Ford Fuel Rail Pressure Sensor Test








	Active and stationary regeneration will be disabled if a fuel pressure fault is detected. Who do you use for bench testing pumps/injectors not all places can correctly test um. fuel pressure issues 2001 SPORT TRAC 4. Sensor Location The EFP sensor is installed in the secondary fuel filter housing on the top front of the engine. Too much fuel entering a vehicle's engine is. In order to be accurate and efficient when diagnosing Ford's 6. Also known as the fuel rail sensor, the fuel tank pressure sensor is an integral part of the evaporative emissions control systems or rather EVAP. For example, during its service life, a typical fuel injector on a commercial vehicle will open and close more than a billion times, and the pressure in the fuel injection chamber can be as high as 2050 bar (29,732 psi)!. If I try to accelerate, engine sputters and loses all power. The FRP sensor is located on the fuel rail, and provides a feedback signal to indicate the fuel rail pressure to the Powertrain Control Module (PCM). The FRP sensor nominal output varies between 0. I removed the hose from the back of the intake, placed a plug on the nipple (intake manifold). For F-150 Heritage 5. Yup you guessed it  BAD ground!!!!! The pump would build 27 lbs of fuel pressure and then shut off. rail supply line from the fuel rail when removing fuel injectors. Fault is intermittent. 	A fuel pressure sensor input signal is used by the PCM to calculate the position required by the fuel metering valve to achieve the desired fuel rail pressure. The EVAP captures unburned fuel vapors from the fuel tank and reintroduces them into the fuel system. If the Fuel Rail Pressure Sensor parameter is more than the specified value within the specified time period, then reprogram the ECM. Fuel Level Input -- Indicates the nominal fuel tank liquid fill capacity as a percent of maximum. is a Fuel Rail Pressure Sensor which is on the fuel rail under. Getting a quality piece that works the way it should, helps you save a lot of money on fuel and also helps keep the engine running smoothly. We work hard to build a great website for car parts, so start perusing and see what you find. 0 V-6 engine Fuel Rail Pressure Sensor removal. The engine blew a valve seat about a month ago and we replaced the head, all four pistons, head gaskets and put a new timing belt on. Still getting P0191 Fuel Rail Pressure Sensor Circuit Range/Performance. 2L V6 equipped F150 (E150 and E250 van). Page 31 F uel s upp ly s y ste m HFCM (Horizontal Fuel Conditioning Module) • The HFCM is mounted to the frame rail on the drivers side. When this happens, the fuel rail voids and the car is difficult to start when it's been sitting for a while. How do you check the fuel pump pressure on a ford F250 gas engine?  that you can get at ford dealer or parts stores it uses test strips to check PH level to prevent cavation. On the diagram it shows the fuel pressure sensor and temp sensor built together under the intake on the fuel rail. The Fuel Rail Pressure (FRP) Sensor is a diaphragm strain gauge device. By monitoring the fuel pressure, the ECM can then adjust the fuel pump’s rotational speed and maintain. " (See "Measuring Fuel Pressure" below for more details. 		MOTORCRAFT. P0193 is a diagnostic trouble code (DTC) for "Fuel Rail Pressure Sensor Circuit High Input". This kind of adaptive fuel pressure control consists of a mechanical high pressure fuel pump with fuel metering valve, see figure 1, and a fuel rail with fuel pressure sensor. I just had the oxygen sensor and fuel pressure regulator and it still acts as if it's running out of gas and hard to start after driving a few miles. The blue spring will increase your fuel pressure from about 40 psi to around 60-65psi. Use Edge's Pressure Sensor to monitor data such as Boost PSI, Fuel Rail Pressure, Air Bag Pressure, Lift. 5 volts corresponding to 0 MPa (0 psi) gauge and 4. Replaced fuel pressure sensor today but the supplier sent the wrong one. 6L 2-valve, 4. Replace as necessary following WSM, Section 303-14. Fuel pressure must maintain or exceed 45 psi at all times, including under wide open throttle (WOT). And here is the fuel pressure reading after turning the key on and priming the system. The fuel delivery pressure switch is located at the top left of the engine in the fuel injection pump supply tube, forward of the secondary fuel filter. 