2012 duramax fuel pressure

2012 duramax fuel pressure. Remove the two bolts on the glow plug modules heat shield. There is an obvious power loss felt in the acceleration as well. 6 Duramax. In terms of LLY injector problems, GM had sorted out the internal failures with the 2004 ½ redesign, but the LLY Duramax would occasionally exhibit a trouble code for the injectors, but in most cases it turned out to be an issue with the injector harness rubbing through and causing a short or open in the wiring. CP4 Failure. The high pressure fuel is supplied to the fuel injectors (1) through separate high pressure pipes. Details. 6L LB7 Feb 1, 2011 · Remove the fuel feed pipes from any injectors that have high return fuel flow, and install the EN 47589 Fuel Pressure Test Adapter Cap (s) to the fuel rail outlets. I have been messing with on my off time . Short version: Engine cranks but will not start. Learn more. I’m running 2 Isspro fuel pressure gauges viewing in my cab. The fuel rail pressure is the injector pressure and can be 5k up to 23k. The weird thing is during the winter and Aug 12, 2019 · How to swap out your Duramax diesel Fuel Pressure Regulator. S&B Intake, PCV Reroute, Resonator Delete. I went out to prime it and got it started. 5 box. Jun 25, 2022 · 6. #1 · Apr 22, 2022. Item #: 12670466. Find an Edge insight and try reading it from the OBD-2 port. This is why lift pumps are installed to help suck fuel from the tank and push it to the cp3 keeping positive pressure at the cp3 so Sep 12, 2008 · P0087 sets when the computer can not raise the fuel pressure up to the desired pressure. The test lamp should illuminate. 3) Balance rates on your injectors. Fuel lines were replace 60k miles ago and Injectors were replaced probably 50k miles ago. One of my batteries was bad, causing the truck to over charge at 15. Parts and Labor total, $11,400. #18 · Jan 23, 2016. 101 posts · Joined 2012. #3. Desired vs. 5 box, 2018 L5P Sierra 4x4 SB, 2011 LML Sierra 4x4 CCSB 11-16 LML 6. Unlike the ultra-durable CP3 that came before it, the CP4. Daily/Tow Rig - 2006 LLZ 2500HD Crew Cab Short Bed . There are about 4 Ford 6. Since it's a sensor, the code might clear on it's own, not sure. The system was loaded up with air so I made up an auxiliary tank to the inlet of the filter housing, primer pumps hard after 4-5 pushes. Part#E05 10505. Apr 22, 2022 · 4 posts · Joined 2022. Don't see what you're looking for? Call us at 715-254-1833, email us, or use our live chat option! We specialize in finding hard to find, obscure parts. Description: Silverado, Sierra 2500 HD. JoshH said: I believe there is a table in the LB7 and LLY tunes that sets the voltage to pressure of the rail pressure sensor. after 10 seconds it started to surge in idle and fell on its face and died. 3 kpsi. The injectors need around 2500 to fire. Cracking a fuel line loose on a running Duramax engine could easily be fatal. Apr 9, 2022 · Check engine light comes on and have loud injectors. Services both banks and includes regulated return valve. 6L LML Duramax Mar 17, 2022 · CP4 High Pressure Fuel Pump Failure. Aug 18, 2012 · 6055 posts · Joined 2010. SKU: 12639000 - 9D. com) 2023 LZO Sierra 4x4 crew 6. Fuel May 4, 2021 · M. The valve is designed to release pressure when it exceeds the maximum pounds per inch Sep 7, 2021 · L5P P0191 Code & Fuel Pressure Sensor Replacement. the predecessor CP3 found on LB7, LLY, LBZ and LMM engines). 