Hi,

The past two days, my car's held vacuum very very well indeed.
I have not done anything to the vacuum system. All I did was rewire the radio, speakers, and remove a weird part that I thought was useless.... (A long metal plate with a lot of holes behind the cigar lighter)

I lowered the idle, readjusted the rack damper, fixed the air filter, and that's it I think.

I was really surprised, because when I went just to check on the car yesterday the locks unlocked so quickly. The car even had enough vacuum that I could lock 'em again and open 'em all up again. (Everything including trunk and fuel filler door) - I did not start the car at all.

I was also surprised that there was no sign of water inside the car, where it leaked before... I did clean some of the drains though.

I hope it's not a coincidence. However the temperature did drop from 92F to about 39F in the past few days. Last time it decided to not work, there was the same coincidence.

I don't understand. Could one of the diaphrams just sealed itself or something? Maybe I had a valve that was stuck before?

Could the vacuum check valve contribute to this? I have also used the A/C a lot lately.....

just thought I'd share. Any thoughts would be great.

BTW, does anyone know if there's a vacuum element under each front seats in the W123C?

Have a nice day,

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2008 BMW 335i Coupe