1988 chevy astro van with 80k on a rebuilt engine, 280k overall. the van runs smooth and well except during hard acceleration or a steep climb. This is when the van will have a quick chug or surge, if the van shifts down to a lower gear then the frequncy is less until the van reachs a steady speed. The spark plugs and wires are in good shape, no check engine light and no engine codes appear after checking for codes.
Nov 14, 2006 at 11:12 AM