Re: 4000rpm hesistation

[Aleksander Mierzwa <alex@matrix.com.pl>]

At 20:45 22.05.98 -0400, Joan  Kotjarapoglus wrote:

>I recently had a chip and wastegate spring installed bumping the boost
>from 1.2 to 1.8 bar on my 1987 5000 turbo quattro.  It has run
>perfectly without a problem for over a month.  This past weekend 
>after accellerating briskly in first gear at an intersection, it 
>seemed or sounded like I heard soundthing odd, or it could have
>been my imagination.  What I did notice, however, was the boost
>was not getting past 1.2., and the emgome rpm seems to top out
>at 4000 then begins to have hesistation stutter like the fuel
>cutoff at the the rpm redline.  It I push it smooths out a touch 
>and get slight past 4000rpm, and maybe to 1.3 or 1.4 bar but it aint
>running right,  Friend tells me to check the intercooler hose for a
>leak?  Any other suggestions for the source of this problem while I
>have my nose underthe hood.

But your friend is most likely right. Check the turbo-to-intercooler and
intercooler-to-throttle body (aka "michelin man") hoses. Old hoses almost
always fail after increasing the boost.
Aleksander Mierzwa
Warsaw, Poland
mailto:alex@matrix.com.pl
87 Audi 5000CS turbo (mine)
88 Renault Medallion wagon (mom's)
91 mountain bike (just in case both cars broke at the same time :-)