Lb7 fuel pressure regulator test. I watched him with the scan tool command 23k psi.

Lb7 fuel pressure regulator test Fuel pressure regulator, check to make sure it is not stuck. I believe it is called the "Fuel Pressure Test Port" but your dealer will know Aug 1, 2017 · But on large tune (+230 HP Max Effort) at WOT the rail pressure drops to between 14k and 16k depending on RPM. To each there own though Im not going to judge. Symptoms were hard/no start, long crank time, white smoke. Dec 14, 2009 · Just bought a 2002 LB7, didn't notice it when i was taking it for the test drive (driving it easy) but once we made the deal and was driving home i noticed when i went to pass someone the truck has no power just revs up and crawls along, have tripped several codes (P0087, P1094, P1093) all to do with fuel pressure. For more info please visit Our Website:http://www. Think I got that right. Buy Duramax Fuel Rail Pressure Sensor If these codes set only on hard acceleration or when pulling a hill with a load, check fuel supply issues first. 6L LMM Duramax; 2006-2007 6. Nov 26, 2012 · The test is called "Bottle Test"-- here is some info-- On the drivers side fuel rail-- to the back and next to the Turbo, you will see a "U" shaped 3/8 hose-- remove the hose from the fuel rail -- and plug the hose. Bad fpr on 02lb7 0928400535 Fuel Pressure Regulator Valve Metering Valve fits Duramax LB7 CP3 fits GMC/Chevy 6. T. Still the same thing. Do Not use you fingers to find fuel leaks! High pressure fuel entering your bloodstream may result in amputation or loss of life. May 19, 2022 · Fuel Pressure Regulator (Diesel) connector. Aug 16, 2024 · LB7 actual fuel pressure drop. 2-3 seconds of cranking then fires. When installed in the return fuel system, it allows for a pressure gauge to be connected to the return return fuel side to monitor pressure. 5-2016 6. 616-551-4330 Monday - Friday 8-5 EST. Customer: I have a 2002 duramax lb7 with low fuel pressure at the rail. Apr 12, 2020 · The 2 wires that go to the fuel pressure regulator on the pump have been tampered with at one point as they are out of the factory loom and have been spliced and Apr 20, 2022 · A couple months go by of putting off the replacement and I finally ended up replacing it 2 days ago. Disconnect the fuel rail pressure sensor the fuel pressure should be greater than 175 MPa as displayed on the scan tool. 6L V8 GM Duramax LB7 Diesel CP3 97728979: Pressure Regulators - Amazon. Make sure to keep the wires in the correct order. Dec 30, 2024 · 1 - Duramax LB7 Fuel Pressure Regulator CP3 MPROP. 6L Duramax LB7 Diesel CP3 2001-2004 ; Fuel Pressure Regulator FCA MPROP ETR Diesel Fuel Regulator For Part Number 97728979 ; The FCA is mounted on the back of the CP3 injection pump and is attached by three T-25 Torx head screws ; This regulator will fit all the of 2001 Dec 22, 2011 · The lb7 motor as a FPRV just like the lly and lbz motors, except its in a harder to get to location and most of the time its not needed anyway. 95 Get it as soon as Wednesday, Jan 29 SKU: 0928-400-535-PERF Category: Performance Diesel > Chevy / GMC > 2001-2004 6. 6 Relief Valve . i thought it was the fpr so i replaced it but the codes and defueling came back. Pics are with truck warm and at idle. Symptoms include hard start/no start, rolling idle, fuel pressure drop wi Dec 8, 2011 · 2007 Silverado 3500 Classic - 470k miles - PPE Hot +2 E. Install special tool J44638 to check vacuum restriction on fuel supply to the high pressure pump. The FRP regulator has a solenoid supply voltage circuit and solenoid control circuit. The fuel pressure regulator mounted to the back of the Chevy /GMC CP3 pump goes by a variety of names including: GM Part # 97384667 BOSCH ® Part # 0928400673, 0 928 400 673 $129. it makes the rpms bounce from 693 to 660. Possiably a fuel pressure regulator or relief valve. Again, I don't know the construction of the fuel pressure regulator, or why it really fails, but if it has tight tolerances, moving parts, and seals, poor lubrication in fuel MIGHT be the reason. You can almost feel the Idle not being very smooth on the truck as if the Fuel Pressure Regulator was not working properly. I had to do this a second time for ebay part. FCA / MPROP Connector Pigtail. 