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Originally Posted by weasel56
#8 is the idle control motor... come to think of it, I'd might even have an extra one laying around in my toolbox. (probably was sticking from carbon and cleaned up back to full working order)
#7 is the DISA flap, which controls the variable intake runner length.
I would check the smaller hose on the throttle boot that goes to #8 as it tends to crack between the ridges on the outer radius of the turn... just stick your fingers back there and feel for splits in the hose. (one of many common likely causes)
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Can the DISA cause misfiring and the rough idle I am experiencing? X5 stalled when i let off the brakes and let it coast. Won't stall if completly stopped or driving, but still idles very rough at a stop.