Chevrolet Q&A

Ask Your Question

2004 Chevrolet Silverado 1500 Question: Twice this week my check engine light has come on so both times I ran a code tes

 

Question

kimkingtaylor, 5.3L V8, Houston, TX, March 01, 2013, 05:22
 Rookie

t with my Actron tool and both times it say my pick is running too lean. What is the cause and fix for this?

2 Answers
Flag This
  • Answer #1

    Greg's Orange Auto (13020 Answers) , Orange, CA - (714) 361-9386
    globalhelper March 01, 2013, 06:46
     Master

    poss vac leak or mass airflow sensor. ck for vac leaks and clean mass air flow with proper cleaner. this would be a good start

    Reply
    Flag This
  • Answer #2

    Spring Branch Imports from Spring Branch Imports, March 01, 2013, 07:12
     Technician

    You should have 45 psi on the fuel rail. If it is low, it will run lean. It could be a clogged filter or a worn pump.

    Reply
    Flag This