5 volts, with 0. Set the multimeter to “DC voltage”. The engine blew a valve seat about a month ago and we replaced the head, all four pistons, head gaskets and put a new timing belt on. If the low oil pressure warning light comes on when they engine’s oil levels are normal and your engine is running smoothly and quietly, then you likely have a bad oil pressure sensor. Fuel Rail Pressure Sensor Quick-Fix. 	5 volts corresponding to 0 MPa (0 psi) gauge and 4. We turn off the valve in the hose, leading to the engine. Fuel pressure sensors(FPS) What is a FPS? What does it do? Your common rail Diesel Engines is fitted with a fuel pressure sensor. An essential tool for diagnosing many fuel injection problems inclding leaking or clogged injectors, fuel rail deterioration, clogged fuel filter and fuel pump malfunction. Auto Service Costs Find the prices for normal auto service activities including alignment, tuneup, timing belt replacement and more. These instruction pertain to Ford 4. Refine your search for ford fuel pressure regulator. If you have more questions and or need more help, please let me know. Neither one did what I thought it should vs applied vacuum. P0087 Fuel Rail Pressure Too Low. As you can see in photo above, this Schrader valve looks just like a tire valve stem (the one used to air up the tire). How do you check the fuel pump pressure on a ford F250 gas engine?  that you can get at ford dealer or parts stores it uses test strips to check PH level to prevent cavation. These can fail, and give you poor delivery to the engine. The FRP sensor measures the pressure difference between the fuel rail and atmospheric pressure. renault megane mk2 1. The fuel system consists of a fuel tank with a reservoir, fuel pump module, fuel supply lines, fuel filter(s), schrader/pressure test point, fuel rail, fuel injectors, and fuel pressure regulator. The electrical resistance of a strain gauge increases as pressure increases, and the resistance decreases as the pressure decreases. Tbh I've never needed to replace the fuel rail pressure sensor, just the prv and scv. 		0l tdci fuel rail pressure. Instead of controlling fuel delivery with pressurized oil, the engine uses a high-pressure fuel pump to create very high fuel pressure and store it in the two fuel rails that directly feed the injectors. We're here to help you find that perfect Fuel Rail for your Ford F-150. Allright, thanks for the reply. The high fuel pressures used in these systems also improve fuel atomization at the injector nozzle. 2L 2-valve engine. The Corvette ZR1 runs fuel pressure in the 30s until an increased demand is on the system, at which point it will ramp the fuel pressure up to 88psi in the rail. P0193 Ford Description The FRP sensor is a diaphragm strain gauge device. We work hard to build a great website for car parts, so start perusing and see what you find. " (See "Measuring Fuel Pressure" below for more details. GlowShift's Fuel Rail Pressure Gauge reads 0 to 30,000 PSI and uses the included sensor wire to connect directly to your factory rail pressure sensor wire. That cost me $200 and a lot of patience for no answers. I got a Bosch replacement from Autopartswarehouse. The sensor un-screws with an o-ring at the bottom. The 6770 Ford 6. it has a unique way of regulating fuel pressure. 	He had an ODB2 monitor plugged in. Ford has made it easy to test the fuel pump on your 4. 3L Injector "Buzz" Test The Injector "Buzz" Test can be used to look for a faulty fuel injector. CONNECT 2006 1. My check engine soon light has come on and the diagnostic read p0193. Electronic Returnless Fuel System The electronic returnless fuel system consists of a fuel tank with reservoir, the fuel pump, the fuel rail pressure (FRP) sensor, the fuel filter, the fuel supply line, the fuel rail temperature (FRT) sensor, the fuel rail, the fuel injectors, and a Schrader valve/pressure test point. The code applies to all manufacturers such as Volvo, Ford, GMC, VW, etc. Fuel Rail Pressure Sensor Circuit Range/Performance,computer see's signal from the Fuel Rail Pressure Sensor and/or its circuit is sending erratic readings, indicating a fuel pressure condition that is abnormal. You'll be monitoring parameters like pressure control valve, volume control valve and fuel rail pressure sensor. What are the common causes of code P0191 ? Depending on year, make, and model, DTC P0191 may have number of causes. I have a 2005 zx4 with a 2. So now I can't even get it to start. 