coil packs and plugs and wires drove it today working great so far