6L LML Duramax diesel engine. Fitment: LB7, LLY, LBZ, LMM, LML (2001-2016) Related O-Ring: 94011618. Dec 20, 2015 · 1) Low pressure regulator (say 5-7 psi) and pressurise the fuel tank while looking at all the fuel lines under the truck and around the motor. Jul 4, 2013 · 787 posts · Joined 2011. Nov 2, 2018 · Yep, Merchant Auto has a bleeder screw adapter where you can ad a fuel psi elect solenoid or even a hard line for manual gauge, I wouldn’t do that. Exergy Upgraded Fuel Pressure Regulator (LML) "The Fuel System Saver!" Fits 2011-2016 LML Duramax. driving, to a max of 26k. Took to dealer, scan tool connects, but can't look at fuel pressure data, crashes when trying to look at rail pressure. Apr 1, 2020 · Buy Fuel Pressure Sensor for 6. He just recently changed the fuel filter thinking that was the problem. the lift pump took care of losing prime and no more p0087 codes. Jul 21, 2023 · A Look at the Fuel System on a 6. 5 to 2005. 2 Pump) Before condemning the pump for a starting issue you need to be certain that the high pressure fuel system is not leaking the pressure. Jan 28, 2012 · High pressure fuel pump failure. “Tell me and I forget, teach me and I may remember, involve me and I learn. When pump blew it went all at once with no warning and was running great prior. Jan 18, 2013 · fixes, replace fuel line, replace filter, or add a lift pump and that will fix the problem. I bought a used 2018 2500HD Duramax L5P and a week after owning got a reduced engine power warning and got it scanned and received the P0191 code and took it back to the dealership to address. Jul 19, 2012 · 37. 3) Unplug the fuel pressure regulator 2 (pressure control valve in left hand rail) electrical connector. Leave the Schraeder valve alone for now, just pump the primer button until it gets hard, then loosen the bleeder screw a little. Deviant EGR Delete with Up Pipe. 1. After that, run the test using a manual pressure gauge to confirm the sensor provides the correct data to the ECM. Jan 1, 2013 · Update: Got the problem fixed. Nov 24, 2018 · Read about your engine here Chevrolet-GMC Diesel Diagnostics Note the info in the fuel injector section for your engine family. I’ve replaced. Fuel Pressure Relief Valve instructions. I used an autometer cobalt gauge. I recently purchased one from NAPA but i can’t find where it’s at on the motor. A friends LLY is losing fuel pressure. Varied responses on when it occurs and what factors cause it to occur. OEM Bosch rail pressure regulator for 11-16 6. If the circuit tests normal, replace the ECM. If you drill and tap the fuel rail, you may develop a leak and it be difficult to fix. #2 · Feb 12, 2012. LinCo’s fix, a fuel pressure sensor fooler, solves both of the aforementioned issues, installs in minutes and retails for just $39. Failure of this CP4 pump is usually catastrophic, causing instant contamination of the entire fuel system with metal particulates. IIRC the low oil pressure annunciation on the DIC comes from the computer, not caused by the gauge. ASE Certified, former GM Parts guy. I replaced both batteries I replaced the fuel pressure sensor on back of driver side rail I replaced the fuel vacuum switch/ sensor on passenger side I Jan 14, 2021 · 2012 LML Duramax Erratic fuel pressure. Sent from my iPhone using AutoGuide. 6L Duramax Diesel Fuel System Test Kit is for diesel fuel pressure and vacuum testing on all model year GM 6. Smoking would indicate either a leaking injector (most common) or mechanical issue (piston ring, valve seal, etc). Any thing more then this and it is harder to diagnosis and takes some special tools. Now drive the truck hard-- with several wide open Sep 4, 2012 · Use common sense safety practices when servicing any diesel system: While maximum control oil pressure on a Power Stroke can reach nearly 4,000 psi, the Duramax fuel system is pressure-relieved at a blistering 27,550 psi. we use to get the 0087 code tip we went and got some mods done and had lift pumps put on 4 of our trucks. It's in limp at 2k hits a rev limiter. Dec 12, 2020 · How to Fix your LLY Duramax Fuel Pressure Relief Valve (FPRV) Problem. PPEI Ez Lynk SOTF, Flo Pro true 5in. Your FPRV " fuel pressure relief valve" might be leaking, it bleeds off excess rail pressure. If anyone could help me out i’d appreciate it. I have a 2018 GMC 3500 I bought new that now has 32,863 miles on it. The rail pressure is high- idle around 5k. MY Build. The injectors require a minimum of 3 BAR (45 psi) of pressure in the return system. 