AUDI TURBO "FUEL STARVATION"

["Renier Meyer" <RMeyer.rdi@reutech.co.za>]

Hi there guys, me again,

Another problem has just cropped up, which I thought was under 
control. My car's fuel pump stopped working completely about a month 
ago, I bought a brand new unit from the agents and fitted it with a 
replacement fuel filter.

Ever since then the car is fuel starved at high load conditions. It 
pulls well on high RPM, but when it switches to another gear, and has 
to pull hard, it goes for a while and then starts cutting back. 
The condition only improves when I ease off the throttle, but then 
obviously at much less power. 

The agents checked it out for me and found that the pump was 
delivering enough pressure. Our combined verdict was that the 
delivery was not enough. A new pump has just been fitted, and there 
is no difference in the condition. What on earth can it be?

Is it possibly the frequency valve, dirty contacts??
I am going to overhaul and check the whole system soon, I have a bit 
of time for maintenance now.

If anyone can help please let me know.

Regards, Renier Meyer
200T (89), Durban, South Africa.