A couple of weeks ago i was lowering my 00 civic SI, finiched the job and when i turn the car on to go test drive it, the car almost died at iddle. When the car is running it runs perfect the problem is when it come to a stop it wants to die, it doesn't but almost, after striggling for a bit it iddles ok (900rpm). The check engine light came on about 3 days after. The code reads 45 SYSTEM TOO RICH OR TOO LEAN. I already checked the spark plugs (platinum +4 bosh)and they look ok, I relace my MAP sensor for a new one and nothing, please help any suggestions are welcome. also is it possible for a o2 sensor to fail from one day to the othe????