07' Chevy 2500hd. Feb 26, 2018 · Eric shows a helpful tip when installing a Fuel Pressure Regulator. Disconnect the fuel line at the CP3 and put a LITTLE pressure in the fuel tank, use a rag around the air line- check for flow out the hose. PPE Fuel Pressure relief "race plug" https://amzn. Stock #: 12637722. #2 · May 5, 2021. It matches the factory gauges very well. Dec 24, 2018 · The fuel pressure sensor provides a voltage signal to the ECM to indicated fuel rail pressures. The three FPRV fixes are installing a FPRV shim kit, replacing your FPRV with a race fuel valve, or replacing your FPRV with another OEM FPRV. Barely hear it on neutral throttle up, more on driving empty, extremely when pulling trailer. Repeat steps 30 through 34 until no fuel injectors have more than the specified quantity of fuel flow. Of course that means a bunch of other connections. The replacement hose would be a 1/2" diameter Parker part number 601-8 or H017-8. #1 · Jan 1, 2012. The fuel Mar 13, 2022 · What’s Coming From Ford: 1,200 lb-ft of Torque Power Stroke Diesel Engine. I removed of the injector lines, no fuel coming out of that when cranking either? I am thinking maybe the fuel pump is toastam I on the right track? Mar 8, 2017 · Sent from my SM-G935V using Tapatalk. Benjamin Franklin. Every morning I have to pump the primer to get it started. Can't help you with how the your programming changes (for the delete) might have affected your idle fuel pressure, but you can get manuals from Helm publishing. This does not change at all when cranking. The easiest way to get to is it by removing the AC compressor, Thermostat housing and Turbo inlet and you will have a good view of the FPRV. Some customers may comment on one or more of the following conditions: • Hard start • No start Some technicians may find one or more of the following DTCs set in the Engine Control Module (ECM): • P0087: Fuel Rail Low Pressure • P0088: Fuel Rail High Pressure • P0191: Fuel Rail Pressure Sensor Performance • P128E: Fuel Rail Pressure Performance. #1. When that happened, it bumped my fuel pressure up to 8lbs vs the 4-5 that I normally run. The fuel pressure sensor (4) provides a voltage signal to the ECM to indicated fuel rail pressures. I experienced the same problem. 2-4. Contaminates your fuel system and requires a major fuel system replacement to the tune of $8 - $10K. I have a fairly new fuel filter on my factory filter head, plus an ADII165 with fresh filters. Hammerhead Front and Rear bumpers. Caps Used to Block Off the Fuel Rail During Fuel Pressure Diagnostics in 2003-2022 Cummins, 2001-2022 Duramax, and 2008-2022 Ford Engines. 6 LML and LGH Duramax. Idk what you saw but there is no fuel pump in the tank. Jan 19, 2021 · SilverGorillaLML. Buy Replacement Sensors & Pigtail Harnesses for the 2011-2016 GM 6. 4 kpsi at idle, then your FPR is definitely not the issue. Too many damn trucks. Product Description Rail Pressure Regulator 11-16 6. #6 · Aug 19, 2012. Then go to step 35. Diesel. If there is any water in the fuel, the separator will remove it. Aug 3, 2014 · LB7 - No Fuel Pressure, No Start. I went to Ace hardware and didn't have any luck finding an adapter at the shrader valve by the alternator. Pull the connector off the regulator or use a scantool to command max rail pressure. Hey guys, I have a 06 3500 lbz duramax. shaped 3/8 hose-- remove the hose from the fuel rail -- and plug the hose. Dec 22, 2011 · The location of the FPRV is located on the fuel junction block in the middle of the valley underneath the metal turbo inlet. fuel pressure regulator 1 is located on top of the fuel injection pump and fuel pressure regulator 2 (7) is located on a fuel rail (2). If your truck is going from 4. So I checked the balance rates on the injectors. Feb 12, 2012 · 3295 posts · Joined 2008. 