Fuel pump not running right

[jpe]

I have a 01 bullitt that I can’t get the fuel pump to work right.
I have 12 volts all the way to the pump and have checked both wires from the pcm back and they work along with jumped the inertia switch but the pump won’t turn on.
Previous owner had the black and pink wire grounded and that makes the pump run but it always runs as long as the key is on.
What else can I check to get this to work like it’s supposed to?
Thanks

 

[Nightfire]

Sounds like the previous owner screwed up the system. Get a new pump

 

[jpe]

Already did and the pump works if you ground the brown/pink wire but is on all the time

 

[weendoggy]

The returnless system is controlled by the CCRM and FPDM. The CCRM powers the FPDM via the Inertia Switch and sends information to the PCM and is monitored by the FRPT (fuel rail pressure tansducer). This is all sent via hyperspacelight through the PCM to modulate the pump cycles, like a variable switch. So, you have some checking to do to find out what someone did/didn't do to the system. In your case, if it's running full force all the time, it's been tampered with.

 

[Shuttleman83]

There is a ground from ECU to fuel injectors which can cut off fuel, also, the crank sensor as well. Check both.

 

[jpe]

I just don’t know what or how I should be checking on this…I hate this design and will probably never buy another like this because of the stupidity they engineered.
I have owned 21 mustangs and this is the dumbest thing I have ever came across.
Please advise how and what to check
Thankyou

 

[Shuttleman83]

You can remove the ground and clean it, try resetting your PCM for 1-2 hours via battery cable removal, also check wiring and volts to the crank sensor. And finally, check FPDM.

 

[Shuttleman83]

Have you verified the CCRM is working 100%? There is also an underhood fuse that controls fuel pump, make sure it has 12v and

Check this link below for more info.

BULLITT Archive Template

The 2001 Ford Mustang BULLITT GT.

www.bullittarchive.com

 

[jpe]

If the crank sensor wasn’t working would it not run or have other issues?
I replaced the fpdm from another known running car and still the pump will not turn on.
Is there any way of checking the pcm to see if it is operating correctly?

 

[Shuttleman83]

IIRC the crank sensor sends signal to the injectors and or the pcm when cranking, the timing of the cams with the cam sensor is important also.

 

[jpe]

It runs fine if you ground the brown and pink wire right by the tank. I’m wondering if the pcm isn’t sending anything to the fpdm…

 

[Shuttleman83]

There is a fuel pump ground on the pcm check that out.

 

[jpe]

I cleaned the ground wires that are connected to the pcm but nothing changed…I hate ford for this dumbass idea

 

[Bullitt347]

I cleaned the ground wires that are connected to the pcm but nothing changed…I hate ford for this dumbass idea

It is only a "dumbass idea" because you do not understand it.
If you knew the reasons for why this system is used, you would appreciate why it was implemented.

 

[jpe]

So then tell me about this and why it isn’t working correctly sir

 

[Bullitt347]

Did you even check the link in post #8?
It has a very detailed diagnostic routine laid out for the 01' Bullitt Mustang.
If you follow that diagnostic routine I am sure you will find the problem.

 

[jpe]

Yes I did before I even made the first post but I have power to the pump it just won’t run unless the brown and pink wire is grounded so that didn’t help me much…
I have had 2 different fuel pumps and tanks in the car with the same result.