30-57 Buick Posted February 9, 2005 Share Posted February 9, 2005 Have a 85 Z28 super charged 305 TPI. Started throwing codes 12,34,44,&54 Starts rough, engine light comes on while stopped at lights, then goes out after driving at slow speeds, Then when hot on the freeway comes back on. Any suggestions on where to start repairs. Link to comment Share on other sites More sharing options...
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