MeanWS6

trying to nail down my problem, either bad o2's or exhaust leak.
Car runs like crap, cant idle, black smoke, sluggish from a roll, and HORRIBLE gas mileage

Can't find any exhaust leaks anywhere, will continue looking in the morning with some daylight instead of my crappy garage light

getting:
P1153: Heated Oxygen Sensor (HO2S) insufficient switching
P1133: other side

Do you think its the o2's or I have an exhaust leak???

snake charmer

iTrader: (118)

sounds like the o2s might need to be replaced. the computer will dump extra gas since it does not know accuratley what it should be mixing.

70T/A400

iTrader: (2)

Change your oxygen sensors. They are probably caked with carbon from running too rich. It is common with long tube headers.

blkZ28spt

If you change O2's get some made for the C5. Bosch part #13111 at autozone is one way to get some.