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P101 again


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Good morning,

 

2003 5.3 LTR 110,000miles - auto trans - 2WD

 

I have been fighting this issue for 2 years off and on now. I keep throwing this code and my dealer has put a new MAF on after I had replaced one previously. I let them keep my truck and within 2 days the code came back.

Any clues or ideas? I hope to get my truck back tomorrow as I am heading out hunting for a week.

 

Every time this code is thrown the fuel econ is horrible and it does not run as smooth as it should.

 

I have replaced the MAF, CTS, plugs, wires, EVAP, manifold gasket, inj O rings, fuel pump and filter.

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