FWIW '92 Teg two years ago pump started acting flukey. Had pump replaced, still did it. Yanked back seat and gator clipped to test voltage while wife was driving. I was getting voltage fluctuations that were causing flow problems and fuel starving at WOT. Tested Alternator, good to go. Turned out to be the pump ground loop wire making intermittent contact. I gave it a new ground and no problem since then.