weird idl/vac problem

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corey240
Posts: 3306
Joined: Thu Sep 08, 2005 10:04 am
Car: 1993 Nissan 240SX Base Drift Machine
Location: Cumberland, MD

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ok so the car idles at 1200 and then after a couple min drops down to 500 and the vac drops from 20 to the needle jumping between 10 and 16. what could this be from? the vac is a solid 20 all the time, when i drive ect, but when it idles low it drops.


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