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    1990 Sierra Baffled

    1990. Gmc. Sierra 1500. 350. 5.7 v8. Idles great. Runs strong. Then cuts out like its starving for fuel. So far I have: Dropped tank and cleaned it. New fuel filter. New fuel pump. New ECM. New Map sensor. New ignition control sensor. Vacuum lines good. No shorts in the wires that I can see...
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