92 GMC safari 4.3 liter all wheel drive. When I start it, it will run fine for a few seconds then it idels real rough and dies. I start it again and give it some gas and it will run fine again for a few seconds then start missing and want to die. If I give it gas during this time it hesitates real bad then comes up to the proper RPM. I have changed the fuel filter and the TPS.
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