[V8] Imminent Fuel Pump Failure?

[Ingo Rautenberg]

Gunter,

I really don't see a difference between the two pumps except that the revised pump from Audi is smaller and requires a revised cage. IME a noisey pump is usually due to contaminants/debris in the built-in screen of the pump rather than actual pump failure. Kind of like a clogged drinking straw. Of course, this causes the pump to work that much harder and will hasten its demise. Good luck. And try to have as little fuel in your tank as possible before changing out the pump. 

Ingo Rautenberg

-----Original Message-----
From: Gunter Lorberg <glforensic at yahoo.com>

Date: Thu, 17 Apr 2008 18:38:10 
To:V8 at audifans.com
Subject: [V8] Imminent Fuel Pump Failure?


One of my '90 V8's fuel pump just started to make substantially more noise today.  Car has about 180 000 miles on it....to the best of my knowledge pump has never been changed.  Pump was previously slightly audible.....now it is clearly audible...it is worrisome.  Performance of car seems unchanged.  The noise became noticeable at the end of a lengthy day trip totalling about 200 miles.  I changed the fuel filter several months ago.

My questions to other listers:  
- how long have I got before it fails completely?
- What are common signs of failure? 
- There seem to be two available through online suppliers....one's a Bosch....the other a Pierburg......will both work?....anyone out there have an opinion on which one is better?  Should I buy dealer supplied instead?

Thanks
Gunter
(2) 1990 Canadian V8's (automatics)
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