Truck seems to not want to go at all like it's flooding when even lightly accelerating from a stopped position. Have to feather the gas pedal to keep going. I have already changed the fuel filter, fuel pump, both o2 sensors on exhaust pipes, but still throwing same o2 sensor and fuel filter codes which is why I changed them to begin with. Check engine light had just come on recently as well. Idle pressure is steady at 35 when rpms are about 650-700 at startup but rpms do jump around by a few digits though nothing drastic. What is the next thing to check?
What makes this problem better or worse?
Is kinda better after running for a bit
How long has your 1998 Chevrolet C1500 had this problem?
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Oxygen sensor and fuel filter codes? What codes are you getting?
I don't know of a "fuel filter code".
If it's a fuel control code - like engine lean -- then I'd be looking for vacuum leaks or mass air flow leaks. Air intake control concerns. Especially if it affects both banks. If you have "oxygen sensor codes" on both banks of the engine, it's almost certainly not the sensors...why would both fail simultaneously?
Seek the guidance of someone local who is knowledgeable and can help test.
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