Howdy. I just replaced my Y-pipe (Warpspeed) and 2 O2 sensors (front bank-precat, and post-cat, both direct fit Bosch sensors). The car was running fine for 3 days, until today, when I decided to reset the CEL, which was still lit b/c of the bad O2 sensors. After the reset, the car was a bit slow to start, and now won't idle. It tries to idle at about 500-600 RPM when the engine is cold, but after warm, it drops to about 300-ish, and pretty much just dies. CEL has not come back on, and it seems to drive OK, except I have to keep my foot on the gas at all times to keep it running. This is not too fun with a 5-spd in city traffic.
I tried resetting it again, a few times, and there have been no changes. Any ideas?
Thanks in advance.
Adam

 

You probably have the screw in the wrong position. Try resetting a few more times and see if that fixes the problem

-matt

 

Thanks for writing back. I went back out with a flashlight, and discovered that you were correct. In resetting it multiple times, I got turned around, and had left it in the diagnostic position. Thanks again.