[W///]

Originally Posted by greekplaya020

Hey guys I'm new in the forum and just bought my first 08 E90 M3 with 50k miles. The ptevious owner said he had replaced both throttle actuators which made me choose that specific M3.

Anyways it's been 4 weeks since I've owned the car and 1000 miles later and ice done/noticed the following.

1. Fresh oil change and send out the oil for analysis to check for rod bearing symptoms. ( still waiting on results )

2. The transmission seems very clunky in reverse and also in 1st and 2nd gear. When it's in neutral it also makes this fluttering noise you can hear but only in neutral with the clutch released.
I've read that this is normal and also it was confirmed by a BMW tech. Eitherway I'm still going to change the transmission oil next week and see if that helps shift things better.

3. I put 2 new tires up front a week ago and when I went to start the car it through th3 check engine light along with DSC light and brake light on and went on limp mode. I went out to autozone and the code that came up showed a throttle actuator which I thought was odd. I reset the system and it drove fine for about 2 weeks before the dash lit up again with all the same codes one morning. I turned the car off and waited 5 minutes and then turned it back on and everything was fine.

I decided to bring it to a BMW specialist in the area and see if his very expensive reader can tell me if my actuator is going or any other issue it might have. He told me that my actuator in bank 1 is going so I'm going to have that done next week.

4. There's been 3 times in the morning when I've started the car and it's made this loud whining noise from what seems like the belt. It goes away after it's warmed up but the belt seems fine. It's a 9 year old car so I figured I'll change the belt as well next week.
Does anybody have any input if I should go on and change it or if it might be a different problem and not the belt?


Any advice is appreciated!
Thanks in advance!

While you change the TVA, the plenum has to come off so you'll have plenty of access to see the condition of the belts. Mine looked OK so I didn't bother.

Also consider doing your spark plugs at the same time if you don't know when they were last changed. I personally prefer to do it with plenum off because the 2 rear ones are kind of a pain to get to, so the extra space is welcomed.