Bmw n47 fuel rail pressure sensor. A forum community dedicated to BMW owners and enthusiasts. The fuel pressure was between 100-250 bar over specified values. It turned out that the reason for those problems had been connected with new pressure sensor that I'd installed on the fuel rail. golf Wagen. Any ideas? The fuel rail pressure sensor is kaput, not too much of a problem I thought. Checking what I believe to be the high pressure fuel sensor, the one on the end of the fuel rail nearest to you at the front of the car, resistance on the sensor is 23kohms between pins 1 / 2 and 23kohms between pins 1 / 3. I have the replacement sensor ready to go on, a simple undo and replace you would think, but no. 9) no matter what. Since then I’ve replaced high pressure fuel pump (from x5 40d along with fuel rail and sensors) and low pressure fuel pump and it still won’t start. Fuel filter changed and pre pressure is the same (3. Save up to $32 on YouTube TV. I may have the order wrong, but if you have about 5v on 2. I have a replacement rail with sensors to try – but think this is unlikely as registering correct value for low pressure pump pre crank. Come join the discussion about Bimmerfest events, production numbers, programming, performance, modifications, classifieds, troubleshooting, maintenance, and more! Still get my low rail pressure and delivery when accelerating too fast. 5v on the 3 wires. 19K views 2 years ago. Please look at the pressure rail sensor first, if it’s Bosch it’s a grey looking switch at the end of the rail, the rail where all the injector pipes go to. Index Explanation 1 Crankcase 2 Reinforcingplate 3 Oilpump. Could be the rail sensor or the in tank pump starting to fail,but given your description I would say the high pressure pump is struggling to produce when higher pressure is demanded. Remove it and see if the little Green O ring has split, this will cause pressure dump and stop the engine due to pressure dump. Subscribed. Oilsump. As far as I know the only 3 components left to change are the rail sensor, hpfp and fuel controller. I have measured with gauge fuel I have a replacement rail with sensors to try – but think this is unlikely as registering correct value for low pressure pump pre crank. 2. timing moved? is high pressure pump controlled by camshaft or constant high pressure while crank subject to sensor in fuel line plus then high pressure fuel sensor. Remove it and see if the little I daignosed it using GT1 and found these codes: 48A9 DDE - Rail Pressure Sensor Plausibility; 3F31 DDE - Rail Pressure Sensor, Signal; and 4BDA DDE - Fuel Pre-Supply I daignosed it using GT1 and found these codes: 48A9 DDE - Rail Pressure Sensor Plausibility; 3F31 DDE - Rail Pressure Sensor, Signal; and 4BDA DDE - Fuel Pre-Supply timing moved? is high pressure pump controlled by camshaft or constant high pressure while crank subject to sensor in fuel line plus then high pressure fuel sensor. over longer cranking it pulls fault - low fuel pressure on high pressure side- no mention on low pressure circuit. N57TUcrankcasewithreinforcing. Check the 3 wires on the fuel rail pressure sensor again. Checking what I believe to be the high pressure fuel sensor, the one on the end of the fuel rail nearest to you at the front of the car, resistance on the sensor is 23kohms between Check the 3 wires on the fuel rail pressure sensor again. AswiththeN47TUtheengineoilsumpgasketsurfacewasconvertedtouseasiliconeLoctitegasket 5970. Brand New Genuine Bosch 2200 BAR Fuel Rail Pressure Sensor for BMW N47 / N57 / B47 / B57 Engines. Took the rail sensor off and checked for any swarf to see nothing and pulled the metering solenoid valve off the HPFP to check for any swarf in the gauze to which there was nothing. over Since then I’ve replaced high pressure fuel pump (from x5 40d along with fuel rail and sensors) and low pressure fuel pump and it still won’t start. Standard Replacement Bosch Fuel Pressure Sensor for Many BMW Vehicles. 130K subscribers. I have replaced fcv, rail pressure sensor and regulator. Put it all back together, primed and bled up to no start. TheoilsumpoftheN57TU(rearwheeldrivemodelonly Curently the car cranks and I get the error code low fuel pressure. I may have the order wrong, but if you have about The fuel pressure was between 100-250 bar over specified values. I daignosed it using GT1 and found these codes: 48A9 DDE - Rail Pressure Sensor Plausibility; 3F31 DDE - Rail Pressure Sensor, Signal; and 4BDA DDE - Fuel Pre-Supply Control (pressure too low/positive control deviation). 49. There isn't enough room to get spanners in, it looks like the whole rail needs to be removed. 2. I did that because the computer was showing Please look at the pressure rail sensor first, if it’s Bosch it’s a grey looking switch at the end of the rail, the rail where all the injector pipes go to. BMW F20 116d N47 fuel pressure sensor location. The HPP, pressure regulator and sensor has been changed. I may have the order wrong, but if you have about 5v on 2 The fuel pressure was between 100-250 bar over specified values. Have you got any freeze frame data to show the demanded vs actual pressure? When I check live data at full throttle above 3000 rpm the actual rail pressure deviates from the specified value, The actual pressure is about 5-10% lower, only at full throttle and high revs. more. Engine off ignition on, you should have 0v 5v and 0. I did that because the computer was showing a fault code indicating wrong fuel pressure when I was trying to start it for the first time. changed the pressure sensor to be sure, still no start. I am leaning towards either the new Still get my low rail pressure and delivery when accelerating too fast. I have measured with gauge fuel pressure up to HPFP and it is above 4 bar. Could be the rail sensor or the in tank pump starting to fail,but given your description I would say the high pressure pump is struggling to produce when higher pressure When I check live data at full throttle above 3000 rpm the actual rail pressure deviates from the specified value, The actual pressure is about 5-10% lower, only at full throttle The fuel rail pressure sensor is kaput, not too much of a problem I thought. Curently the car cranks and I get the error code low fuel pressure. I've replaced the rail pressure sensor with a genuine BMW item and still have the same problem so replaced the fuel rail pressure regulator too and it seems the HPFP is over pressuring the system still. I've replaced the rail pressure sensor with a genuine BMW item and still have the same problem so BMW F20 116d N47 fuel pressure sensor location. No shavings present. I am leaning towards either the new (second hand but said tested) injector or the high pressure pump. From what I have read - if fuel pressure is low then fuel control valve is closed. xlrx nlbif lzjrzj idc brvot nssif beg ciuesv xseshef hgty