4000CS Q Oil Pressure & Right Turns

[DGenetti@aol.com]

Hi,

Here is one for the list of bizzare problems.

The car: 
1987, 4000 CS Q US-California model
Milege unknown, low oil consumption, good 
compression.

The Problem:
When turning right at slightly higher speeds 
than your typical american driver, my oil 
pressure light flashes.  It goes away 
just after the turn and even faster if I let up
on the gas.   This is not a low oil level problem 
because it happens just after oil changes too. 
4 Qts. US 10W30 standard or Mobil 1.
I can put the car into a four wheel
slide turning left and not have this problem. 

A related problem is ticking lifters or vacuum 
pump after startup (excessive amount) and ticking 
after hard acceleration.  This will go away for 
a week or two after an oil change and then 
re-appear.  It can then be controlled by oil 
additives till the next oil change.

Has anyone else seen a similar oil problem?
Could my oil pump be dying? 
As for the pressure light, I am going to hook up
a 5 bar guage and 1.8 bar switch/sender from 
a 4E. Since I will have to route my own sender 
wire I can rule out the possibility of a lose wire.
What pressure levels should I expect to see?

Thanks,
Damon