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HI ALL

NEW ON THIS SITE
IV HAD MY CAR FOR AROUND 2 YEARS NOW, NEVER SKIPPED A BEAT BUT LAST WEEK ONCE I TOOK TO MRC TO GET REMAP DONE ON IT, THEY FOUND MAJOR VACCUM LEAK FROM THE SOLENOID VALVE UNDER THE AIRBOX CONTROLLING THE FLAP.

I TOOK THE BOX APART YESTERDAY TO CHANGE THE VALVE AS AUDI WANTED £260 LOL TO RECTIFY,
I REMOVED THE TWO VACCUM HOSES FROM THE VALVE ONE LEADING TO THE AIRBOX FLAP AND THE OTHER COMING FROM THE MANIFOLD FLAPS, NOW I CAN NOT REMEMBER WHICH GOES WHERE ANY HELP WOULD BE NEEDED PEOPLE. THE VALVE HAS 1 INPUT AND 1 OUTPUT, ONE IS SITTUATED IN REALTION TO VALVE HORIZONTAL AND THE OTHER IS VERTICLE.

HOPE THIS HELPS.

CHEERS

ZED

Hi

I had the exact same problem and the leak was being caused by a crack in the solenoid. Does your car exhaust flaps rattle for a short period when you start engine from cold? Your car will be a different machine once it's fixed.

As far as I can remember it doesn't matter which goes where as a vacuum is a vacuum - its there to power the action of the switch moving the flap once the signal comes from the ECU to operate it. I could absolutely stand to be corrected here as I'm not 100% on this! But I think once there's vacuum in the system then it's ok.

Hi mate yeah the exhaust use to rattle loads on start up, I got the old valve out and even thou it was plastic it had cracked at the bottom an where there is moisture in the vacuum system it was old rusty residue spilling out, but of a crappy place to put the valve, was thinking of relocation it but then i thought Nah forget that!