Hey folks, just changed out one of my O2 sensors yesterday (Big thanks to Dave B at Southpoint) and have a few problems which may or may not be related to it.
1) The car gets a little less gas mileage since I changed the sensor.
2) This morning when I started the car it hesitated a bit and died.
The car drives fine other than these two problems and before I changed the sensor the car hesitated and stalled once when I put the car in drive right after I started it. Before, if I let the car idle before I moved it out of park it was fine. Now it hesitated and died while it was idling in park and it has never done that. Please let me know if I screwed something up while replacing my O2 sensor and if I need to take my car in or what. Thanks

PS- I replaced the Bank 1 Sensor 1

 

mine stalls when shifted into Reverse, no check engine light - right now i'm not even trying to fix it
it happens ocassionally - i'm suspecting dirty Idle Air control valve.

Nick.

 

I was thinking the same thing. I've had this problem twice already and it usually happend right after I cleaned the TB. Wth mine is that usually at cold start up mine will then to stall and then shut off. I usually rev it up a couple times and it will stabilize. I've only had it die out on me once when I would put it in drive. But anyways you might want to try cleaning the idle air control valve. The very last time I cleaned it I took the TB off and cleaned that and the IACV. You can use intake cleaner. If that doesn't help, hopefully some one will have other suggestions. Good luck.

 

Where iexactly is the IACV and does anyone have a diagram which will show me exactly where it is? Also anything I need to be careful of when cleaning it as I know some people have had problems after cleaning their TB/MAF.

 

nadeemp8, does your car have a cel? is so you should pull the code but it sounds like it could be the ignition coils..

 

Nope, no code or light, cleared it out when I replaced my O2 sensor and hasn't come back on since.