5; Start date Jun 24, you need to do a fuel return test to see if you have an injector GM Part # 97728979 BOSCH ® Part # 0928400535, 0 928 400 535 $149. Vehicle wasn't acting up when I shot this video but I had captured the idle surge when it was happening. The CP3 can return quite a bit of fuel and mess up your results if left in teh system during testing. 3 volts at idle. this week it has gotten worse. truck was dufueling and throwing these codes. Accessories; Air Intakes & Accessories; Fuel Pressure Regulator, LB7, 2001-2004 Duramax (0) Reviews: Write first review. MPN: 1465ZS0044 Cross Reference GTIN/EAN Code:3165143517789 Reference Number(s): Bosch: 0928400496, 0928400535, 097728979. 4 KB Views: 148 Ron Nielson - Most of the information I provide relates directly to my 2008 LMM - Your truck may be a little (or a lot) different LB7 Bosch ® New Fuel Pressure Regulator . Buy Duramax 6. See our diagnostic section for more info. Put up codes p0193 and Last Test Failed, clears when the diagnostic Jun 6, 2007 · Fuel Pressure Regulator (FPR) 06-10 Duramax 6. Truck does have an Airdog and the pressure was way too high. I have had several people tell me the next thing to check would be the rail pressure sensor or the regulator on the pump. With the truck at idle, test voltage on the FRP sensor, Yellow wire, back probed at the connector. Apr 21, 2022 · Truck reference info: full HSP intake, 4” straight exhaust, CAT lift pump, EFI Live (LDS tunes), SAC45s. No idea. Oct 10, 2022 · That’s certainly the case with this month’s focus: the fuel pressure regulator on a 2005 LLY Duramax. Tested on: 2003 Chevy 2500HD LB7 Extended Cab works Feb 1, 2011 · Command the fuel pressure control to 160 MPa with a scan tool. Details. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Apr 10, 2010 · Fprv = fuel pressure relief valve Fprv = fuel pressure regulator valve. Whether you’re in search of new OEM injectors, remanufactured options, or refurbished injectors, we have something for any budget. Even was a Bosch part. 6L LB7 Duramax > Fuel System Oct 22, 2015 · 1, the injectors were out of spec, and 2, it needed 23,000psi of RP to have any power. 0 out of 5 stars 2 Bosch 1465ZS0044 New Fuel Pressure Regulator Metering Unit also called FCA or MPROP for GM Duramax 6. 5 Chevy/GMC Duramax LB7 Diesel trucks. 2003 chevy duramax lb7 just replaced the fuel pressure regulator, tried to restart and failed. Apr 28, 2010 · My Duramax LB7 has been smoking white smoke at idle, constant flow every time I stop the truck. Efi live tuned by Rob at ATP, Built trans by Brad at Calvins Auto, Wehrli custom fab s475/stock twin turbo kit, ARP head studs, tie rod sleeves, cognito idler/pitman arm braces, cognito traction bars, airdog 165, turbo horn, LML driver side manifold, cat fuel filter adapter 1r-0749, installed cab lights and tow mirrors. I also had a fuel hose leaking that has been repaired. Remove the fuel pressure regulator (1). 812-785-8470 Mon - Fri 9:00am - 5:00pm (EST) Account. As to op question. • If the fuel pressure is more than 145 MPa, the system is OK. Product Offerings: Injector Replacement Kits: Our comprehensive injector Dec 22, 2020 · That's with everything hooked up, I don't know about maxing out while idling with the regulator unhooked but with it making that much pressure at 1500 rpms I don't know if i would think the CP3 pump is the problem. More rare issue on lb7 & when is a problem or to prevent it, I thought must just plugged it. As an LB7 Duramax owner, you understand the significance of reliable components. Learn how to test your LB7 Fuel Pressure Regulator with this DIY guide. Replacing the FPR in my 02' Chevy 2500HD The main signs and symptoms of bad failing fuel pressure regulator and how to test if it has gone bad. Low fuel rail pressure. 2. 2001 - 2016 . Sep 24, 2010 · Steven 2002 Chevy 2500HD LB7 Duramax <Has 101k, PPE HOT+2 on 225 tune, Edge CTS, Industrial Injection 42% cp3, AIRDOG 165, Banks Ram Air, Banks Wastegate Actuator, MBRP Single 5" Offroad Exhaust with 6" Tip, 7" CST Lift, PPE Deep Sump Pan, PPE Diff Cover, 06' Mirrors & Taillights, Pioneer Deck & Sound, Rancho Shox :rockin > Check out this quick test confirming a failing cp3 injection pump. If the hand pump is soft and then becomes hard, recheck cranking fuel rail pressure. Check for prime at the fuel filter hat's primer. My truck is still running quieter with 192:1 ratio. If you don't have all the tools listed below it may be slightly difficult to accomplish in that time frame Jul 30, 2012 · 02 lb7 crew cab short bed, fully loaded, magnaflow 4", s&b intake, uws black box, fisher 8' straight blade, soon to have some goodies. 