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DTC P0191 on 2004 Ford Econoline, keeps setting on accelleration, even after change of fuel filter and fuel rail pressure sensor

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6ya6ya
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Posted on Jan 02, 2017

REDOIL
  • 355 Answers

SOURCE: 1998 ford winstar 3 litre keeps stalling new fuel

WELL THIS VAN HAS MANY ISUSES NEED TO JECK FOR VACUME LEAK AT IN TAKE AND THE PLENUM IF ITS PLASTICK THEY TEN TO CRACK OR THEY HAVE GASKET FAILER VERY COMEN ON THIS CAR OR YOU MAY NEED TO CHECK EGR VALVE IF STUCK OPEN IT WONT IDLE THEN YOU HAVE THE IAC VALVE IDLE AIR CONTROL VALVE YOU CAN USE BRAKE CLEAN AROUND IN TAKE BUT BE VERY CARFULL FLAMIBAL SHOULD HAVE FIRE EXTINGSHER NEAR YOOU WHEN DOING THIS

Posted on Aug 19, 2009

Testimonial: "thanks turned out to be the air flow sencer on the breather so thanks to you i located and fixed the problem"

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SOURCE: Uninstalling and installing fuel filter

Fuel line tool. Can be found at any auto parts store. There are muptiaple sizes, so if you get a single one, make sure it's for your vechile. However, most tools come with all proper sizes. Once you have the tool, you slip it on the line, with the long end, you'll see what i mean, towards the filter. Push in and twist, while doing so pull line and filter away from each other. Line should pop right out. There might be some metal clips on the filter and line to keep them connected as a precaution. Those have to be removed to get the tool in proper area. A little note for you, I've worked in auto shops and I hate chaning the ford fuel filters. They are a pain in the but. Plain and simple. See, dirt can get up in where the tool goes making it harder to get line apart. Do you plan on keeping your vechile for a while? If not, is it worth paying for the tool just for this one use? I'm just saying think it over.

Posted on Sep 25, 2008

emissionwiz
  • 75197 Answers

SOURCE: where is the speed sensor on a 1995 Ford econoline van

the sensor is located on the driver side of the transmission case

Posted on Jun 19, 2009

kevstu28
  • 17 Answers

SOURCE: Fuel rail pressure sensor chkt high input p0193

Mine is on too (MIL, with p0193), 2005 freestar. My dealer can't figure it out for some reason? So I went out and bought a code reader, will fix it myself!
Anyways it can be the fuel pressure sensor (approx $100 for part), the fuel pump, or regulator on the fuel line, not too sure what they are worth, and time for labour? I am currently looking for a test gauge to check the pressure in the fuel line to see if it is pump or regulator or sensor. Hopefully your service guys can run a few similar tests and determine what needs to go.

Posted on Feb 21, 2010

  • 5 Answers

SOURCE: 1998 ford mustang 3.8 v6 starting problems.

it's your upper intake manifold gasket. it has a crack in it and needs to be replaced. your getting to much air and not enough gas. mine did the same thing.

Posted on Apr 06, 2010

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I have 2008 GMC sierra 5.3 L with a new fuel pump. And no power to the pump. Any ideas where to look?


Fuel Pump Flow Control Module (FPCM) - LMF
The fuel pump flow control module (FPCM) is a serviceable GMLAN module. The FPCM receives the desired fuel pressure message from the engine control module (ECM) and controls the fuel pump located within the fuel tank to achieve the desired fuel pressure. The FPCM sends a 25 KHZ PWM signal to the fuel pump, and pump speed is changed by varying the duty cycle of this signal. Maximum current supplied to the fuel pump is 15 amps. A liquid fuel pressure sensor provides fuel pressure feedback to the FPCM.
Electronic Returnless Fuel System (ERFS) - LMF
The electronic returnless fuel system is a microprocessor controlled fuel delivery system which transports fuel from the tank to the fuel rails. It functions as an electronic replacement for a traditional, mechanical fuel pressure regulator. A pressure vent valve within the fuel tank provides an added measure of fuel pump flow control module (FPCM). Desired fuel pressure is commanded by the engine control module (ECM), and transmitted to the FPCM via a GMLAN serial data message. A liquid fuel pressure sensor provides the feedback the FPCM requires for Closed Loop fuel pressure control.

