You most likely have a leaking fuel pressure regulator.
The regulator has a small rubber diaphram on the inside that sometimes leaks. This will pull fuel directly into your intake manifold. And in severe cases, it will light off. (Your BOOM)
The reason your O2 sensor is sending a code is because it's reading a rich fuel mixture that your computer can't compensate for. And you're probably fouling your spark plugs as well.
This is a $20 part, and it's easy to replace if you are so inclined.
If I've helped you, please vote for me, as I depend on this to pay my bills. Thanx, Ernest.
Sunday, January 24th, 2010 AT 9:29 AM