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After adjusting my air mixture screws, I noticed now when I pull up to a light and stop, the car will shake CRAZZZY like!! but if I throw it in neutral, no problem, but in drive stopped at a light with the brakes applied, its crazy bad, soon as I let off them, no problem. Vacuum line? Im stumped, please lets not say its the damn torque convertor. ahaha well I guess basically Im looking for an answer, just thought its weird out of no where this problem has arisen.
 

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Did you use a vacuum gauge to adjust your engine idle? It sounds to me like you need to bump your timing up a degree or two, and/or re-set your idle in gear. I think an auto trans car, in gear, should be around 600 rpm, off the top of my head.
 

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try it with the vacuum line unplugged going to the power booster and be sure to plug the vacuum back to the engine. If it goes away you have a bad vacuum line/fitting to the booster or the booster itself.
 

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Yeah, sounds like a vac leak somewhere....or idle speed a bit to low. (both?)
 
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