Fuel Pump Flow Control Module (Gas except LU3/LMG/LY6/LC9)
Mounted to the rear frame, near the spare tire mount
Wheels/Vehicle Underbody Component Views
Component Connector End Views
Fuel Pump Relay - Secondary (Gas with LY6)
On the fuse block - underhood bracket

DTC P0191: Fuel Rail Pressure (FRP) Sensor Performance
DTC P0192: Fuel Rail Pressure (FRP) Sensor Circuit Low Voltage
DTC P0193: Fuel Rail Pressure (FRP) Sensor Circuit High Voltage
DTC P0230: Fuel Pump Relay Control Circuit
The engine control module (ECM) sends the fuel enable signal to the fuel pump control module (FPCM). The control module monitors the voltage on the fuel pump relay control circuit. If the control module detects an incorrect voltage on the fuel pump relay control circuit, a fuel pump relay control DTC sets.
The control module monitors the voltage on the fuel pump relay control circuit. If the control module detects an incorrect voltage on the fuel pump relay control circuit, a fuel pump relay control DTC sets.
DTC P0231: Fuel Pump Control Circuit Low Voltage
DTC P0232: Fuel Pump Control Circuit High Voltage
DTC P023F: Fuel Pump Control Circuit
DTC P025A: Fuel Pump Control Module Enable Circuit

Your best bet , take it to a qualified repair shop , dealer .

Mar 25, 2017 | GMC Cars & Trucks

1 Answer

Fuel control module 2008 escalade and the fuel pump quit working.if I run a hot wire to it it will run but as soon as I remove the hot wire it quits


Ran a hot wire to what fuel pump or the control module ? Which of these is yours ?
Figure 9: Fuel Controls - Fuel Pump Controls (LY6)
Figure 10: Fuel Pump Flow Control Module (Except LY6) Does yours have fuel pump flow control module under the vehicle Fuel Pump Flow Control Module (except LY6)
Mounted to the left side of the frame assembly below the driver seat ?
Fuel Pump Flow Control Module (FPCM) - LMF
The fuel pump flow control module (FPCM) is a serviceable GMLAN module. The FPCM receives the desired fuel pressure message from the engine control module (ECM) and controls the fuel pump located within the fuel tank to achieve the desired fuel pressure. The FPCM sends a 25 KHZ PWM signal to the fuel pump, and pump speed is changed by varying the duty cycle of this signal. Maximum current supplied to the fuel pump is 15 amps. A liquid fuel pressure sensor provides fuel pressure feedback to the FPCM.
Electronic Returnless Fuel System (ERFS) - LMF
The electronic returnless fuel system is a microprocessor controlled fuel delivery system which transports fuel from the tank to the fuel rails. It functions as an electronic replacement for a traditional, mechanical fuel pressure regulator. A pressure vent valve within the fuel tank provides an added measure of fuel pump flow control module (FPCM). Desired fuel pressure is commanded by the engine control module (ECM), and transmitted to the FPCM via a GMLAN serial data message. A liquid fuel pressure sensor provides the feedback the FPCM requires for Closed Loop fuel pressure control.
If your vehicle has this system check it for DTC'S - diagnostic trouble codes . Will take guess work out of it .
DTC P0191: Fuel Rail Pressure (FRP) Sensor Performance
DTC P0192: Fuel Rail Pressure (FRP) Sensor Circuit Low Voltage
DTC P0193: Fuel Rail Pressure (FRP) Sensor Circuit High Voltage
DTC P0230: Fuel Pump Relay Control Circuit
DTC P0231: Fuel Pump Control Circuit Low Voltage
DTC P0232: Fuel Pump Control Circuit High Voltage
DTC P023F: Fuel Pump Control Circuit
The engine control module (ECM) supplies voltage to the fuel pump flow control module (FPCM) when the ECM detects that the ignition is on. The voltage from the ECM to the FPCM remains active for 2 seconds, unless the engine is in crank or run. While this voltage is being received, the FPCM supplies a varying voltage to the fuel tank pump module in order to maintain the desired fuel rail pressure.
DTC P025A: Fuel Pump Control Module Enable Circuit .
Ford Electronic Returnless Fuel System Diagnosis Part 1 this for ford but the GM system works the same . You'll need a wiring diagram so you know what wires are what . Free wiring diagrams http://www.bbbind.com/free_tsb.html

Oct 31, 2016 | Cars & Trucks

1 Answer

What are the possible causes for DTC P0191?


it is often the fuel pump, but can be fuel rail pressure sensor, a clogged fuel system. I would check fuel pressure at rail, if low I would remove fuel filter check and see if fuel is dirty and if filter can be blown through with very little resistance... almost like blowing through a straw, if it requires any pressure to blow through the filter.. the filter is clogged. the fuel rail pressure sensor has two bolts, an electrical plugin and I believe one vacuum line. I am going to get a picture of the sensor and post here and will see if I can get a picture of one on the engine
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if I can offer any other assistance, please feel free to leave a comment! I would like to help you resolve your problem!

