NJMustangGT

I have installed a stage 2 procharger with an upgraded head unit and a 800 hp innercooler along with 60lb injectors, ht0 spark plugs and -Fore Precision Works S197 Billet Fuel Hat
-Lethal Performance Dual FPDM Kit
-Hat to Stock Fuel Line Adapter
-Ford GT Supercar Fuel Pumps (2)
-Fuel Level Sending Unit

I installed it in and the car will start up and idle for 5 seconds and then turn right off. the fuel pressure is going from 25lbs to about55lb or so then turing off, i had a shop take a look at it and they can not figure it out. please does anyone have an idea what is wron with it i need my car back. Or any one with the fuel system that i have, did you have the same problem?

Derf00

When you put the key to the 'On' position before you crank it, do you hear the fuel pump kick on?

While it does idle, is it smooth or rough?

After it shuts down can you go right back and start it up again or does it need to sit for a few minutes?

NJMustangGT

yes when i put the key to the 'On' position the pumps turn on, i can hear them.

it is a rough idle for the short amount of time that it is on

It will start up again but do the same thing

edwin108

Is your MAF sensor plugged in? Also, check for any vacuum leaks on the intake.

X3xMONGOOSEx3X

Did you happen to reflash it???

onederful100

do you have a tune for those mods?

moosestang

Uhhhh, yeah, same question. You can't simply swap to 60lb injectors with being tuned for them.

You have changed so much, that I wouldn't even know where to begin. Clearly one or all of your mods are the problem.

Try disconnecting the battery for 15 minutes if you haven't all ready. That way the long term fuel trims will reset.

U R 11 5

That kinda happened to me when i was changing between tunes and the tune half installed and did that same thing so i put the key in the ignition and turned it to run(all the way without starting) and back to where i can take it out. I did that about 10 times really quick until you can hear the door lock and unlock by its self. That resets the computer. Good luck

NJMustangGT

I brought it to a place to get it tuned and they are having trouble gettting it right with the gt pumps. anyone have a problem with this fuel system set up?

hammeron

NJMustangGt, is the shop you took it to creating a custom dyno tune for you?

if so the base file that they start with should at least get the car to idle, unless of course there is a physical problem with the fuel system, sensor, etc.