'95 E320 lost fuel pressure, pumps okay and new OVP relay..

[puzzler]

So there is amazing depth of information here! The diagnostic summaries contain a wealth of information and Ive read thoroughly! Thanks especially to the experts giving specific information.

Now I found a lovely, neglected wagon and tuned it up, cleaned out the mouse nests and installed a heater fan and fan control module, got the AC properly charged and working and then reuilt the cylinder head - head gasket replacement..And have a wonderfully running trip car, doesnt leak a drop of oil or water.... I love it..But suddenly the car gave a no start problem although it cranked freely and would fire with starter fluid..At first it began a start/die pattern and would not run..It would start-run for a minute if allowed to sit, then it would not restart for half an hour but later it would run a minute again..Finally I began pulling the fuel system apart and seemed to find rust and clogs in the check valves (replaced the fuel filter) and ordered a new pump. But I could find nothing wrong with either fuel pump and when I put the system back together the issue resolved. Then it failed to start and before the tow could arrive, it did start and ran fine again several days. Now it has no fuel pressure although the OVP has been replaced and I jumped the FP relay to test for a faulty relay and there is power to the relay, but the fuel pumps do not respond..

So am I looking at a bad ECU? Im thinking the engine computer senses the inputs that turn off the fuel pumps due to the crank position sensor and other inputs..turning them off even when the relay closes the circuit And my CPS is okay because I have spark..it runs. and the pumps are good..This isnt a simple one..But the car is worth fixing!

So I see most of these troubleshooting threads dissapear at this point and none ever come to identify fault with the ECU..Now this is an ASR car which has wheel speed sensors and it works great..Ive checked the engine temp sensors and theyre good.. Everything I can think of..Car has a 2005 electronic throttle and new delphi wiring harness..The usual issues, fuses and so on are all okay.

Actually I got the electric cooling fans working and then fuse D began melting out the fuse box and I find this is common so I made a blade fuse holder and soldiered it into the spot which cured the issue and now the fans run well with no overheating of the connections..ON/Off frequently with the a/c system activation..

Thanks anyone and everyone for your thoughts..