Best way to test N75

[gmac78]

Hi guys

I have a problem with my homefried 3B which started after leaving it lying for a couple of months. Now only getting 0.4bar mechanical boost where before i was getting 1.3bar no problem.

I have reset ECU and disconnected MFTS with no difference to boost level.
All hoses checked, no leaks present.
Wastegate diaphram checked with no damage found.
I am getting 13 or so volts @ N75 plug but not sure if i should be hearing it clicking when the car is idling? I have tried reving the engine and listening/feeling N75 but no obvious noise/clicking is apparent.

I read somewhere that you have to blip the engine to WOT in order to hear N75 functioning, is this correct or should i hear it working at lower revs?

If the N75 is at fault where would be the best place to purchase one from?

Look forward to hearing from you all?

Thanks and Regards

Gordon

[sjw185]

Pull the fault codes, I had a fuse blown to my wgfv on my 3b.
There is tests on the following link to get the wgfv to click but not sure if it works on a 3b?

http://www.sjmautotechnik.com/trouble_shooting/ecuf20v.html#outs4

[sjw185]

good info

http://www.s2-audi.co.uk/tech_articles/motronic/wgfv.htm

[Audi-Porsche Avant RS2]

Hello, on ABY and ADU I can hear N75 turn on only in WOT with the car park.
Bye

Alessio