9L/2001-2005 GMC Chevy Duramax 6. Fuel rail pressure too high. I have since replaced all rubber fuel lines around the filter head, replaced the filter head + filter itself, and tried shimming the FPRV but am still stuck at a FRP of 200-300 psi. May 5, 2017 · Lang Tools (TU-32-6) GM 6. This FPR service kit from DHD is a favorite amongst installers. Nov 22, 2011 · I have changed injectors - primed the fuel system ALOT and have had several people try to figure it out with no luck. Genuine Bosch fuel pressure regulator for Duramax LB7-Fuel Pressure regulator-LB7 quantity + Add to cart. Buy 6. 5-2005 LLY VIN Code 2; A new OEM Bosch fuel pressure regulator will repair this problem GM Part Number #97728979. Jun 14, 2022 · One small and relatively inexpensive part that can cause a big headache on a common rail diesel is the valve that controls fuel flow into the injection pump. I can take it all the way up to 160mpa and actual sits right at 24mpa. Fuel pressure regulators are common failures on LB7 trucks. 4K views 5 replies 3 participants last post by budtoh3zo Aug 4, 2014 Aug 9, 2019 · Only code it has is P1094 - low rail pressure at idle and is a hard code that comes back right away after clearing. Jump to Latest fuel pressure regulator. (You may want to leave the HP fuel line loose on the rail to get the air out. pdf 249. If you buy the whole shabang of five Mar 6, 2023 · The fuel pressure regulator controls the fuel pressure in your car’s fuel rail, so a faulty fuel regulator means the air-fuel mixture will be disturbed and the engine will not produce enough power. 00, $248. 6L LBZ Duramax Dec 7, 2012 · With the wires unpluged your ECM will send fuel pressure to 100%. Apr 4, 2014 · Watch how we test a faulty fprv on an 01-04 LB7 Duramax. THIS IS TESTING THE Fuel Pressure Regulator. 2 kpsi for fuel rail pressure. Command is still at around 6,000 psi. Jun 1, 2019 · How to test lb7 injector return rates balance rates cp3 failure rail pressure relief valve regulator like to perform this test now, before I even fix the fuel Aug 16, 2021 · Buy Amrxuts 0928400535 Fuel Injection Pressure Regulator for 2001-2004 Chevro-let Silverado 2500 3500 for 2001-2004 GMC Sierra 2500 3500 6. Accessories; Air Intakes & Accessories; LB7 Fuel Pressure Regulator Kit (2001-2004 Duramax) (0) Reviews: Write first review. This comprehensive tutorial will teach you the step-by-step process to test and diagnose fuel pressure issues. Thread starter Nick 6. 95 $ 17 . • Verify the return line fuel pressure is less than 14 bar (200 psi). Ultimately, no change. engine several times to build return fuel pressure. Check the fuel filter. I watched him with the scan tool command 23k psi. When installed in the return fuel system, it allows for a pressure gauge to be connected to the return return fuel side to monitor pressure. Refer to Fuel Injection Pump Replacement . 5-2005 (LLY) Using Snap On Verus Edge Scanner along with Shopkey Pro/ Mitchell1 to diagnose a mechanically worn out F. 6. There are currently no fuel leaks. My friend said he thinks I need to replace my Fuel pressure regulator and Fuel Pressure Relief Nov 9, 2009 · Fuel Pressure Regulator DIY instructions Jump to Latest 106K views 27 replies 16 participants last post by biggar Jul 15, 2013 Jan 8, 2022 · Sent to my mechanic who did the fuel bypass test for the lb7 which showed injectors in spec but CP3 was out of spec so we replace the CP3 with the fuel pressure regulator. 6 L LBZ and LMM Duramax. Has code p0094. This brand new BOSCH ® regulator can fix your problem. I had this issue about 9 month ago and I rebuilt the fuel filter mount and replaced the fuel filter. 6l eng, lb7, 146,000 mi. Once started truck runs fine. Dec 8, 2019 · New Fuel Control Actuator FCA MPROP ETR Diesel Fuel Regulator For Chevy 6. It’s known by a few different names, including fuel pressure regulator, metering unit, or fuel control solenoid, but technically the correct name is the fuel control actuator, or FCA. SKU: May 31, 2022 · I have 300k miles. P. 6L Duramax Diesel Fuel System Test Kit is for diesel fuel pressure and vacuum testing on all model year GM 6. Do you have a way of comparing desired fuel pressure against actual fuel pressure. Trucks exhibiting codes P0090, P0089 and P1093 may be suffering from a failed/failing pressure regulator. It