1990 928 GT with chronic 4 cylinder mode issue

malcolm;6468 wrote: The ABS & PSD are linked.....when was the PSD last serviced?


Its essentially a brake fluid flush using the digi pod or Theos diag system through the diag port.

You will have to explain that one to me some day Malcolm

Well the service shop agreed to a sizable credit on the service, and the Dave Roberts advised repair is still working.

I want to chase the ABS/PSD warning next. As it is bump related I am thinking of checking the wires first.