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Re: 98 k1500 5.7 stumble on light acceleration
Most likely not the IAC.
I would try a good fuel injector cleaner (Like SeaFoam or 44k). If it only does it cold, poor fuel evaporation from bad spray pattern is a possibility. Did it start doing this after the weather got colder?
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'04 Cavalier coupe M/T 2.2 Ecotec
Supercharged 14 PSI boost, charge air cooler, 42# injectors
Tuned with HP Tuners
Poly engine/trans/control arm bushings
Self built and self programmed progressive methanol injection system
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