RE: Turbo say "Bye-Bye"

[Jouko Haapanen <joukoh@vtoy.fi>]

Have a look at the rod attached to the diapragm that controls the "wastegate" on the hot side.  Had a car in recently with similar problem.  Rod was flapping around like it was not attached to the dipragm at all- and it was not...

The valve on the hot side of the tubo was flapping open-shut-open-shut (prolly more open than shut) with the rod.  Check boost pressure - sholuld be getting around .45-.65 bar (peak) if I recall correctly.  This particular car was scoring in the 0.2 to 0.3 bar range.  The diaphragm is NOT supplied separately, even though it is removable.  Hence replaced complete turbo.

BTW, this particular car had lost the little locking ring at the end of the rod attaching it to the diapragm piston. A FIM 0.01 part.  No error codes on this car either - you get them for a broken solenoid valve or overboost conditions, but not for underboost.

Jouko Haapanen
Pori, Finland

-----Original Message-----
From:	Jason Palmer [SMTP:palmerj@earthlink.net]
Sent:	Thursday, October 22, 1998 1:27 AM
To:	Chris Woodward
Cc:	quattro@coimbra.ans.net
Subject:	re: Turbo say "Bye-Bye"

>My 97 A4t has been having boost problems recently, causing it to have
>less power than  it did before the TAP chip went in.  After hooking it
>up to the diagnostic computer twice, the dealership kept telling me
>that nothing was wrong.  (After all, how could there be--there are no
>error codes?!) 

Well- a fella here in town had the SAME problem... went to the shop
several times, same thing- Nothing wrong, no error codes.
Of course there was something wrong- it took a good 13 secs or so
to reach 60 in hit automatic.
Went to second shop, got a new turbo... now he uses the second shop
exclusively.

Might want to consider taking the car to the shop- and getting a loaner.
At least you wouldn't be putting miles on your car while its turboless.

Jason Palmer
97 A4 1.8Tquattro mtm w/ original turbo
88 GTi (was busted into- but not stolen... I feel your pain)