Fuel Pressure Regulator; Testing and Inspection; 2001 gmc sierra 2500hd duramax diesel, 6. I’ve verified low side fuel pressure @ idle to be 15PSI w/ gauge at port near alternator. Airdog 165 installed pretty much same. Remove the 3 fuel pressure regulator screws (1) using a T25 TORX®. Mar 29, 2017 · High Pressure Testing (LB7 Example) Before starting, it is important to note that the high pressure fuel pump must be able to produce a minimum of 2500 to 3500 psi while cranking during the Feb 12, 2007 · In winter I fill at 1/2 tank, which requires about 18 gal of fuel and 12 oz oil. Dont buy online junk. The kit features a gauge assembly with a 3-1/2" gauge that reads 30 inHg to 15 PSI, 6ft hose and quick coupler. Before condemning the high pressure pump you need to make sure there are no high pressure fuel leaks. Rock Auto has a good reputation for OEM parts, but I have not had problems with Amazon. Duramax - 2001-2004 LB7 - Fuel Pressure Regulators . Still have all the symptoms. Getting plenty of fuel to the Schrader valve with no air visually. Ive read that rail pressure will show max With sesor unplugged and pump will produce max with fuel regulator unplugged. How to instructions for an LB7 (and newer)Duramax Fuel Pressure Regulator (FPR) replacement!Instagram: @raberle_lb7Facebook: Reid AberleEmail: raberle2@gmail Apr 25, 2018 · The "Little Box" is the FICM- [fuel injection control module] Used on the LB7 and the LLY- later engines do not use this. Thought we found the problem. R. 6 lb7 New cp3 pump and lift pump new injectors new ecm new fuel pressure relief valve I'm repeatedly changing the fuel pressure regulator after about 3 days of driving it will all the sudden jump to 23,000 psi on fuel rail on idle and as you give it throttle it drops to 2,000 psi and idea what's going on This kit is designed to remove the the High Pressure Fuel Relief Valve located on top of the drivers side LB7 intake runner. Category: Duramax 6. GM Part 97384667 about $290 to $300 •Test the fuel pressure regulator solenoid supply voltage circuit for a short to voltage. 6 Fuel . Truck did great, until about the I95/I26 split in SC when it limped for Low Fuel Pressure. 6L engine, Original Equipment Product GM 6. Running the engine above 1700 RPM switches the fuel pressure control mode to fuel pressure regulator 1. Maximum restriction at WOT (wide open throttle) is 5 inches HG in park. The location of the FPRV is located on the fuel junction block in the middle of the valley underneath the metal turbo inlet. 6L LML Duramax; 2007. Item Condition: Manufactured Anew -This is a Manufactured Anew product “Manufactured Anew” The definition: 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. This article will teach you the most common symptoms of a bad fuel rail pressure regulator, its location, and how to replace it. Using compressed air, thoroughly blow dry the regulator and pump. Given my mileage, I decided to replace the CP3 anyway and it came with a new fuel pressure regulator. If you have less than 2 ounces and still have low rail pressure than most likely you have a failed CP3. Previous shop replaced the regulator and fuel pressure sensor. Fits . Menu Account. com/dieseldoctor Jun 24, 2017 · 2002 LB7 won't start. my question was, are the injectors causing the CP3 to not be able to make necessary RP? or the CP3 not letting the injectors work properly? I did some testing, I Pulled the Fuel Pressure Regulator plug (FPR) from the CP3 hoping to default the CP3 to make max PSI. Does this contain the fuel pressure regulator? What about the fuel pressure relief valve? If not, further testing is needed Apr 18, 2024 · 03 duramax radio wiring diagram Exergy high performance lb7 duramax fuel pressure relief valve (m16x1. Was runnin fine to move around yard and shop. Kit Includes: Bosch Fuel Pressure Regulator for LB7 Jan 3, 2024 · 1x Bosch Fuel Pressure Regulator (FPR) 3x Mounting Bolts; Optional Install Kit; DmaxStore Note: Trouble codes consistent with a failing fuel pressure regulator are P0090, P0089, P1093. The second one is the one on the cp3 and is what lb7kid is asking about. Replaced all the rubber lines. 