Help!!! I don't know what's wrong or how to fix it. A week ago my E39 started to act up. At high RPMs (5000 to 6000) I get a sudden loss of throttle. It doesn't matter if I am in sport mode or not. I then have to wait until the RPM's drop below 3000 RPMs or shift into 5th or 6th gear to force the RPM's to drop below 3000. Once the RPMs are below 3000 I get my throttle back however it doesn't deliver as much power as normal. To reset the problem I have to turn the car off and back on. Any ideas? Is it the computer? Would a BMW tech be able to plug it into his computer and find out the problem? Please help!