2003 idle

  1. MrFixIt

    Help, 03 5.7L hemi Lost idle

    Can anyone explain why I lost idle after a tune up in an 03 5.7l hemi? I replaced fuel pump/regulator, sparkplugs, airbox sensor, Throttle Body, air filter, and a couple other things. The engine sounds fine when idle it held at 800RMP or higher, but has a rough idle at 550 rpm and dies shortly...
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