I got a 94 G20 automatic. I have been having this hesitation despite new wires, plugs and cap and rotor. When the car is warm and the a/c is off, the hesitation isnt so bad. I might get 1 or 2 small ones before 4K RPM (fine after), but if the car is cold. It starts to hesitate bad, when the ac is on. It just becomes ridiclous to drive around. WHat do you guys think it is?

http://www.se-r.net/engine/cold_idle_fix.html

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