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Whenever I turn on the A/C, the RPM's starts to move up and down while I'm at a stop. The fluctuation in RPM is large enough to make the car jump forward if I don't firmly press the brakes. I tried turning the car off and turning it back on, but the problem still persisted. Has anyone experienced this with their IS? Any recommendations as to what the problem may be?
i have noticed this with mine but got the tsib done for the carbon build up and mine has not done it in awhile. I used to turn on my A/c and the same symptoms occurred for me.