what is wrong

1997 PONTIAC FIREBIRD
90,000 MILES • V8 • 2WD • AUTOMATIC
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JASON
  • MEMBER
  • 1 POST
1997 firebird 5.7 new complete tune up keeps showingp1074 fuel lean bank 2 and 0300 misfire
Apr 20, 2011 at 5:38 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Lean fuel condition could be caused by one of the following below:

1.Vacuum leaks
2.EGR and PCV valve.
3.Low fuel pressure.
4.Dirty fuel injectors.
5.Mass Air Flow Sensor.
6.Oxygen Sensor.
Apr 20, 2011 at 5:41 PM
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