0-4. Dec 14, 2022 · Remove fuel pressure regulator on CP4, no shavings, reinstall. Mar 10, 2013 · 18259 posts · Joined 2008. I’m having trouble locating the high pressure fuel pressure sensor. Late-Model Diesel Solutions For Cummins And Duramax Owners. You should be 5-6000 psi while cranking. High Pressure Injection Pump (CP4. 2016 CCLB Dually LML. I was running 6k-6,500 psi at idle a week or so ago, but this week I'm only running like 3500-4k psi at Idle. com App. 2004 ECSB straight pipe, SSDP tuning!!! GM High Pressure Fuel Line (Rail to Rail) 2011-2016. IIRC, getting a reseal after changing FPR or FPS has been an issue. Check the injector return and the pressure control valve in the fuel rail Jan 1, 2012 · 21 posts · Joined 2011. This is my first post, I hope I'll do it right. (helminc. Designed to accurately monitor fuel tank pressure. My Chevy Truck History: 2011 K2500HD LTZ Crew Cab LML. I'm getting the check engine light coming on and the dealer tells me it's Low Fuel Rail Pressure. So This past week I've noticed a decrease in Fuel Rail Pressure at idle on my LB7. Mar 22, 2017 · Change fuel filter message keeps popping up. 2 Inlet Metering Valve (MPROP) for your 2011-2016 LML Duramax engine. Fuel rail sensor. (0) Reviews: Write first review. May 29, 2013 · Sounds like you lost oil pressure or a bad sending unit. Firstly You should check the fuel pump pressure data from the computer. Mar 2, 2016. Well This happened to me friday morning. One is 5-10 psi one is 20,000+ psi. I tried replacing the mid harness and replacing the fuel pressure regulator. Stock #: 12639000. I have a 2012 2500 ccsb lml and my cp4 took a dump in January. If you do not have fuel in the CP3 pump- only air- it will NOT build rail pressure. Dec 6, 2013 · Basically what is happening when P0191 sets is the ECM is having to command a regulator % that is out of a specified "normal range" in order to maintain the desired rail pressure at idle. 2476 posts · Joined 2018. If you are talking about supply fuel pressure-- it will be zero unless you have an aftermarket fuel lift pump. Aug 4, 2023 · Remember that the fuel system from the fuel tank up to the CP3 or CP4 operates on vacuum, and air can leak into the system without fuel leaking out. 6 LML, LGH Duramax. #3 · Dec 11, 2013. Name: Matt. Runs fine doesn’t miss a beat, Pulls weight fine no issues. #5 · Mar 11, 2013. Not necessarily a bad pump. :cool. Jun 8, 2020 · I’m troubleshooting my 2015 lml, died on the side of the road low rail pressure P128e and the change fuel filter message. Edge Controller is showing a code of "Low Fuel Rail Pressure" also the dash has a blinking message that "Power has been reduced" anyone have any idea of what this might be? was driving the truck home from work and the truck will not go over about 50mph and the message was flashing May 5, 2016 · If replacing the rubber section of the supply line, a 1/2 ID hose meeting SAE specification 100R3 is suggested. Silverado, Sierra 3500 HD. 2 doesn’t possess the same track-record for reliability. Hey guys, I have a 2012 6. I have a 2002 gmc Sierra duramax, 315k miles had it for 5 years and no problems at all, but since last summer when the weather gets hot the check engine light turns on, and the rpms don't go over 2000 the code is P0087. Nov 24, 2018 · 2. 