2001-2004 (LB7) Duramax Second Generation: 2004. Standard® offers over 450 fuel pressure regulators for direct-OE replacements that ensure proper fuel reception and dispensation. Took it to a dealer they said my ecm was not communicating with my fuel pressure regulator so i bought a new ecm. Tested grounds there all good. Apr 27, 2020 · Buy EVIL ENERGY 0928400535 Diesel Fuel Pressure Regulator Compatible with 2001-2004 GMC 6. The CP3 isn't producing enough pressure for a return line test, which needs to be 2500-3500psi, from what I understand. If the wires are disconnected, cut, or the FPR is bad it will default to 100% fuel. Check the two lines leaving the fuel filter "hat", as they have a tendency to draw in air to the CP3 when they get old. Call; Account; Cummins. This test is valid only after other important variables have been verified as acceptable. Nov 22, 2016 · We have a 2004 in right now that is hanging out at 22-23kpsi rail pressure at idle. Aug 22, 2019 · P0087; fuel rail pressure is less than 22. Aug 3, 2014 · LB7 - No Fuel Pressure, No Start Jump to Latest 7. 1) Excessive restriction, fuel supply, plugged filter or sucking air. Has a slight duel knock I can make go away if I back fuel pressure down at idle with tech 2. First do the "Paper Towel" test- drop some warm engine oil on a paper towel-- the oil will make a spot-- and diesel in oil will make a halo around the oil spot-IF ANY. Diagnostics / troubleshooting: I’ve recently replaced the fuel filters at the lift pump and filter head. EN-47589-02 9011 Diesel Rail Fuel Injector Cap/Fuel Pressure Test/Block Off Adapter Tool Set Alt for 2003-2009 Ram 2500, 3500 Cummins 5. When i unplug the fuel rail pressure sensor the edge will read 26. Very little loss of power noticed. 6L L5P Duramax; 2015. Use OEM to mak Mar 25, 2013 · 2004 lb7 ccsb 4x4. While cranking is does not move. Fuel lines were replace 60k miles ago and Injectors were replaced probably 50k miles ago. P0192 Piezo Pressure Sensor Fuel Rail Pressure [FRP] Sensor Circuit Low Voltage 0. Explore our lineup of fuel injectors designed for the 2001-2004. Later May 11, 2021 · At idle I can hear injectors change tones. Cummins Browse Fuel Pressure May 21, 2019 · This guide will demonstrate the procedures to install the LBZ/LLY fuel pressure regulator in the LB7 duramax. My removal procedure is slightly unorthodox compared to other Jul 4, 2022 · Fuel flowed quickly and easily so I eliminated the possibility of a low pressure fuel side issue. (high pressure fuel pump) in the valley of your engine, near the front of the valley. The return fuel pressure test port for the 2011-2016 LML Duramax is designed to aid the technician in troubleshooting return fuel pressure, frequently necessary when diagnosing CP4 pump failures. Also desired fuel pressure at idle jumps from 4900 to 5600. 6 Mar 2, 2012 · My truck is stuck in limp mode and im getting code p0090 (fuel pressure regulator control circuit 1). 2003 2500HD LB7,Fass Titanium. Now won't start. Apr 3, 2008 · Clean the fuel pressure regulator and high pressure injection pump thoroughly with solvent, such as GM P/N 12377981 (Canadian P/N 10953463), or equivalent. It got a new fuel pressure regulator less than 12,000 miles ago. I stick to Amazon seller parts only, not other sellers on Amazon. Also referred to as: MPROP or Fuel Meter; Replaces Part#: GM Part # 97728979 Aug 20, 2010 · lb7 fuel pressure sensor. This forces the CP3 to put max output on the fuel rail. Pressure Regulator d. 6L LML Duramax; 2011-2015 6. The fpr code still hasnt gone away and I even got a new code now. ) If fuel pressure does build during this test then connect the HP fuel line again and start the truck! Nov 2, 2010 · kweiny Diesel Fuel Common Rail Injection Pressure Regulator Relief Valve Plug for 2001-2004 Chevy GMC 6. 0kpsi with key on not cranking. 5 to 2 hours. The ECM monitors the current on the circuits to detect a failure. 6L LB7 Duramax, Performance Diesel > Chevy / GMC, Performance Diesel > Parts > Fuel System, Performance Diesel > Chevy / GMC > 2001-2004 6. Fuel Pressure Regulator Graphing Set up the scan tool in the following Nov 5, 2017 · High pressure fuel is regulated by the fuel rail pressure (FRP) regulator mounted on the fuel injection pump. The FRP regulator is controlled by the engine control module (ECM). Item Condition: Manufactured Anew -This is a Manufactured Anew product “Manufactured Anew” The definition: Oct 6, 2024 · The ECM regulates the admittance of fuel down to lower the pressure, so the more power applied, the lower the fuel pressure on the rails. Apr 13, 2022 · High Pressure Testing (LB7 Example) Before starting, it is important to note that the high pressure fuel pump must be able to produce a minimum of 2500 to 3500 psi while cranking during the Cranking High Pressure Test outlined below for the test to be valid. When you drive it and youre really on the throttle the desired and actually rail pressure is almost perfect. 