1994 - 1997 model year engines feature a factory installed schrader valve test port, while a valve must be installed on later 1999 - 2003 model year 7. renault modus 1. 3L Fuel Pressure Adapters to replace the stock pressure port fittings on the filter housing to easily install the included pressure sensor. DTC P0191 is defined as Fuel Rail Pressure Sensor Range / Performance problem. The engine blew a valve seat about a month ago and we replaced the head, all four pistons, head gaskets and put a new timing belt on. I can read Ford specific PID's. A pressure gauge connected to the fuel rail, take the rail return line back to the fuel tank and pinch off a couple seconds allowing a quick check the maximum pressure the fuel pump will generate to eliminate the fuel pump as that problem. 		• The fuel rail will dictate which side the intake faces, make. NG: GO to DD9. I have never looked for it on my X, but I have worked on other engines where one can find a Shraeder (sp?) valve somewhere along the fuel rail. Sold by Shop Eddies. This will make the FRP sensor atomspheric referenced (temporary for test). What does that mean? This generic powertrain/engine diagnostic trouble code typically applies to most fuel injected engines, both gas and diesel since 2000. P0087 Fuel Rail Pressure Too Low. Solenoid; Plunger; To. The Fuel Rail Pressure (FRP) sensor is a diaphragm strain gauge device in which resistance changes with pressure. Both of these readings are needed to test the fuel pressure sensor. and fuel rail pressure into account, and is usually referred to as "delta pressure. Once you start getting boost though, the FMU will increase fuel pressure much higher. Ive done a Fuel Pressure test and at Idle it holds 50 PSI even while reeving it. Quickly test the fuel pump pressure on most injector systems with this fuel injection pump tester. I replaced the high pressure pump The filter. Tbh I've never needed to replace the fuel rail pressure sensor, just the prv and scv. Ask Your Own Ford Question. 	This thread adapter replaces the fitting in your pressure port on the fuel filter housing, allowing you to easily install your fuel pressure sensor. Fuel rail pressure (FRP) sensor only GO to D: Fuel Rail Pressure (FRP), Fuel Rail Temperature (FRT) and Fuel Rail Pressure Temperature (FRPT) Sensors STEP DD9. As you can see in photo above, this Schrader valve looks just like a tire valve stem (the one used to air up the tire). my preasure after replacement was 70. I removed the hose from the back of the intake, placed a plug on the nipple (intake manifold). JEGS has a large selection of high performance and replacement fuel injection parts to increase horsepower or just get you back on the road. 5 volts corresponding to 0 MPa (0 psi) gauge and 4. Simply attach the fuel pressure gauge to the fuel rail and turn the key on (you can start the engine if it runs) to take a fuel pressure reading. Testing fuel pressure on a Ford 6. Of course, testing a lack of fuel can be done in several ways. It should show about 2. you need to take a fuel pressure test at the fuel rail; it should probably be somewhere around 60psi (key-on). This sensor makes sure your car’s engine cylinders are getting the right amount of fuel at the right pressure. 3L ; Ford Powerstroke 6. Fuel pressure is tested via a port on the fuel filter housing. Shakes or wobbles problem. Road testing the vehicle, it stalls out on a very steep incline. 		5 volts corresponding to 0 MPa (0 psi) gauge and 4. What is a Core Charge ? A "Core Charge" is similar to the deposit you might pay for a can or bottle of soda. How to test the Fuel Rail Pressure Sensor? My 02 ford escort 2. Red if that matters. Choose top quality brands API, Bosch, Original Equipment, Standard Motor Products. The Corvette ZR1 runs fuel pressure in the 30s until an increased demand is on the system, at which point it will ramp the fuel pressure up to 88psi in the rail. In the middle of the picture you can see the fuel line going into the right side of the fuel rail. My Haynes manual says the test port is located on the left side of the fuel rail, however I've been unable to find it. The high fuel pressures used in these systems also improve fuel atomization at the injector nozzle. The diagnostic trouble code P0191 indicates an issue with the fuel rail pressure transducer sensor which is located on the top left of the engine on the fuel rail. The FRP sensor nominal output varies between 0. 