I'm new here so hope this is right. I have a 93 Z71 Xcab 4x4. I've owned for 14yrs. No problems till now. Trying to start for the first time in the mornings is a challenge now. It floods bad, i accelerate to clear it out. Going down the road if i accelerate it will nose dive then pick up if i let off. At stops it might die. And even after it has warmed up it still is hard to start sometimes. At other times it runs perfect. I have added fuel injector cleaner, but this problem is beyond that. Fuel pump and filter were replaced 5yrs ago. Normal tune-ups oil changes etc.... Are sensors bad and how do i check those. Is computer bad???? Note: Truck is all original with TBI it has not been changed. Thanks.