So I got my car running finally and the first time letting the engine warm up, so I took it for a short drive. I killed the engine and started it back up and it started with ease. Soon after, maybe 10 seconds, the rpm's dropped and stuttered so I killed the engine. Now the car will crank but not start. It sounds like the fuel pump is not engaging. To narrow down the issue I hooked up my innova scanner tool to read the live data while cranking. The RPMS stay flat at 0 when I crank the engine and im not seeing any codes. So I replaced the CPS with a new Bosch sensor. With 0 rpm reading and turning off the fuel pump relay, I tried firing it back up and nothing changed. I'm wondering what else could cause a 0 rpm reading during crank, or if I need to take a look back at my installation and test the Ohms and seating of the new sensor I put in.

any information helps, the cars got 52k miles on it and it's an 05 srt 6. It's been sitting for awhile and it got warm for the first time in a couple months. I was on the way to get more coolant and watching the oil temps because it was running a tad bit hotter than normal due to the coolant reservoir running dry after flushing the system.