6L 3-valve, unscrew the Evaporative Emission purge valve bracket and move the bracket to the side. If voltage were to fall below a calibrated limit and a calibrated amount of time during testing, the test will fail. Back to the shop I test with the Ford IDS scan tool and do a high pressure fuel test it passes step # 1 build up time, but fails step 2,3,4and 5 the drop down times all pass. MOTORCRAFT. The tester fits most systems, except for Bosch, CIS-Jetronic, and GM throttle body systems. Choose top quality brands API, Bosch, Motorcraft, Original Equipment, Standard Motor Products. Again, it is either mounted in a distribution block or in the back of one fuel rail in the later Duramax engines. The fuel delivery pressure switch is located at the top left of the engine in the fuel injection pump supply tube, forward of the secondary fuel filter. 	The FRP sensor nominal output varies between 0. It appears the diaphragm is blown. Based on my experience, this code will also set if there is no or low. Average failure mileage is 67,550 miles. A vacuum-powered fuel pressure regulator valve at one end of the fuel rail ensures that the. It was reading 1074 bar at ignition on lol. What does that mean? This generic powertrain/engine diagnostic trouble code typically applies to most fuel injected engines, both gas and diesel since 2000. 2006 Ford F-150 5. The High Pressure (Forward Delivery) system supplies pressurised fuel to the Injector Rail typically with a maximum pressure of 1600 - 2000 Bar (23520 - 28400 psi) and At Idle 300 - 400Bar (4410 - 5880 psi) The Test the pressure between the injector pump and or at the fuel rail. System Fuel Rail Adapters Leak Air Test Kit FIT For Ford 6. These instruction pertain to Ford 4. There is no test port or pulsation damper present. 9L? Besides a temperature sensor being out of calibration and lying to the computer and killing the MPG, the O2 sensor can do the same thing. it uses a sensor (FUEL RAIL PRESSURE SENSOR) with engine vacuum to limit fuel pump motor speed. The most recently reported issues are listed below. The code applies to all manufacturers such as Volvo, Ford, GMC, VW, etc. This fuel supply is regulated on the rail. The fuel pressure sensor is responsible for analyzing the pressure of the fuel that is inside the rail of the fuel pump assembly. Many thanks for the help. 		Open the hood and locate the fuel pressure regulator on one end of the fuel rail. I figure the problem is in the gas tanks fuel pump, the high pressure fuel pump, the fuel rail pressure sensor, the fuel control module or its a electrical connection issue. Solenoid; Plunger; To. I should have explained that more. driver by displaying a low fuel pressure warning in the message center, and an engine derate occurs. Inspect fuel rail pressure and temperature sensor located at top right of engine for broken or cracked vacuum port. Fuel Rail Pressure Sensor Signal Voltage Low Pull. Choose from larger fuel injectors, fuel rails, fuel injection controllers, mass air meters, bigger throttle bodies, complete fuel injection kits and more from. FRP voltage decreases as the fuel rail pressure drops and stabilizes when the fuel rail pressure reaches atmospheric pressure. my truck had low fuel pressure ie. The best part is, our Ford Escape Fuel Pressure Sensor products start from as little as $61. Thus, when a common rail system fails, it is imperative to conduct a full diagnostic check on the vehicle. Active and stationary regeneration will be disabled if a fuel pressure fault is detected. If your vehicle has a pressure sensor it should be on the fuel rail by the injectors and will have a wire plug on it. My Haynes manual says the test port is located on the left side of the fuel rail, however I've been unable to find it. 	