6 that has a crank but no start issue. The Bosch RPS Sensor constantly monitors the output pressure of the fuel injection pump. Follow diagnostic chart, test system pressure, relief valve failed" so they replaced the FPRV. Jamo Downpipe. #1 · May 31, 2022. Im getting a vibrating pulse when my key is on coming from my fuel pressure regulator and I want to know if anyone has had this problem. The 2011-2016 Duramax suffers from a high pressure fuel pump issue unique to this year range. #4 · Jan 15, 2014. If the rail side is damaged, the it can be purchased with the fuel pressure regulator and fuel pressure sender already attached. Price: $87. I'm running good psi like it should when I put my foot into it, it will build 22k psi or so. The test port cap should have an o-ring in the top so just use a little vaseline on the top and it should seal fine. This test port comes with the OE thread on dust cap and is factory sealed to prevent contamination. I would get a lift pump gauge that is numbered less than 20. #18 · Dec 15, 2012. #2 · Aug 13, 2017 (Edited) Fuel rail will be much higher than a lift pump pressure. I just got truck put back together. On stock dmaxs they use the high pressure cp3 pump to draw fuel from the tank and then supply the fuel rails. The kit features a gauge assembly with a 3-1/2" gauge that reads 30 inHg to 15 PSI, 6ft hose and quick coupler. But it didnt fix the issue. Some days you turn it off an it won’t crank back up. See this: GM 12651990 LML Rail Pressure Sensor 2011-2016 Duramax As you can see, there's not much to the sensor itself as far as installation. 2006 gmc 3500 xcab lb, with the LBZ. Fleece CP3K Conversion with fuel filter delete. I hooked up the efi on it and it's throwing a p0087 code. Dec 4, 2013 · 5856 posts · Joined 2010. Remove fuel line bracket. Toggle navigation 815-977-5865 Mon Chevy/GMC Duramax; 2001-2004 GM 6. This sensor sends a signal to the ecm if vacuum is too high between the filter and cp4 indicating a restricted filter. Pressure is maintained via a “Constant Pressure Regulator” at 4-11 BAR (58-160 PSI). #3 · Apr 12, 2012. to/35JpCgGWork Light https://amzn. I have 2002 Duramax LB7 that I am having suspected fuel pressure issues. fuel rail pressure. 90% of the time the truck can't build rail because the injectors are returning more fuel than needed thus resulting in low rail pressure because it can't build. Efilive says I have 229 lbs. Helps in identification of faulty diesel fuel injectors and used to diagnose engine knock sounds. Slammed '62 Ford Country Squire Sporting a 900hp Diesel Swap. SKU: 12686809. That is for fuel supply pressure, and can be 10-20 lbs, depends how it is set. 130,000 miles. The high-pressure injection pump moves the fuel from the tank, through the water separator. fuel pump because of weak fuel pressures and replaced both fuel regulators after some diagnosing pointed to them being possibly faulty. The spring gets weak and starts to bleed off rail pressure below the pop off pressure and throws this code. all had the LBZ engine. Jan 9, 2020 · Low Fuel Rail Pressure. #4 · Jul 26, 2020. 6l Duramax 2011-2016 LML Chevy GMC 12651990: Pressure - Amazon. ”. In 2012 there was a P1093 code and the dealer invoice states "low rail pressure during enrichment. Some people think if a little is good a whole lot more is better. Normal smoke when you gas on it. See Details. Disconnect and remove the two bolts securing the glow plug module to the bracket. Thanks for the help guys. Or you could still have some air in the system. . We see lots of these hoses get damaged during service or during performance upgrades. Need or Want Tuning for your Duramax, click Aug 20, 2014 · The fuel pressure relief valve replaces the malfunctioning stock valve. Jul 19, 2012. 2 high-pressure fuel pump (vs. Maybe I'm just missing it. 2011 CCSB 4x4 LML - 65,xxx miles. OEM Bosch Fuel Rail Pressure Relief Valve Sensor communicates the pressure values to regulate the fuel pressure supplied by the fuel injection pump to the fuel injectors in the 2010 to 2016 GM 6. Took out the Tech 2 and have a Commanded Pressure of 5838 and an actual of 19,875. 