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    1990 c1500 5.7tbi Rough idle when warmed up Help Wanted!

    Hello all, first post here, I am needing some help with a rough idle issue I am battling! When warming up the engine runs smoother but has a noticeable roughness in it, once at operating temp it idles rough, even worse in gear with the ac running, it almost seems like a miss at times only at...
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