P0193 is a diagnostic trouble code (DTC) for "Fuel Rail Pressure Sensor Circuit High Input". There is a banjo-bolt type connection near the fuel rail that you need to unbolt, and then re-assemble with the pressure tester (SST in. P0191 Fuel Rail Pressure Sensor Circuit Range/Performance; P0192 Fuel Rail Pressure Sensor Circuit Low Input; P0193 Fuel Rail Pressure Sensor Circuit High Input; P0194 Fuel Rail Pressure Sensor Circuit Intermittent; P0190 - P0194 are circuit codes. Starting with the basics, a high-pressure common rail fuel injection system (HPCR) used in the GM and Dodge heavy-duty pickups since the early 2000s is quite different from the previously used Pump- Line- Nozzle (PLN) systems (like those found on a P-Pumped Cummins for example, but not like those found on HPOP equipped Power Strokes). Engine may or may not die at that time. Found an article on it, with a few other problems: 2004 Ford Freestar: 3. 2006 Ford F-150 5. 0L Powerstroke involves the secondary fuel filter (black cap on the right). Choose top quality brands API, Bosch, Motorcraft, Original Equipment, Standard Motor Products. Choose top quality brands API, Bosch, Original Equipment, Standard Motor Products. GlowShift's Fuel Rail Pressure Gauge reads 0 to 30,000 PSI and uses the included sensor wire to connect directly to your factory rail pressure sensor wire. 1994 - 1997 model year engines feature a factory installed schrader valve test port, while a valve must be installed on later 1999 - 2003 model year 7. If I restart or kill and restart engine, it runs fine for a while. Figure 1: Mechanical high pressure fuel pump. 6L GM Duramax Fuel Pressure Adapter. 3L Ford Power Stroke Fuel Pressure Adapters Ford 6. 		For example, during its service life, a typical fuel injector on a commercial vehicle will open and close more than a billion times, and the pressure in the fuel injection chamber can be as high as 2050 bar (29,732 psi)!. The fuel leaves the module and enters the high pressure pump. Price: Alternate: No parts for vehicles in selected markets. GO to DD15. Compare the pressure as reported by the PCM to the mechanical guage. Read all about the Ford Power Stroke engine controls, how it works, and their functions in keeping your diesel engine running. the other method is to buy a kit to conect a fuel pressure tool and read the value. Of course, testing a lack of fuel can be done in several ways. By monitoring the fuel pressure, the ECM can then adjust the fuel pump's rotational speed and maintain. One is a mechanical returnless system and the other is the. Road testing the vehicle, it stalls out on a very steep incline. Fuel is supplied to the common rail at high pressure from the high pressure pump. The sensor is located on the back side of your fuel rail and communicates with the fuel control actuator (FCA) via the trucks ECM to maintain the desired pressure in the fuel rail before being sent to the injectors. What does that mean? This generic powertrain/engine diagnostic trouble code typically applies to most fuel injected engines, both gas and diesel since 2000. The MIL (malfunction indicator lamp) will be illuminated, and a DTC (diagnostic trouble code) will be set in ECM memory. 	#3 – Oil Pressure Light Turns On. 5 volts, with 0. The sensor calculates the pressure and sends t. You’ll need a pressure gauge, usually made specifically for this job, and to use it while the engine is running. Price: No parts for vehicles in selected markets. Maintaining fuel pressure in a 6. This kind of adaptive fuel pressure control consists of a mechanical high pressure fuel pump with fuel metering valve, see figure 1, and a fuel rail with fuel pressure sensor. One, U need a FORD scaner and go into somethng called PIDs(parameter identification data) You will need to chose FP sensor and read what is the presure, this method is not accurate because the sensor could be foulty. Unlike the 7. As you can see in photo above, this Schrader valve looks just like a tire valve stem (the one used to air up the tire). the other method is to buy a kit to conect a fuel pressure tool and read the value. They released the car to me today and said to not drive it more than i have to. Starting with the basics, a high-pressure common rail fuel injection system (HPCR) used in the GM and Dodge heavy-duty pickups since the early 2000s is quite different from the previously used Pump- Line- Nozzle (PLN) systems (like those found on a P-Pumped Cummins for example, but not like those found on HPOP equipped Power Strokes). 