2. The Duramax uses the injection pump to pull fuel from the fuel tank, through the filters and into the pump. Possible the in-tank line is cracked- fuel hose at the driver side of the Nov 19, 2011 · 977 posts · Joined 2011. My truck will lose prime in the filter housing. Apr 27, 2018 · When the CP4 fails, it "grenades", basically blows up the internals, and sends fine metal fragments through the FPR to your fuel rails and on to your injectors. Engine idling rail pressure is 4K to 5K @ temp (180F) with a fuel temp of less than 135F. This can be caused by several problems. This parts restriction will assist Engineering with product feedback. Hello everybody, so my problem is my truck sound rough on throttle up especially under heavy load. Jul 26, 2020 · 8909 posts · Joined 2011. Add to Cart. 6 LML Duramax. Check the code and it shows P0088, high fuel rail pressure. The truck was headed down the highway running fine and all of a sudden it lost its balls! You have to feather the throttle to get it up to 70 and through the gears. Left the truck alone for the week and went out today to try to check the voltages to the two fuel pressure regulators, stock and Dual Fueler, and the Oct 3, 2014 · I've never had a check engine light and there's only ever been 2 codes found. 1- The sensor fails electrically setting a fault code in the ecm causing a change filter message and zero percent filter life displayed that As part of our ongoing quality improvement efforts the 2010 through 2015 6. One off the liftpump the second off the stock fuel filter head using this adapter. It has done this at 20K once, but not since i changed the filters. If it doesn't clear on it's own, Key off, clear the code, then see if it starts and runs OK. 6L Duramax Diesel Engine Fuel Injection Pump Part numbers 12645102, 12658095 and 12661059 will be placed on a parts restriction through the Product Quality Center (PQC). When I moniter psi on rail it is erratic even on idle jumps 1800 psi up or down on idle. The fuel filter,WIF sensor, filter rebuild kit (o-rings). Play Truck - 2002 LB7 2500HD Crew Cab Short Bed. 6L Duramax engines. I wanted to bleed at the supply lines from the pump to the rails but I’m getting Jun 24, 2012 · The truck showed a p0090 fuel pressure reg code. Buy in monthly payments with Affirm on orders over $50. 2013 Duramax Z71 LTZ Rocky Ridge Edition. 2011-16 LML Duramax trucks are equipped with a fuel filter restriction sensor. Jump out pump the primer bulb an it will start. Lang Tools (TU-32-6) GM 6. Jan 4, 2019 · 18259 posts · Joined 2008. He said his rail pressure is around 17,000. S468 with some fuel and a Tuna or two :thumb. to/3I8VyIw1/2"fuel line https:// Aug 11, 2017 · Jared Herzog. Exergy has a new and improved "System Saver" CP4. 00. Now attach a 3/8 hose to the fuel rail nipple, and stick the end in a bottle. May 28, 2015 · #3 · May 28, 2015. Crank the engine for 15 seconds and verify there is a steady flow of fuel from the fitting OVERVIEW:The return fuel pressure test port for the 2011-2016 LML Duramax is designed to aid the technician in troubleshooting return fuel pressure, often necessary when diagnosing CP4 pump failures. Command high fuel rail pressure, pressure drops. Beyond that try using some temp clear vinyl hose bother before and after the filter head to see if you have an air leak in the supply lines or if it's the filterhead itself causing Sep 18, 2015 · So here is the issue #1 , When i accelerate hard on my level 3 of 4 tunes ( street tune) my fuel pressure went from 30k PSI on my Fuel rail pressure to 2. SOLD: 2007 CCSB LBZ. It turned-out to be a faulty "Water in Fuel" sensor, that was leaking fuel, and