6L LB7 Duramax Diesel CP3 Pump Fuel Pressure Regulator 0928400535 FCA MPROP Supreme Quality: Pressure Regulators - Amazon. As the name plainly states, the FPR regulates the pressure of the fuel flowing through your system. 5 MPa at more than 600 RPM, fuel rail pressure too low. Both new from bosch. Feb 13, 2022 · However, after priming the fuel system + bleeding the air and trying to crank it several times, the fuel rail pressure will only stay around 200-300 psi. 5-2010 6. Account. wWHILE DRIVING, ENGINE SHUT DOWN, LIKE KEY WAS Jul 8, 2012 · I guess commanded v rail pressure low buy more then 500psi or this #08-06-04-029C: LBZ, LLY, LMM MIL/SES Light On, DTC P0087-Fuel Rail Pressure (FRP) To - Dmax Central Takes less than 2 hours to swap regulator this way. Aug 28, 2013 · Fuel pressure regulator question Jump to Latest 35K views 22 replies 4 participants last post by Shane123021 Aug 22, 2017 1 - Duramax LB7 Fuel Pressure Regulator CP3 MPROP. Of course at this point, it is loping and sounds terrible!! As it warms up, the pressure lowers some. Then 2 days later, hooks up to his 5th wheel camper and heads to Ohio. Shop by Product Type. 5 models. 2001-2004 LB7 VIN Code 1; 2004. Injector Testing; Shop By Part. Eugene, Oregon 4232 West 7th Avenue Eugene, OR 97402 541-485-1434 Oregon Fuel Injection, diesel fuel injection pump, turbo, injector and diesel performance product specialist. The removal of the FPRV will allow clearance for larger Y-bridges and intake combinations. Mar 11, 2022 · Introduction: This guide will demonstrate the procedures to install the LBZ/LLY fuel pressure regulator in the LB7 duramax. diesel911. Kit Includes: Stainless Block Off Plug; 24" 5/16" Fuel Line; 5/16" Brass Tee Fitting; Hose Clamps Jul 7, 2022 · Replaced Fuel Pressure Regulator, Wont Start! - checked all fuses via continuity test Play Truck - 2002 LB7 2500HD Crew Cab Short Bed Oct 20, 2021 · Nick Priegnitz of Duramaxtuner was curious how the fuel pressure regulator works so we cut one open and are showing you what we found on this Diesel Insights Apr 11, 2010 · You could also have a injector stuck open, you will need to beable to check the demanded fuel pressure vs actual pressure with a programmer, like EFI or a tech 2. 6L LB7 Duramax Diesel: Pressure Regulators - Amazon. Jul 15, 2021 · I have a 03 6. 19 Failure out of 20 sample A P0193 Piezo Pressure Sensor Fuel Rail Pressure [FRP] Sensor Circuit High Voltage Aug 13, 2018 · As stated, check the fuel lines. LB7 LLY LBZ LMM LML and LGH. My idle DFRP is 4. Oct 10, 2012 · Your rail pressure being 22-23k at startup would be a possible bad FPR. Dec 11, 2024 · Ok so my buddy picks up a FB special, 03 dually, mostly stock besides a lift, with 280k miles down in FL last week. So How do I know its not the cp3 or the fuel pressure regulator? Or perhaps even an air leak. It has had idle surge and i run 2 stroke oil but it has been sitting alot due to crash and repair but no wires crushed just ego. 125 Sec. • If the fuel pressure is unable to increase to more than 145 MPa, replace the fuel injection pump. facebook. 6L LB7 2001-2004 Diesel Fuel Injection Pump 97728979 Durable Stable 4. Jan 18, 2016 · 03 lb7 getting p0089 fuel pressure regulator 1 performance code and p0088 fuel rail/ system pressure too high code. it now has 3 glitches in it. I still Mar 20, 2009 · Bad Fuel Pressure Regulator? 2001 LB7 4X4 Banks six gun with IQ cold air intake 6in lift fabtech. So far I have replaced the fuel pressure relief valve (no change) and the fuel rail pressure sensor (made it more likely to go throw the 0093 code. I removed the fuel pressure regulating valve and added some shims, no change. The first one is what this thread is about. Preliminary checks 1. At idle and normal driving its all over. If you don't have all the tools listed below it may be slightly difficult to accomplish in that time frame. 