0l Powerstroke diesel engine. This product is made of high-quality materials to serve you for years to come. 		0L 87,000 miles. In this video we will be cover all the necessary testing procedures for trouble code P0452 "EVAP Pressure Sensor Signal Low/Short". Unfortunately, this didn’t mean that the high-pressure pump was definitely at fault, although still possible, but it did tell me that we had now ‘seen’ the fault, so the next job was to find out why this was occurring. The fuel rail is responsible for the delivery of fuel to the combustion chamber. Find Fuel Pressure Sensors and get Free Shipping on Orders Over $99 at Summit Racing!  Fuel Pressure Sensor, Plastic, Ford, 2. Ford fuel systems modulate the pump in an effort to maintain effective fuel pressure at 3 bar. MOTORCRAFT. We have over lots of customer reviews on Ford Fuel Pressure Regulator to help you find exactly what you need. The fuel rail pressure sensor for the Cummins 6. The FRP sensor measures the pressure difference between the fuel rail and atmospheric pressure. The FRP sensor nominal output varies between 0. Step 3: Locate the Fuel Rail Pressure Sensor. 5 volts corresponding to 0 MPa (0 psi) gauge and 4. Page 31 F uel s upp ly s y ste m HFCM (Horizontal Fuel Conditioning Module) • The HFCM is mounted to the frame rail on the drivers side. A vacuum-powered fuel pressure regulator valve at one end of the fuel rail ensures that the. The Cummins 6. Instead of controlling fuel delivery with pressurized oil, the engine uses a high-pressure fuel pump to create very high fuel pressure and store it in the two fuel rails that directly feed the injectors. 	The code P0193 is setting due to the fuel rail pressure sensor seeing the drop in pressure. P0191 - FUEL RAIL PRESSURE (FRP) SENSOR CIRCUIT PERFORMANCE Description: The comprehensive component monitor (CCM) checks the FRP for acceptable fuel pressure. The fuel pressure regulator controls the fuel pressure in your Ford’s fuel system, maintaining the proper pressure needed for your vehicle to run optimally. It's worth considering that the rail pressure sensor might be faulty & over-reading. Shakes or wobbles problem. Symptoms of a Bad Fuel Pressure Regulator A good fuel pressure indicator always regulates the level of fuel going through it at an optimum level. If the fuel pressure drops around 5 lbs. 3 IPR which in turn physically "plunges" and produces the psi — pressure. The high pressure pump delivers fuel under pressures as high as 27,500 psi or 1900 bar. At highway speed engine runs rough & bogs down. Faulty fuel pump driver module; Faulty fuel pressure sensor; Possible Solutions. Engine may or may not die at that time. It was reading 1074 bar at ignition on lol. The fuel pressure sensor is responsible for analyzing the pressure of the fuel that is inside the rail of the fuel pump assembly. DTC P0191 is defined as Fuel Rail Pressure Sensor Range / Performance problem. 6L 2-valve, 4. They believe it is Recall Related. 		Is the FRP voltage PID greater than 4. Mechanical Fuel Pump Testing Fee £45. 8 volts for all others? Yes. This can be done by an electronic diagnostic tool, but I believe that diesel specialists can physically check the fuel pressure by screwing in a gauge. 0L V6 Fuel & Air Fuel Injection Pressure Sensor. Fuel Tank Pressure Sensor Connector FORD 2010 F-150 5. For all others, GO to DD2. renault kangoo 1. 25lbs at idle. How to replace it. The fuel injection pump tester comes with flex hoses, fittings and instructions for quick reference. Fuel Pressure Sensor-Low Pressure sensor - Fuel (New) Bosch 0261230093. On the diagram it shows the fuel pressure sensor and temp sensor built together under the intake on the fuel rail. How to test the Fuel Rail Pressure Sensor? My 02 ford escort 2. This morning hit the road again and got about 300 miles before a repeat performance. 	