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need explaination about tech bulletin turbo by-pass valve...(62nd post ;)

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Old 01-02-2001, 11:28 AM
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Default need explaination about tech bulletin turbo by-pass valve...(62nd post ;)

my service mang. gave me his explanation on the tech. bulletin. he indicated that the groaning and howling description is when the valve has totally failed. i tried to explain to him that i thought the bulletin indicates warning signs that the valve is about or going to fail. who is right?

a side note; i did not have any warning signs when the g-valve went out. i had the h-valve put in and a week later the n-valve comes out. i want the n-valve put in but audi says that there has to be noticable failure for replacement. so why did they put out a bulletin...they are admitting faliure with the h-valve. i know you all say aftermarket is the way to happiness but i spent much and i should except much!!! give me the n-valve
Old 01-02-2001, 11:49 AM
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Default easy cure: stick an x-acto w/#11 blade into lower end of DV and puncture diaphram... instant failure

and its indistinguishable from a normal wear & tear rupture.
Old 01-02-2001, 11:56 AM
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so the bulletin reads for total failure?
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