allowing air into the line. Step 2: Inspecting The Fuel Pump Sensor Data. May 21, 2017 · P0088 rail pressure too high REPower. This is an actual OE regulated injector return line assembly. Mar 30, 2016 · 2011 durmax LML Fuel pressure loss under load. to/3hVNK1VMetric wrench set https://amzn. Jun 12, 2013 · P0087 code low rail fuel pressure. These sensors are starting to have two common failures. #4 · Feb 24, 2022. Clearville, Pa. Not sure if that was at wide open throttle or nt. Apr 14, 2013 · 06 LBZ No Fuel Rail Pressure. This one is specific to the LML code Duramax produced between ’11-’16, which used the Bosch CP4. Since your not deleted, you’ll have to replace the sensor. The rail pressure regulator (FPR), or Fuel Pressure Regulator 2 per GM, is installed in the left (drivers) side rail. Yes they will leak, one way to fix it, is make sure the lift pump is only putting out 10psi, or eliminate the vacuum sensor all together. com FREE DELIVERY possible on eligible purchases May 5, 2017 · Product Description. Feb 24, 2022 · 10786 posts · Joined 2009. 99. Hey gang, my first post here. 5 lly no start and throwing a low fuel pressure code. Install the cap on the fuel rail in the place of the injection line. Dealers may be able to find a local supplier for this hose, or can contact the manufacturer Parker Hannifin. It reads about 5-7 psi off of the fass 95. fuel filter housing replaced along with all rubber fuel lines with heavy duty May 31, 2022 · 4 posts · Joined 2022. The truck will still build full rail pressure and drive fine - at least for awhile. John Deere Service Manager. I put a exergy sportsman cp3 sdp adaptor kit and a motor ops autocal on it when I took it apart the rollers came off the bottom Nov 26, 2012 · The test is called "Bottle Test"-- here is some info--. Dec 15, 2021 · I have a 2012 Chevy duramax 6. Oct 16, 2014 · 2004. Get Fuel Rail Pressure Sensor, LML, 2011-2012 at Dans Diesel Dealer Login Account. The "change fuel filter" message keeps popping up on my DIC. Mar 1, 2016 · Lake Havasu City, AZ. Jun 10, 2011 · 2500hd 2002 lb7. It is very unusual for a brand new regulator to fail, but we have seen that issues can ar Jan 15, 2014 · 1416 posts · Joined 2013. Also, often there is an air leak in the fuel system. It is an easy fix but first make sure it is your problem by doing a simple bottle test, google Jan 3, 2018 · 1) Check the injector returns: 2) Verify the fuel injector return line pressure is greater than 3 BAR (see “Fuel Injectors” for more information). Connect the test lamp between the solenoid supply voltage circuit, terminal 1 and the solenoid control circuit, terminal 2. If the test lamp did not illuminate, test the solenoid control circuit for an open. #3 · Jan 7, 2019. 7 volts. Got some grief but they supposedly replaced the LH Fuel Rail & Pressure Sensor after 3 days in the shop. 10810 Injector Rail Fuel Line Cap Set, 5 pc. #1 · Nov 19, 2011. I have 300k miles. Don't forget to subscribe!!😊🤙🏼 Jun 12, 2011 · Jun 12, 2011. Buy new ECM, can now see Rail Pressure. CLICK HERE to purchase our LML CP4 High Pressure Fuel Pump Failure Kit. Don’t go there. 5K, displayed on my EDGE CTS. The recommended parts are: HP Fuel Pump, both fuel rails and sensors, fuel injectors and fuel injector return hose. I went out to start my truck and I noticed it took a little longer to start, so I kinda held my breath and hoped it would be fine. 6L LML LGH. Thanks!! :woott: I found the table you are talking about finally. Duramax fuel system is prone to different problems like low fuel rail pressure, fuel injectors failures, etc. That is very high pressure. Ask Question. $240. Present: 2015 K2500HD LTZ Crew Cab Z-71. SKU: 12637722 - E-A-2. Jan 17, 2016 · 862 posts · Joined 2012. MIkey52. 