o2 sensor going bad?? experts please help

[eclipse0508]

i have a 95 eclipse gs....i only have a mozart axle back exhaust and intake....
when i start my car (anytime) it blows white smoke...its not my headgasket because that was redone a few months ago... i believe it may be my o2 sensor?? What do you guys think? Any sugestions are welcome. It goes away after a while of driving......

i was thinking maybe because of my exhaust......when i installed it i never reset the computer?? should i have done that??

 

[jtmcinder]

...its not my headgasket because that was redone a few months ago...

Was it blowing white smoke before the headgasket was replaced?

- Jtoby

 

[blackGSX2g]

A little bit of white smoke when you first start it up is normal...water condensates in your exhaust when it goes from hot to cold, so that burns up at first. It shouldn't last that long though. If your o2 was going dead, you would be running rich and kicking out black smoke and have declining gas mileage.

 

[Staytuned]

If it is sweet smelling thick white smoke that never goes away regardless of the operating temps of the car....then it is coolant being burned.

Condensation (thin white smoke) should dissapate after the exhaust and engine are up to operating temps.