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once i turn the the ac on it bounces. then it clicks and it stops for a few seconds then it will click and bounce again. it happens over and over it keeps cycling like that. having knowledge on ac systems and done work to them tells me it could be cycling on and off cuz of the pressure switch due to low refrigerant but the rpms will still bounce everytime it clicks back on. doesnt stop no matter how long i drive. y would the ac make it do that? with the ac off once its warmed up it will stay at about 2.25k for about 5 seconds or so then drop to about 600 (like at a stop light or something.) then slowly move back up to 2.25 then drop again. could be a vacuum problem thats all i can think of but wouldnt that throw a code??
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