still having problems with the 8v

[irisheet@yahoo.com (breandan mcilwain)]

well i have been working on this 8v gti for a week
now, and i still havent fully figured out what the
problem is.
things that i have replaced
internal fuel pump
plugs
wires
distributer
cap and rotor
fuel filter
all of the vacuum lines
air filter

reset the timing
gutted all of the borken stuff out of the cat

now the problem that i am having is under load the car
will buck wildly and jerk in all gears, i hooked up an
air/fuel meter to see what the system was doing and
this is what i can see.  when the jerking starts and
motor will slam extremely lean and then back to rich
over and over again, so something is telling the fuel
system to turn off and on wildly  will a vacuum leak
at the injectors cause this fault?  or maybe a bad
injector? i know that the 02 sensor is in good
condition, along with the dpr, both of them were
tested, and i also tested the thermo-time switch.  all
sensors tested out in great shape!  could the fuel
pump relay be faulty at certain rpm ranges?  not sure
on this problem, it is really stumping me at this
point.

could some of the 8v experts help out on this one?
thanks in advance
breandan l mcilwain 




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