OTC 5630 Fuel Pressure Test Kit. The manifold absolute pressure sensor (MAP sensor) is one of the sensors used in an internal combustion engine's electronic control system. spec for your truck is 30-40 psi running and 40-45 with the key on and engine off - the truck should have close to 30 at idle ( sounds like you do ) to check the regulator - snap the throttle and the fuel pressure should jump to near 40 psi - you can also unplug the vaccum line from the regulator adn then the pressure should be close to 40 psi -. But when I turn the key to run it goes to 50 and then immediately starts dropping to 0. A fuel pressure test performed at the fuel rail of a SFI sequential fuel injection engine indicates lower than specified fuel pressure. Fuel pressure in your 2005 Explorer is supplied by a high-pressure high-volume fuel pump located in the fuel tank. During engine operation, if pressure is low, the ECM turns on the amber FUEL lamp to alert the operator when the fuel filter needs servicing. High pressure pump only test. A fuel rail pressure sensor (commonly known as a fuel pressure sensor) is used in many diesel and some gasoline engines. 3L Power Stroke fuel pressure test procedures. Fuel rail pressure. P0193 FORD Meaning The FRP sensor is a diaphragm strain gauge device. 5L 2012, Fuel Rail Pressure Sensor Connector by Motorcraft®. The code applies to all manufacturers such as Volvo, Ford, GMC, VW, etc. Auto Service Costs Find the prices for normal auto service activities including alignment, tuneup, timing belt replacement and more. 		Ford service is pointing finger at my Banks kit, however, kit was installed for 2 years before errors started to occur. Common rail diesel (CRD) systems operate in a world of extremes, with almost unimaginable capabilities. Unlike the 7. Neither one did what I thought it should vs applied vacuum. I can't seem to find it. 2005 Ford explorer 4. 2l engines, mostly Mustang engines. Aftertreatment Fuel Pressure Sensor (AFP) - The variable capacitance AFP sensor monitors the pres-sure in the aftertreatment fuel system. 5 volts corresponding to 26 MPa (3771 psi) gauge. 3L ; Ford Powerstroke 6. The dealer replaced my fuel pressure sensor to repair a fluxuating idle. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. My Haynes manual says the test port is located on the left side of the fuel rail, however I've been unable to find it. The fuel pressure test port is on the fuel rail on the drivers side of the engine. That scv karl showed looks good and at that price you could buy maybe 3 for the price at Ford Prv wants to be best quality genuine/Ford. Buy a 2006 Ford F150 Fuel Pressure Sensor at discount prices. From what I have beeen able to find out it is a faulty fuel rail pressure sensor, was able to find two examples of it on a "ask the mechanic" website and both said it was a bad sensor. 	I was reading/logging Fuel Rail Pressure, no FMEM (not sure what FMEM is though) and Raw Fuel Rail Pressure Signal, no FMEM (this is the output voltage of the sensor, basically what the ECU sees and translates to a pressure). A fuel pressure sensor input signal is used by the PCM to calculate the position required by the fuel metering valve to achieve the desired fuel rail pressure. Who do you use for bench testing pumps/injectors not all places can correctly test um. 3 IPR which in turn physically "plunges" and produces the psi — pressure. 7L Power Stroke® Head Gasket Kits  AP0037 Pressure Test Kit. Help with code p0087 rail pressure too low What could have cause this code to come on I was driving goin about 55mph and the check engine light came on and also it a made sound like if it was starving for diesel( loud tapping) and one more thing the truck also has 3/4 tank of diesel so in other words it was not low on diesel. my truck had low fuel pressure ie. Using the scan tool compare the fuel rail pressure set point with the actual fuel rail pressure. That cost me $200 and a lot of patience for no answers. 5 volts corresponding to 26 MPa (3771 psi) gauge. 0: diesel engine found in 2003–2009 F-250, F-350, F-450, F-550 trucks, Excursions and Ford vans. Any auto parts store should carry them. Page 31 F uel s upp ly s y ste m HFCM (Horizontal Fuel Conditioning Module) • The HFCM is mounted to the frame rail on the drivers side. If the pressure still drops, this points to a bad fuel pump. Auto Service Costs Find the prices for normal auto service activities including alignment, tuneup, timing belt replacement and more. P0193 is a diagnostic trouble code (DTC) for "Fuel Rail Pressure Sensor Circuit High Input".