Quote Originally Posted by BillionPa
something in the fuel injection system could have failed, like the pressure regulator.
+1

Check all your sensors voltage. ohms, blah blah blah.

If your FPR is stuck close, then your going to get a lot of gas and run rich. If it is stuck open. then when you get to a stop light the pressure will drop and will cause the car to almost stall. This is from my experiance with the FPR on my Honda, except some retard put a screw in there and made it to where the gas mileage sucked.