0v on this signal wire. Sep 22, 2007 · Oregon Fuel Injection, Inc. You can simiulate max output for the CP3 by unplugging the FPR and fuel sensor. Dec 4, 2016 · Problem- at idle, rail pressure starts out at commanded pressure (around 6,000 psi), then after 5-6 seconds, starts slowly building pressure, usually leveling off at around 20-22,000 psi. Hard to detect leaks at these two fuel lines, as they are suction lines, rather than pressure lines. The only thing we can find is with the truck off and key on the fuel rail pressure regulator reads 5volts on the power wire and signal wire. But I always fill the filters with fresh fuel as to minimize the introduction of air to the system. 9-5. Order a top-quality LB7 Duramax Fuel Pressure Regulator for fuel injection from Accurate Diesel! Feb 2, 2011 · If it is more than 2 ounces you need to dig deper and isolate wether it is an injector or the fuel pressure relief valve. I've never been Replacing a faulty fuel pressure regulator may solve the common surging and loping idle that many high mileage Duramax's have. 30 shipped to my door. . My thoughts: I mentioned the frequency increase after I change fuel filters. DURAMAX. What is a Fuel Pressure Regulator?A fuel pressure regu Apr 15, 2018 · Buy I-Joy 2001-2004 6. Truck Feb 1, 2008 · I am looking for some advice to properly diagnose what appears to be a low fuel pressure problem. Shop by Product Type; Drivetrain Faulty fuel pressure regulator causing idle surge. The easiest way to get to is it by removing the AC compressor, Thermostat Sep 24, 2016 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright This regulator is a drop in replacement for all the of 2001-2004 LB7 Duramax Diesels. Can prime fuel to test port on front of engine but lose it as soon as it cranks. 5 Fuel pressure regulator install kit (2001-2004 lb7) – dmaxstore Lb7 fuel pressure re Dec 11, 2019 · Some guys just put a fuel regulator on the pump, but why if its already got a stock one on the engine. 2002 chevy 2500hd CCSB 4X4 Debadged and DEmolded-EFI live w/ Dsp5 tuning (SocalDiesel) Jun 10, 2012 · 2003 LB7 crew cab,long box, dually Ported/Polished heads,APR head studs , PPE manifolds/up-pipes,MBRP turbo down pipe , LBZ CP3/FPR Camshaft keyed , SoCal superdamper , Air Aid cold air intake, ProFab turbo inlet horn , Banks big head wastegate actuator , Fass Titanium lift pump, Bank exhaust brake, Build transmission , Pump rub kit. Our kit includes everything needed to do the job correctly, the first time. Feb 15, 2020 · c. fuel pressure relief valve (high pressure limit valve), check to make sure it is not leaking into the return system when rail pressure is 160 MPa. First I replaced the fuel filter, no change. Now a few weeks ago I had thrown the FPR Code p0089 (while it was smoking at idle). Sep 12, 2010 · 02' Silverado cc/lb lb7 zf-6, EFI economy tune, 5 inch exhaust, cold air intake. 99 Complaints of surging or loping idle are often caused by a faulty fuel pressure regulator. Regulator. Fuel rail Go to Duramax; 2017-2023 6. Apr 19, 2013 · P0090 Fuel Pressure Regulator Control Circuit P0193 Fuel Rail Pressure (FRP) Sensor Circuit High Voltage C0040 Right Front Wheel Speed Sensor Circuit Only one you said you touched was FPR circuit but again something is going on to set all those off and only you can retrace your steps and solve it. LBZ Reg for LB7 mm3/s mA 0 1550 1000 1500 2000 1460 3000 1415 4000 1395 5000 1380 6000 1366 7000 1354 8000 1340 9000 1328 10000 1316 11000 1305 12000 1290 Dec 17, 2021 · After the filter head, the next likely culprits for air in the fuel lines on an LB7 are the rubber fuel hoses in the valley of the engine that connect to the CP3 injection pump, the fuel filter housing, the fuel injection control module, and the fuel pressure relief valve. (Fuel pressure regulator). truck starts and goes fine when plugged in over night. 6L Duramax engines. Mar 29, 2017 · Start by first stroking the hand pump. Check engine oil level, LB7 engines have the injectors under the valve cover and are very susceptible to dilution. 9 Volt rp_ad <= 42 AD Counts No related malfunction ( 5VB_A) IGNITION is ON not in Power_Down_Mode Key_on_time>0. com/And Facebook:https://www. 6. com FREE DELIVERY possible on eligible purchases Apr 16, 2012 · Throwing code 0090 fuel pressure regulator control circuit. SKU: 609 Category: Injection Pumps LB7. 6L LB7 Duramax > Fuel System, Performance Diesel > Parts > Fuel System > Injectors & Injection Pumps, Performance Diesel > Chevy / GMC > 2001-2004 6. 