Hey,
I am having an incredibly bad time with my 2004 2.0GT Liberty. Since the end of last year it has been intermittently starting and we have come to the conclusion that there is not enough power getting from the relay to the fuel pump. After testing it we found that only 3 volt is getting through. We replaced the fuel pressure regulator and tested everything else and found no problems, but I've spoken to a mechanic who told me to test the fuel pump speed controller which is in the boot on the right side.
Question is, can anyone tell me how to actually go about testing this???