I have a 1991 Lumina Euro 3.1L that has recently started cutting out when accelerating and the RPM goes above 3000. When this happens, the engine will cut back to an idle level and will not respond to further acceleration for 2-4 seconds. Also, the engine misses above 4000 rpm when in park.
Anyone have any ideas? Seemed to me like a fuel system problem, so I replaced the filter but that did not help. I thought maybe an ice problem(cold in MN), so I tried some heet which did not seem to help, either. Could the fuel pump be going?
Thanks for any help/ideas.
Chris