Sep 28, 2015 | 2002 Mercury Sable

1 Answer

08 Chevy Kodiak c4500 duramax desiel i replaced the MAF sensor because the code reader said P0102 now it says P0087 that is the problem but everytime I'm hauling something the engine always decreases its...


DTC P0087: Fuel Rail Pressure (FRP) Too Low

Circuit/System Description
The fuel injection pump supplies high pressure fuel to the fuel injection rails, and then to the fuel injectors through high pressure pipes. The fuel rail pressure (FRP) sensor is a three wire sensor mounted in the right fuel injection rail. The FRP sensor uses a 5-volt reference circuit , a signal circuit, and a low reference circuit to monitor fuel rail pressure. This information is sent to the engine control module (ECM) to assist in the fueling of the engine.

Fuel Pressure Regulator Solenoid Supply Voltage
P0088, P0090
P0088
P0090
P0087, P0191, P2510
Conditions for Setting the DTC
P0087
• The actual FRP is more than 15 MPa (2,176 psi) below the desired FRP.
OR
• The actual FRP is less than 22.5 MPa (3,263 psi).

Action Taken When the DTC Sets
• DTCs P0087 and P0088 are Type A DTCs.
• The ECM commands the engine to operate in the Reduced Engine Power mode.
• The message center displays Reduced Engine Power.

Important: Because of the cleansing properties of the biodiesel, switching from the straight diesel to a biodiesel blend can prematurely restrict the fuel filter with normal deposits in the fuel system. A fuel filter replacement might be required sooner than the recommended interval.
P0087
If DTC P0090, P0168 or P0191 is also set, refer to Diagnostic Trouble Code (DTC) List - Vehicle.
Ignition ON for 90 seconds, verify the scan tool FRP Regulator Command parameter is less than 20 percent.
? If greater than the specified range, replace the ECM.
Attempt to start the engine.
? If the engine does not start, refer to Engine Cranks But Does Not Run.
Install the CH-48027 to the fuel rail service port and slowly increase the engine speed until reaching wide open throttle (WOT). The value should be between 1-4 inches Hg vacuum.
? If more than the specified value, inspect for restricted fuel filter or damaged supply lines.
? If no restriction was found, test for high fuel return flow. Refer to Fuel System Diagnosis - High Pressure Side.
With the engine idling or at an idle, command the fuel pressure control to 180 MPa (26,106 psi) with a scan tool. Observe the Actual Fuel Rail Pressure parameter. The actual fuel pressure should be the same as the commanded pressure.
? If the Actual Fuel Rail Pressure is less than 165 MPa (23,931 psi), refer to Fuel System Diagnosis - High Pressure Side.
Important: If the fuel temperature is near 121°C (250°F) during the duplication of the complaint, or in the Failure Records for this DTC, inspect for a restriction in the fuel cooler air flow or the fuel heater always ON. Refer to Fuel Heater Always On.
Operate the vehicle within the conditions for which the customer complaint occurs while observing the CH-48027 . You may also operate the vehicle within the conditions that you observed in the Freeze Frame/Failure Records.
? If the vacuum was more than 12 inches Hg of vacuum at any time in the operating range, inspect for kinked or restricted fuel supply lines.
Operate the vehicle within the conditions for which the customer complaint occurred. Observe the Actual fuel Rail Pressure and Desired Fuel rail Pressure parameters with a scan tool. Fuel pressures should be the same for both parameters.
? If the Actual Fuel Rail Pressure is less than the Desired Fuel Rail Pressure, refer to Fuel System Diagnosis - High Pressure Side.
? If fuel system tests normal, refer to Diagnostic Aids.

Aug 20, 2017 | Cars & Trucks

1 Answer

Where is fuel rail pressure sensor located 2005 ford focus


Before you change your fuel pump or fuel rail pressure or the sensors there are five things you will have to check first....first the inertia switch second if you have had the fuel filter change third the fuses fourth the sensors if they are bad or have been wet and the fifth the fuel pump pressure...

