Intermittent crank no start issue

Thank you Kasekenny, this weekend I am going to scope the light blue/orange wire (pin 7) for feedback should be square wave. I would like to scope the control signal also what wire is that? Hopefully one of those will show duty cycle of pump and if the signal is a clean square wave. Again thank you and have a good weekend.

Thank you Kasekenny, will give that a shot on the scope and post it. Sorry for any confusion.

Hi Kasekenny, Had a friends scan my car with a Autel bt mk808 tool, it tested a lot including the fuel pump and reported the fuel pump as okay. I am going to send a waveform the tool gave me. I hope it is useful. Would like your opinion. Thanks.

Thanks Kasekenny, the scanner is new to us and don't know how to set the voltage scale on the photo I have of the waveform on the vertical axis scale goes from 88 to almost 120 (I know that can't be volts) I did rev it up during the scan I assume that's where you see it stepping up. Can I assume if there was bad contacts on the pump the waveform would have shown it?
From what I am reading, the fuel pump should be on during prime and crank, if that is correct what would cause the pressure to sometimes drop to zero while cranking then upon turning key off and on it primes to 30 and stays there while cranking then starts? Ghost in the machine!
Car holds pressure for over 3 hours then starts to drop off. Thank you for your input.

I cannot get it to happen, it happens randomly, sometimes the pressure won't drop at all while cranking and it will start like normal. When it drops to 0 PSI it will not start. If I cycle the key, pressure comes up to 30 PSI and it will then start. Also it holds pressure for hours. This weekend I will try to get a video of the fuel pressure gauge (if it acts up).
Thank you for your input.

Hi Danny,

I had a Kenne Bell 1.7L intercooled supercharger with a boost a pump and 36 Lb. Injectors installed around 9 years ago. It is running 9 pounds of boost. At 9 pounds of boost my fuel pressure reads 50 pounds. For whatever reason the car has always read 30 PSI at idle, on a hot day it will go up to 40 PSI regular driving out of boost. No problems until recently, here's the whole story. Tried to start car zero fuel pressure cycled key a few times pressure came up to 30 PSI car started and ran normally. Started checking grounds and connections found the connector on the fuel pump driver module had green corrosion on the pins, cleaned it really well, going further found the connector (under the rear bumper) to the fuel pump had green corrosion cleaned it. Also found a bad ground around the radiator shroud. Everything ran well for a while, thought I had it fixed. Then it happened again tried to start zero pressure no start. Got it running now I notice sometimes the pressure will drop from 30 PSI to zero while cranking, if I cycle the key it will prime to 30PSI and start. Other times it will crank and the pressure will not drop at all. (It holds pressure for hours before dropping off.) From what I read the fuel pump should be on during prime and crank, if that is correct then whatever is responsible for keeping the fuel pump running during crank is not doing it's job. Would very much appreciate your input. I am keeping this car out of boost until I get this fixed. Thank you for your input.