Quote:
Originally Posted by sgrice
One other question - have you noticed a "shudder" when turning off the ignition? If so, it might be a clue that you've got CBU on your throttle valve that is preventing it's normal operation. I'm told (see post #3 on this link) that another name for the throttle valve on diesels is an "anti-shudder valve." I had noticed just such a "shudder" before embarking on my various CBU cleanings about 6 months ago. The "shudder" went away afterwards and (knock on wood) has not yet returned. |
First off, thank you so much for your extremely comprehensive response. I have read a lot about CBU, and with my high milage I can totally see this being an issue. Unfortunately I am just way too busy right now to deal with a DIY project...if it was the fall I would do this immediately! But the information you have told me is great to know for the future as I plan on keeping this car for the long haul.
To answer your question about shudder..YES! I have been experiencing a shudder when I turn the car off. I thought it was just me. Guess we are on to something here...
Soon enough I will have a better answer on all of this. A BMW diesel with this high of milage, is there anything I should be doing maintenance wise going forward? The car has been rock solid. Oil/oil filter change regularly as well as air filter change/MAF cleaning every 30k (depending on how the filter looks).