Is this normal? (Sound up)
Ever since I’ve owned this car (2 years) the idle has always been like this, slightly fluctuating, and I’ve done all my research and checks, no air leaks, no codes, I’ve taken it to a few shops, they say everything looks fine. But it gets super annoying, because I have a bad motor mount that I haven’t gotten to. Bad motor mount plus 600rpm is not a good idling experience. Any input helps!
Specs 2011 E90 328i x drive N52k
Ps: Also have noticed when I turn on The A/C it stops fluctuating and I can actually idle normally! And on cold starts it fluctuates a little more than normal, but have other days that my car won’t even fluctuate RPM, it feels like a normal car, even on cold start.