Hi everyone, I am new to BMWCCA and this is my first post. I just purchased a 2001 740i today. The car was a great deal (we will see about that). It has 175,000 miles, runs very rough with knocking sounds, the GPS display doesn't work, the radio turns on and off, I am getting error codes for camshaft control, knock sensor 1, knock sensor 3, air intake temperature, and engine temperature. I did however drive the car 50 miles home with no issues aside from the noise. But hey, it was only $650 and the body and interior are in good condition! I will be diving into the car this week as I am off for the holidays and will be uploading pictures along the way. Any helpful tips or advice is always welcome. Cheers!