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      02-15-2020, 01:25 PM   #1
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Drives: 2011 e90 M3; 2018 X3 M40i
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Higher usual RPM at idle

I noticed that for past couple days the rpm at idle is just slightly higher than usual— about halfway between 500 and 1000 when it's usually just a tick above 500. Almost as if the AC is on (it's not). I also heat some whining noise from the engine when accelerating. Could this be idler pulley issue? No codes per Carly. Thanks
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      02-15-2020, 01:56 PM   #2
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Adaptations for o2 and cats..will solve your problems if not ,,,,then your o2 is dying or cats problems .

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