The EGR valve is just one possibility. However, combining the check engine light with another issue on this list would make the valve a more likely possibility. If your BMW is experiencing any of these problems, then it is wise to get it checked out by a professional. Potential EGR Problems. So, your BMW has the symptoms of an EGR valve problem. Figure 1 To access the driveshaft flex-disc, you have to remove the exhaust system and exhaust heat shield. When replacing, at the minimum, replace the self-locking nuts that attach the driveshaft flex-disc. I prefer to replace the bolts too. The driveshaft flex-disc is also referred to as the Guibo. Raise and support rear of vehicle on jack Possibly, but engine mounts seem to fail more frequently on the 540, due to the engine torque (driver dependent as well, I'm sure) but also due to all the engine oil leaks from the front timing covers, which causes oil soaked engine mounts. Position the jack under the oil pan. Stand a 2 x 4 piece of wood vertically, that's about 6 to 8" in height, on the jack pad. Position the top part of the 2 x 4 on the oil pan and jack the engine up about 2" or so. All you need to be able to do is slide the old engine mount out and put the new engine mount in. For example, a thumping noise when the transmission is put into gear or when the vehicle is accelerating is a classic symptom of a bad mount. Cracked or broken motor mounts can be an annoying source of vibration and noise, typically a clunk or shudder when accelerating hard. Tranny mounts have similar symptoms.. It is generally a In this video I show you how to replace the engine (motor mounts) and transmission mounts on your BMW E90 330i. The car shown in the video is a 2006 BMW 330i In this video I show you how to change out the motor mounts on your E90 BMW. I opted to drop the subframe to create enough room to get the mounts out. This Seems normal. As mentioned, it's normal for voltage to fluctuate between 12-15v. If it goes outside this range, you have issues. These cars charge the battery when there minimal load on the motor. IE during coasting, deceleration, or any other light duty on the motor will raise voltage. If there is a large dump in the car or there is a large Use a jack to lift the knuckle on the strut until the alignment mark on the knuckle and strut meet. After that, position the ABS bracket in place and reinstall the pinch bolt. Thread on the nut by hand before counter-holding it and torquing the bolt to 81Nm. Use an 18mm socket and wrench for the nut and bolt head. Here are some of the most common broken motor mount symptoms: Abnormal vibrations . The rubber or liquid-filled portion of the motor mount helps absorb vibrations from the engine. As such, when one or more motor mounts fail, vibrations from the engine may travel through the chassis and into the cabin of the vehicle. 2bj3w.