Dec 10, 2013 | 2005 Ford Focus

1 Answer

Question about a P0191 DTC on a 2004 Ford Explorer XLT


What repairs can fix the P0191 code?

  • Replacing fuel filter(s) or fuel pump
  • Replacing the fuel pressure regulator
  • Repairing any broken, frayed, or shorted wires that lead to the fuel pressure sensor
  • Repairing corroded connector to the fuel pressure sensor
  • Replacing fuel pressure sensor
  • Repairing any vacuum leaks in the engine

    Many times this error will also occur if there already exists fuel/air problems, like your previous code 2106 means there are one or more components in your car's intake/exhaus/air/injection systems that is having serious problems

Mar 06, 2017 | Ford Explorer Cars & Trucks

1 Answer

Hi. I have a 2003 Ford Focus LX. A few weeks ago, I was driving back to Florida from South Carolina. About six hours into the drive, my car stopped accelerating. I would push down on the gas pedal and...


Diagnostic Test code (DTC) P0191 has a generic description which reads "Fuel Rail Pressure (FRP)Sensor Circuit Performance"

This code sets when the Powertrain Control Module (PCM) is monitoring the fuel rail pressure sensor signal under certain driving conditions. The FRP sensor varies return voltage to the PCM to indicate the fuel pressure at the fuel rail on the engine. DTC P0191 sets when the voltage received from the FRP is above or below the expected "range" or "threshold".

The possible causes of this code are:

> High fuel pressure
> Low fuel pressure
> Damaged Fuel Rail Pressure Sensor (FRP)
> Excessive resistance in FRP circuits.
> Low or no fuel

With all of that said, I would recommend that if you have more than 30,000 miles on your current fuel filter, I would try that FIRST. Replace the filter and clear the code. If the code returns, then diagnostics will need to be performed to find the actual cause.

Aug 11, 2011 | 2002 Ford Taurus

1 Answer

How do I fix code P1237 on ford taurus sel


P1237 - Fuel Pump Secondary Circuit Malfunction

Electronic Returnless Fuel Systems (ERFS) utilize a Fuel Pump Driver Module (FPDM) to control fuel pressure. The PCM uses a Fuel Rail Pressure Sensor (FRP) for feedback. The PCM outputs a duty cycle to the FPDM to maintain the desired fuel rail pressure. During normal operation, the PCM will output a FP duty cycle from 5% to 51%. The FPDM will run the fuel pump at twice this duty cycle, e.g. if the PCM outputs a 42% duty cycle, the FPDM will run the fuel pump at 84%. If the PCM outputs a 75% duty cycle, the FPDM will turn off the fuel pump.

If the FPDM does not out any diagnostic signal, (0 or 100% duty cycle), the PCM sets a P1233 DTC. This DTC is set if the FPDM loses power. This can also occur if the Inertia Fuel Switch is tripped.

If the FPDM outputs a 25% duty cycle, it means that the fuel pump control duty cycle is out of range. This may occurs if the FPDM does not receive a valid control duty cycle signal from the PCM. The FPDM will default to 100% duty cycle on the fuel pump control output. The PCM sets a P1235 DTC.

If the FPDM outputs a 75% duty cycle, it means that the FPDM has detected an open or short on the fuel pump control circuit. The PCM sets a P1237 DTC.


Keep us updated.

Feb 28, 2011 | 2000 Ford Taurus

4 Answers

2008 Ford F250 6.4 turbo diesel, have 3 DTC codes


P0087- low pressure fuel system. Fuel pressur valve stock open, Fuel volume control valve stuck close, Leaking fuel injector,P0088- fuel pressure contorl valve stuck close, Fuel rail pressure sensor P2291-all @ at the above, means to say poor fuel quality

Jun 21, 2010 | 2008 Ford F 250 Super Duty 4WD

2 Answers

Fuel pump location 1988 ford econoline


Theres 2 pumps one in the tank, lift pump, and one in the chassis rail under the driver side. The one in the tank is cheap, the one in the rail is not. The one in the tank only produces low pressure to prime the main pump and if it is broken, may not cause that much of an issue except when starting. the one in the rail is a no-start if it fails. The idea is that the rail pump can supply high pressure for the injectors, so a fuel pressure test at the injector rail will determine which pump is playing up. Hope that helps Tim

May 26, 2010 | 1988 Ford Econoline

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