07 525xi drivetrain noise advice
Have 101k trouble free miles on my auto 07 525xi and have kept up with maintenance recommended here on the forum.
Last 500 miles a noise started from bottom of engine. Originally thought it was wheel bearing but noise is only there when engine under load/accelerating, it disappears when coasting or I place it in neutral on highway. Its a growl/rumble from low end of engine, increases as you accelerate.
Took into indy, no codes, no issues with drvesafts, or bearings so they recommended a transmission fluid changed and new pan, car is shifting a little smoother but same noise is still there and they are stumped. Getting concerned as have 1200 mile trip coming up.
Been reading forum - could it be the x drive or transfer case? Anyone had similar issue or advice on next move to diagnose or try to correct?
thanks in advance John
Last edited by hubcap; 12-02-2016 at 05:56 PM.