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Join Date: Apr 2015
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Thanks for the encouragement - I have mostly done the board maintenance and am really glad I did.
Removing the solenoids was not too bad as I followed the advice on levering with a screwdriver on a neighboring solenoid and the lower slot on the solenoid being loosened.
Removed the filters - almost nothing left of them. I cleaned the solenoids using QD Electronic cleaner and compressed air and am getting good strong clicks now. I re-flowed the solder joints and spotted what I think might have been a dry joint (?). I added a bit of copper wire between the two terminals I was joining. Anyway, they are almost ready to reinstall! In case someone wants to do this too, I measured the resistance across each solenoid and found between 3.6 and 3.8 ohms. I was really double checking that I had not bridged any of the gaps between terminal pairs.
I guess that the bottom line is that despite looking pretty minty (with just the covers removed) and no vanos errors, its still advisable to do this maintenance. And not too difficult :-)
2001 BMW M5
2004 911 C4S
Last edited by michaeldch; 20th May 2017 at 06:01 AM.