2003 Pontiac Grand Prix engine is lean on bank 1

2003 PONTIAC GRAND PRIX
137,000 MILES • 6 CYL • FWD • AUTOMATIC
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FSTLANE
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  • 1 POST
I just installed this used engine and my code scanner says running lean on bank 1, any ideas what this could be , and how to correct it?? thanks !!!!
Dec 31, 2009 at 8:49 PM
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JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
If you just installed the engine, check for vacuum leaks. Also, has the check engine light come on with other codes?

Let me know, and Happy New Year!

Joe
Dec 31, 2009 at 10:42 PM
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