6 kpsi or worse while DRP sat fixed at 4. Apr 12, 2020 · With low fuel flow like at idle with high rail pressure can crack injectors so you want to avoid it for long periods if possible. If you have EFILive if you don't have it already, you can download EFILive and a stock LB7 tune and take a look. Truck starts up and sounds like its knocking then alms down a bit and sounds like a lb7 but fuel rail pressure stays around 20-23k there is no demand for it as the truck is idling. actual rail pressure runs very close, & I haven't noticed any performance issues. #5 · Jul 4, 2013. Aug 14, 2020 · Duramax Engine LLY 2004. From there, the fuel goes into the fuel injection pump, and it is sent to the fuel rail. As long as you have positive pressure feeding the CP3 the rest is trivial. The FRP Sensor issue is the most common cause of the DTC P0191. On the drivers side fuel rail-- to the back and next to the Turbo, you will see a "U". #2 · Apr 22, 2018. Once air has been bled up to this point pump again with the bleeder Jan 4, 2018 · My 2012 Duramax (65K on drive train) stalled out while driving and was just diagnosed today as needing a complete high pressure fuel system replacement (metal shavings in system). Other Names: Pressure Sensor. truck had loss of power when driving under any load or throttle more than cruising. Fuel pressure runs between 7-9 psi. Once started truck runs fine. A CP4 pump failure can wreak havoc on your fuel system and cost thousands of dollars in repair bills. 7 owners on the FTE forum that posted in the past few months of their pumps failing. Your either bypassing to much fuel back to tank, or injector pump is bad. FASS 150, Edge CTS2. Mine actually barely started today with a rail pressure of 1228 psi cranking @ approx 150 RPM. 6L Duramax Exergy Performance Fuel Rail Pressure Sensor. Start with fuel rail pressure regulator check. I’ve had the truck for a month now and got it like this crank but no start . Sold 2021 LM2 Sierra 4x4 crew 6. The NAPA part number is IPS101 and GM part 12651990 Jun 11, 2012 · Bought a one month subscription to Mitchell. Jul 1, 2023 · Duramax engines are known as good and reliable engines, but they have some common issues. The fuel system on a Duramax is fairly simple. Apr 12, 2012 · 34 posts · Joined 2012. There are three relatively inexpensive ways to solve a poorly working Duramax fuel pressure relief valve. Buy with confidence! Fitment: 2011-2016 Duramax 6. The most likely is the fuel filter, which you have eliminated. So what's the best spot to plug in your fuel pressure gauge? I finally found the adapter to check it at the bleed screw on top of the oem fuel filter. If you have to put air to the return line 80 to 120 psi is fine. 3. If you are having this issue, it is due to the high fuel pressure as Ironman said. When that happens, you need to know how to bleed air from the Duramax fuel system. 2) Bottle test to make sure relief valve hasn't failed. Signals the PCM to monitor fuel supplied to the engine. 08. Considering the stock Duramax only sucks fuel from the tank to the CP3 you don't need a whole bunch of fuel pressure feeding it. Their spec indicates a minimum fuel rail pressure of 1450 psi @ cranking speed. It should be making more pressure than that. Did a balance rate test (in neutral Dec 20, 2020 · Every so often. Apr 22, 2018 · 3521 posts · Joined 2011. 3 of them being denied warranty replacement due to the dealer claiming the damage was due to water contamination, 1 was also denied even though no water was found in the tank. Jun 13, 2012 · A truck that is surging would typically be jumping from 4. 69 Camaro S/ST-S/Gas :gearjamin. I've done a ton of searching on this forum and don't seem any real fix to my issue. I'm going to buy the adapter at the bleeder screw point for now and Dec 15, 2012 · 2159 posts · Joined 2011. up ni oo td yi ip um kk xn ib