Re: Low boost problems -- at wits end -- HELP!

[quk@isham-research.demon.co.uk (Phil Payne)]

In message <199907080155.VAA04933@euler.adams.com> Gisli Ottarsson writes:

> I would really appreciate any feedback.  What did I miss?  Where did
> I over-interpret?  What next?

a) A more energetic and longer run to check for codes being stored.  The
   factory recommendation is to make at least one run from 35mph until
   the fuel pump cuts at redline.  When you stop and pull the codes,
   check that the "rev limit exceeded" code has been stored.

b) Attach an external boost gauge and check the dashboard instrument -
   it's notoriously fickle.

c) Undo the six nuts holding the wastegate cap on (beware of pretty
   powerful spring underneath) and see how far the cap rises when the
   spring relaxes.  It should be 24mm between metal (ignoring the
   diaphragm).

d) The inlet air temperature sensor is a little high at 500+ ohms.
   490 is much better.  The car is quite sensitive to this.

--
 Phil Payne
 UK Audi quattro Owners Club
 Phone: 0385 302803   Fax: 0870 0883933