what up guys i havent been on for a while but maybe you guys could help me out on something ok most of the time when i use my car during the whole day and done for the day and park it in the garage i notice a very strong fuel smell and its been happening since i changed the o2 sensor but before i changed it that never had that smell it was after i changed it i have a 97 grand prix se with intake thats about it so can anyone let me know what it might be ir whats wrong

which sensor? You could of hit and injector loose if you did the one near back spark plugs.

well i did the one in the back i didnt know there was more than one if there is can you let me know where its at but i dont remember taping anything when i was removing the sensor

These is another in the middle of the car underneath the front seats in the exhaust system. Should be on the passenger side of the exhaust, where the "ubend" is.

well hey man thanks alot for telling me where it was wouldnt have even imagine that it was there i went to autozone bought it and put it on easily thanks alot i appreciate it

No prob. Did it fix anything?

I've always read that the rear O2 sensor has nothing to do with fueling. It only tells the PCM if your cat is working correctly or not. So I doubt it will fix your problems. Also... which brand of O2 sensor did you put in on the top one when you replaced it?

It's also possible that you have a bad injector or a bad injector o-ring. That could cause tiny amounts of gas to leak out, thus causing you to smell it.

Extremely common for injector o-rings to go bad. Its the cause of most engine fires on 3800s. I would definetly replace them to anyone who hasn't!!
(you need two for each injector. zzp sells them in 6's, but its a standard o-ring size)

You really need to check this out. Dont go around driving it or even starting it. Or else you might lose your GP for good. Lots of horror storys have been caused by an old injector o-ring! Please check this soon. Is there any fuel on the valve covers and/or LIM?