Have you checked the fuel filter and the fuel pressure? Fuel pressure should be aound 65 psi. Low fuel pressure or restriction of the fuel sustem can cause the symtoms you describe.
Along with checking fuel pressure and fuel system restrictions see if the screen of the mass air flow sensor is clogged (dirt, debris, rodent nest in cold air intake, etc.) And check air filter, all of these could set your code 34.
Just some Ideas, let me know.
Dan
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Thursday, August 13th, 2009 AT 11:46 AM