hesitation during acceleation

  1. WT_suburban

    occasional rough/hunting for idle, and hesitation and jumpy acceleration

    Hello people of the GMT400 forums I have been trying to hunt down an issue with my 1994 GMC K1500 suburban for the last 3 weeks now where it will occasionally on start bog and hunt for idle on start up, as well as under hard acceleration hesitate and jump in RPM. The truck has and L05 5.7L TBI...
  2. Slammed94Rado

    NEED HELP!!!

    I have a 94 4.3l tbi "5speed" it has a hesitation underload at lower rpms when im getting into the throttle it falls on its face but if I push through it, it will come right out of it I have replace tps, rebuilt fuel pressure regulator, new injectors, fuel filter, cap, rotor, inspected wires...
  3. C

    Code 32 and hesitation when cold

    1994 k2500 6 lug w tbi 350 and 4l60e trans. When i start my truck in the morning it always fires up no matter what but when i start driving it stutters and hesitates (later goes away and drives normal as it gets up to operating temps) when i get on the highway everyday i pull code 32 every time...
  4. T

    1988 k2500 tbi wont run correctly

    My truck will idle just fine but if i start to drive it has very poor acceleration and wont really go any faster then 30. If you go up a hill its even worse. Eventually when it gets warm it will start to die without throttle intermittently and backfire. I have replace the Icm, the fuel pump. It...
  5. L

    Please help! ‘90 k1500 tbi Chevy performance mild build crate motor

    We’ve been at this since October so I’ll try my best to put every part number here So I have a 1990 Chevy k1500 with the tbi setup stock. Then added these Chevrolet Performance 350 Vortec C.I.D. 330 HP Crate Engines 19433030 Summit PN NAL-19433030 Long tube headers SPN HED-69440...
  6. S

    97 k1500 5.7L hesitation problem?

    I need help diagnosing this. I'm throwing a few codes including P1345 P0430 P0101 P0161 I honestly have no idea where to even start. But my truck has been driving like crap. It hesitates on acceleration pretty bad and makes a rattle kind of noise. Only in 3rd gear. And only when accelerating...

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