Question about 2004 Ford F150

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GEttin a code that syas fuel pump modulator offline on my 2004 f150 do i need to replace the fuel rail preuusre sensore what does this even mean?

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I assume the vehicle does not start? This part is located above the spare tire in an aluminum case and is highly prone to corrosion and cracking. Moisture ,salt and just about anything else can get inside here and corrode the circuit board inside. Lower the spare down and take a look at the box it is pretty easy to remove and inspect.If you see cracks or decayed pieces of aluminum. it is probably no longer any good

Posted on Nov 14, 2010

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Posted on Jan 02, 2017

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02 ford focus flooding so no start. I pull fuse an it will eventually start. But runs outta gas. Driver fuel module. Under seat?


Driver fuel module ???? Under the back seat ? The part your calling a driver fuel module is the fuel pump driver module ! What fuse do you pull ? If you would like help you need to go into more details . Your vehicle has electronic returnless fuel system (computer controlled ) Having the vehicle checked for DTC'S - diagnostic trouble codes could shed some light on to the problem . There is a fuel pressure sensor on the fuel injector fuel rail ,this is a input to the PCM engine computer .The PCM talks to the FPDM -fuel pump driver module to speed up or slow down the fuel pump .
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2 Answers

Where is the fuel tank pressure sensor 0n a 2000 cavalier


I have never heard of a Fuel tank pressure sensor.. The fuel pressure comes from the Fuel pump which is in the fuel tank.. The pressure is regulated (Fuel Pressure Regulator) on the fuel rail on the engine near the fuel injector/s. The code PO254 is a generic code.. could mean different things.. Does it seem to be impacting how the car is running?

May 19, 2014 | 2000 Chevrolet Cavalier

1 Answer

How to check circuit 1998 nissan frontier fuel tank tempertur sensor


I assume you mean "P0180" not "p180", which is not a valid OBD Diagnostic Test Code.

So you replaced the fuel pump module without even diagnosing this code??? WOW! That was an EXPENSIVE mistake!

You pretty much answered your own question. The wires are located between the fuel pump module (Tank Fuel Temperature "TFT" sensor), the PCM and the ground point for the sensor.

Connector pins "T" and "E" at the fuel pump module connector are the wires for the TFT sensor

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2 Answers

2007 Ford 500 Sedan showing code po191. For a couple weeks my car keeps jerking and acting like it is going to stop running, especially when I turn the a/c on. It cut off on me once and I cranked it f


See another mechanic,P0191 means fuel pressure rail circuit./performance. once this code appears there is no use in taking a fuel pressure reading, the purpose for the fuel rail sensor is for the fuel pump performance,it adjust voltage to the fuel pump as vehicle load increase it commands the ECM to give more voltage to the fuel pump,you must satisfy the fuel pressure rail sensor first,or you will do nothing but stall out.

May 01, 2012 | 2007 Ford Five Hundred Limited Sedan

1 Answer

OBD 2 gives a po193 code


The code is for the fuel rail sensor.
Check the hose if deteriorating that probably means at least fuel vapor was leaking.
Replace the sensor and that should cure your problem.

Feb 06, 2012 | 2004 Ford Explorer Sport Trac

1 Answer

How to replace the fuel temperature sensor


fuel temperature sensors are used on return-less fuel systems and are usually mounted on the fuel rail, although on some vehicles it is integrated into the fuel pump. Those mounted on the fuel rail are easily replaceable but those integrated into the fuel pump requires replacement of the entire fuel pump. If you are getting a diagnostic trouble code between P0180 and P0189 then you have a fuel temperature sensor problem which, if it is integrated into the fuel pump it will require replacement of the entire fuel pump. On return-less fuel systems the fuel temperature sensor sends fuel density data to the PCM and then with that and data from the fuel rail pressure sensor the PCM commands the fuel pump driver module to adjust voltage to the fuel pump sufficient to achieve the proper fuel pressure.

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