So, I had this issue again, and you are correct. Im having a low fuel pressure issue. I took it to a professional mechanic this time, and he mentioned something about a Fuel Pump Control Module or something like that. He said its maybe located in the trunk. He was still trying to track down the part and all the exact info, but sounds like I might be in for a new fuel pump. That would explain my lean misfires when the problem occured. I googled and seems like 06+ only have the fuel pump control module. My 05 system diagram only shows the pump.

That control module is called the FPDM...Fuel Pump Driver Module. It's located in the front left corner of the trunk. FPDMs have existed since 2003, when Ford switched to a returnless fuel system.

Its purpose is to vary the duty cycle of the pump to maintain the desired fuel pressure.

Awesome. So my guy says that he has to go through Ford to get one. Every had any problems with that, and what I might be possibly looking at to get it replaced?

Replacing it is simple. I've never had to actually do it as they rarely fail, but it's plug-and-play with no programming needed.

You don't have to go through Ford to get a replacement. Dorman and other aftermarket companies have them.

So, turns out we replaced the Hi Pressure Sensor on the fuel rail and that cleared all codes and the car is running great now. The codes were all in the computer but tripping the Check Engine, which is why I never even considered replacing this sensor. I put a 21 dollar Amazon special on there and I should have known better. No more knock off electronics. Car is running like a champ now. But I may try to locate one of those modules now, before I get in a pinch. He said there is a specific Police Interceptor one that is not cataloged. So he was having a problem locating it. I'll check those you mentioned. I definitely appreciate everyone's advice.

Specific Police Interceptor FPDM? I've not heard of such.

I didn't catch the DTC that you found. It is a great idea to have a $10 code reader in the glove box to take some of the guess work and parts shotgunning out.

Bringing a semi dead thread back, but adding to what SocalSam said, FORScan Lite for Android will let you view live fuel pressure.

I think the app itself is $5.99, and it'll work with most of the cheap Bluetooth OBD2 adapters. It's not very intuitive, but there's a TON of stuff you can view, from fuel pressure to engine fan duty cycle. You can also cycle each module on the car through a test procedure (and "burp" the ABS pump to get air out of it).

Yea, so, my guy is definitely trustworthy, but I dont think he has much experience with ex-police vehicles. He called Ford to get the part information and im sure thats something they must have told him. He mentioned that he owned a panther himself, but after test driving mine, he specifically mentioned how much more spunky mine was. So, this is why I dont think he has much interceptor experience. But overall he did a good job.

I was shopping for scanners, but there were a ton of options out there and I wasnt sure which one would be too little and which one would be too much. I will definitely look into this for the future. Had I scanned it, I would have known that fuel delivery was about 10psi too low. Also, it was throwing a few codes that werent activating the check engine light, but definitely making the car run like crap.

ForSCAN has almost everything you would ever need to work on these cars and is free to download to PC.