Help. P0190 code 01 Cobra. Stalling/not starting

Stock fuel system, bolt on Cobra. Drove the car fine to where I was going about 10 miles. Ran great.
Turn it off go into a store 15 minutes later it starts and started to shutter and stalled out after a few seconds. Turned the key cranked cranked cranked nothing
Cycled the key a few times, fired up after a few seconds then stalled out. P0190 code fuel rail not getting enough pressure? Sounds like the fuel pump.
What do you guys think?

Key forward do you hear the pump prime? You can also check the valve on the pass side rail.

I don’t think FRPS failure is as common on NA cars but if pump is coming on prime it a couple times then pull the vacuum line off the frps - if it has fuel in that line it’s failed

I’d guess pump but worth checking first

DSG2003Mach1 said:

Key forward do you hear the pump prime? You can also check the valve on the pass side rail.

I don’t think FRPS failure is as common on NA cars but if pump is coming on prime it a couple times then pull the vacuum line off the frps - if it has fuel in that line it’s failed

I’d guess pump but worth checking first

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No noise when I cycle the key from the pump. I heard from someone else say it might be the pressure sensor on the driver side rail. No fuel in the vacuum line I just checked now

01ssnake said:

No noise when I cycle the key from the pump. I heard from someone else say it might be the pressure sensor on the driver side rail. No fuel in the vacuum line I just checked now

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the FRPS wont keep the fuel pump from running is my understanding. Typically if theres an issue with the FRPS it's the bladder bursting and then it just dumps fuel.

Key forward you should be able to hear the pump if you're listening for it.

Silent back there even put my phone under the tank with camera on. I guess the pump must be dead

Don’t rule out the electrical side of the frps, it could be bad preventing the car from starting.


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BlackStang00 said:

Don’t rule out the electrical side of the frps, it could be bad preventing the car from starting.


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Any real way to diagnose that ?

01ssnake said:

Any real way to diagnose that ?

Click to expand...

I would try and datalog it and go from there

I've read alot of stories on po190. Same story. Stopped to get gas or what not, Than problem.

Some times the plugs get fouled,, or flooded.
And restarting may take more than normal cranks to fire back ..

Fuel filter clogged,
Fuse
Fuel shut off switch triggered
(HAD THIS HAPPEN MORE THAN ONCE)


Weather getting cold always brings out problems

I couldn’t find a way to test it. Like he said try a datalog.


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Voltmeter at the trip switch located in the trunk for voltage. You can also go to the plug under the car that goes between the pumps and the trunk access. its hooked onto a metal rail near the middle of the car. unplug and see if you have voltage at that. There are two wires for the fuel tank sender and a positive and negative for the fuel pump. Pretty sure I looked up the color wires online last time. Just ground the voltmeter to the chassis and probe the hot lead