1 and my FRP matches that at idle. Rebuilt fuel filter housing, no change. If pressure is now okay, you have a fuel supply issue. After testing is complete, carefully release any residual fuel pressure in the return fuel system. Duramax Fuel Pressure Regulator $216. Jan 20, 2009 · for a while now my fuel pressure regulator has been bad. If the actual fuel pressure is near 5,000 PSI, which is normal idle fuel pressure, you should see near 1. Run the engine at 2000 RPM for 2 minutes: • Verify that the return fuel pressure is greater than 4 bar (58 psi). d. I don't have monitoring equipment, or a pressure tester for that high of pressure. Replaced the ficm. The time taken to accomplish this was around 1. In this video I walk through diagnosing a P0087 trouble code on a 2006 GMC Duramax. will delaying this fix cause more damage or is this just more of a anoying sound then it is serious? This genuine OEM Bosch part fits 2001 to 2004. Feb 23, 2014 · Same thing. Check fuel pressure regulator 2 as outlined in “Hard Start/No Start” above. com FREE DELIVERY possible on eligible purchases Mar 3, 2013 · Test the fuel rail pressure sensor signal circuit for a short to ground. 6L Duramax LB7 The fuel system contains high pressure fuel up to 25,000 PSI. Adjusted pressure to 8-9 psi at idle and not a thing changed. If fuel pressure regulator 1 is leaking or binding, the fuel pressure will fluctuate above and below the desired fuel pressure by greater than 690 KPa/100 PSI. It manages how much fuel to send to the engine for different actions, so it’s constantly working. Each kit includes a new OE Bosch fuel pressure regulator, new hardware, new updated FPR/CP3 jumper harness and an application specific torx bit. This Genuine OEM Bosch fuel pressure regulator is installed in the CP3 high pressure pump on 6. 6) Before condemning the high pressure pump you need to make sure there are no high pressure fuel leaks. it goes from 693 jumps up to 720 and then goes down to 660. 6L LB7 Duramax $17. Jul 4, 2022 · The CP3 isn't producing enough pressure for a return line test, which needs to be 2500-3500psi, from what I understand. com FREE DELIVERY possible on eligible purchases May 19, 2021 · When accelerating aggressively they start to deviate until It throws the 0093 code and goes into limp mode. The FPR is located on the CP3. Using bi-directional controls and monitoring desired vs actual fuel rail pressure it wont build rail pressure what so ever when i command an increase. My edge programmer is telling me that my fuel rail pressure is about 26000 psi while the desired pressure is around 6000. 6L LB7 & More (6PCS) Dec 26, 2015 · It seems more of an LB7, LLY problem. My 01 D-max has had an idle surge for at least 18 months. programmer, Auto Meter boost and pyro gauges, Magnaflow 5" exhaust, Pro Fab EGR delete, Y bridge and down pipe, Detroit TrueTrac, 4. Fuel filter changes and fuel additives have not had any positive effects to cure the surge. Also replaced the fuel pressure sensor fuel pressure relief valve. The fuel pressure regulator is the most likely cause for a surge at idle or a loping idle. 10 gears, Air Lift air bags, all Moog front end components, Energy Suspension control arm and leaf spring bushings Sep 24, 2016 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright If the FRP sensor is replaced, also install a new pigtail connector. If you have a scan tool capable of viewing desired rail pressure and actual rail pressure, you'll likely see these numbers have a large spread on trucks trying to overcome FPR issues at idle. Testing Feb 23, 2020 · It is time to change the fuel pressure regulator (FPR) in my 2001 LB7 Duramax GMC Sierra 3500. SOLD :03 lb7 ex cab long bed UWS black box, EFI by tony at ridgerunner, S&B intake, Profab turbo horn, profab downpipe, MBRP 4 inch single, PPE boost valve, EGR blocker plate May 24, 2020 · okay with on no cranking the Edge cts read 0. Dec 29, 2018 · Perform the enhanced injector return test. 1 Volt to 4. Also sometime i get p0088 (high fuel rail pressure). Nov 27, 2023 · I'm changing my FPR Again! Already changed it out once with a cheaper unit then one off Ebay listed as New (Bulk Bosch Fuel Pressure Regulator) $42. 4" Magnaflow ported the turbo intake AIRDOG II 165 ,PPE boost Sep 5, 2014 · Also its a little hard starting. So I started testing my wires and it seems my fpr wires are Getting a ground on the black wire and the power wire is only showing . gclo plx zmlsbm icjwp wovz ychbz avhlztr cjd embbkir hsxkbvkw