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Old 04-12-2013, 03:38 PM   #17
74project
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Join Date: May 2009
Location: Las Vegas
Posts: 216
Re: 5.3l stumbling, bad gas smell on passenger side

What does you power look like to your fuel pump when it is at idle? Try running a hot to your pump and bypass your wire harness. Then drive it. This will tell you if it's an ecu problem, power issues, or fuel related.
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