engine dieing at idle (fuel pump?) '91 200 20v

[Louis-Alain_Richard at computerhorizons.com]

Kneale,


I don't say that there's "squeaking" rubber. I just say that pliable 
materials (like rubber, vinyl, urethane, spongy plastics) employed to 
dampen noises do get harder over time and their noise suppression 
caracteristics get worse. I don't have any example on an Audi fuel pump 
but I do remember replacing time-hardened rubber transmission mounts on a 
Ford, and it was like fitting another drivetrain. The noise level inside 
the car was cut by half; however, the mounts themselves were stil lookin' 
fine.

Louis-Alain Richard





Kneale Brownson <knotnook at traverse.com> 
2004-07-23 11:36

To
Louis-Alain_Richard at computerhorizons.com, Brett Dikeman <brett at cloud9.net>
cc
Dave Defferding <MstrBlastr at Comcast.net>, Audifans <quattro at audifans.com>, 
quattro-bounces at audifans.com
Subject
Re: engine dieing at idle (fuel pump?) '91 200 20v






Where's the rubber in these mounts to cause squeaking?  There used to be
rubbery mountings in the 5ktq tanks.  The later models have plastic stuff
(kind of like stiff nylon).  The way they snap together, there shouldn't 
be
any rubbery rubbing. 

Marvel Mystery Oil (which claims to be an injector lubricant when added to
fuel) helped quiet down my 200q20v pump for a while.

At 10:08 AM 7/21/2004 -0400, Louis-Alain_Richard at computerhorizons.com 
wrote:
>Don't forget that the noise may come from the mounts, not the pump 
itself.
>Rubber do get harder over the years and transmit a lot more noise to the 
>body (acting as a speaker now...) even if the mounts "integrity" looks 
OK.
>
>Louis-Alain
>
>
>
>
>Brett wrote:
>
>Fuel pump buzzing has nothing to do with how long they have to live- 
>fellow listers have cars with pumps that have been practically 
>screaming, for years.  After mine failed and was replaced, it buzzed 
>slightly from day one.