How Long Should You Replace Fuel Injectors? Save my name, email, and website in this browser for the next time I comment. There is a fuel injector for each cylinder in the engine and their job is to spray fuel into those cylinders. When the issue occurs, the engine will become very shaky and various engine lights including Stabilitrak and ABS will appear. Another thing that owners have noticed is the TMAP sensor getting caked with soot and causing other issues. Here are some of the specifications of the L5P Duramax engine you should know: By now, you are aware of the L5P Duramax problems and how to fix them. L5P Duramax Problems for Vehicle years 2017, 2018, 2019, 2020, and 2021, Often Asked Questions on L5P Duramax Problems. Today, after a 30 minute interstate drive, I reached my destination and immediately after putting my truck in park, a poor DEF quality warning came on. Such upgrades may include hydraulic upgrades, transmission cooler, friction materials, and multi-disc converter. One of the most common is the coolant tank sensor going bad. As the name Duramax suggests, these trucks offer maximum durability. Sale Shop. The MAP sensor being clogged with soot and turning on the check engine light is the only typical problem. Q) Which Turbo does the L5P Duramax have? After drying, reinstall the MAP sensor to its appropriate location. Being a successor of the LML Duramax, which had issues with fuel injections, the L5P had a lot of expectations. This engine is highly durable mechanically, and owners have only had a small number of problems. L5P DURAMAX TURBO AND INJECTOR FAILURES!! - YouTube Also Read: 3.0 Duramax Diesel Problems [Common Issues Fixed]. All, Car Maintenance, Cars With the CP4 being taken out. Found a local shop with the scanner they reset the DEF sensors and cleared the issue. Moreover, the lift pump will help the injection pump do its job and can help extend the life of your injectors pump and the injectors. Having said that, the L5P doesnt actually have common problems like this. A: GM ultimately learnt their lesson and, with the release of the L5P, fitted their trucks with a lift pump after 15 years of producing Duramax trucks without one. If the pins are bent or have rust, then you have found a problem, and should be fixed. The transmission can often handle about 500 whp without too many problems, but if you start pushing over those levels, youll need to invest in some pricey transmission improvements. One common problem is with the MAP sensor however, as it tends to clog with soot and throw a check engine light, but a simple MAP sensor spacer and a can of electrical cleaner can get you back on the road worry free and prevent the soot from building up again. ], 5 Best Japanese Sports Cars [With Secret American List! Why Duramax L5P Engine Is The Best(Video), Service Brake Assist Chevy Impala (Meaning And Function Explained! On the other hand, you can get a repair shop to fix this part for you and note that the costs may vary from one professional to the other. Almost all pickup trucks with Duramax engines were fitted with an Allison 1000 automatic gearbox. 2022 Duramax | Chevy and GMC Duramax Diesel Forum Failure of the Duramax L5P 217MAP Sensor. The five-speed Allison transmission is by far the least reliable of the group, and if you are pushing more than 400 horsepower, youll likely notice reduced engine output or limp mode, which activates when the TCM detects slippage. Change fuel filters after 22,500 miles or when the dash light comes on. Moreover, the car will go into a limp mode whereby you will get engine codes such as P0204, P0300, or P020D. P1133 Code Chevy (Meaning, Causes, and How to Repair), Are All Chevy 6 Lugs the Same? Stabilitrak and ABS engine lights as well as other extra engine lights start to show when the engine starts to shake a lot. Injector failure was a common problem on the LB7 engines. At its best, the L5P Duramax is a reliable and very tuner-friendly engine with the stock fueling system being able to handle up to 800whp and the turbo handling up to 600whp. What are the L5P Duramaxs most frequent problems? Emissions Friendly Bolt-On Upgrades for the 2020 Duramax When GM released the all-new 2020 Silverado and Sierra HD 6.6L Duramax, there was a lot of talk within the market. Your email address will not be published. It is hard to find out what is wrong with this engine, but we have tried to cover those that were reported the most. As you have seen, replacing the L5P injection is essential as it will fix the issue and improve the overall performance. Brought it to the dealer and it turns out the air filter collapsed. Fortunately, its one of the Duramax diesel parts that can be added easily without spending a ton of money. Finding 3 problems with the L5P proved challenging. We have discussed more information about this issue in another section below. Dealership says it is covered under the #16-NA-32 Bulletin on common engine noises Duramax 6.6L, but this is not the ticking or cycling that I have heard on my . ), The Most 3 Major L5P Duramax Problems (Get Quick Solution! Allison Transmission - 1000 3. First arriving as a replacement for the 6.6L LML V8, the turbo-diesel 6.6L L5P V8 Duramax engine is an extremely robust and capable powerplant, producing upwards of 445 horsepower at 2,800 rpm and . Brush it off or clean it with the electric part cleaner. Your email address will not be published. When you go to buy a used LB7, its important to find out if it still has the original factory injectors. You can prevent limp mode for a very long time with a few upgrades like improved friction material, important hydraulic changes, a decent trans cooler, and a multi-disc torque converter. Additionally, the fuel injection pump sends fuel from the gas tank through the gas lines and into the injectors. The only other minor issue is one found by expert tuners. The new sensor will eventually silt up and stop working altogether. L5P: - Def low warning.not true | Diesel Place 2020 6.6L L5P Poor Def Quality : r/Duramax - reddit 97702 Derringer for 2020-2023 GM L5P - Banks Power !NEED L5P Parts? However, as the first models hit the 100,000-mile mark, some issues cropped up. You will need a paper towel or a dry soft rag and an electric part cleaner to clean the exterior part of the sensor. Change engine oil after every 7,500 miles or 12,000 kilometers. Its easier to pick the best Duramax engine as the LBZ stood the test of time. . New Here and Problems | Chevy and GMC Duramax Diesel Forum The L5P doesn't have a whole lot of common problems with its emissions systems, but they are very expensive to replace when they do break. MY FIRST ISSUE AFTER TUNING THE 2020 L5P DURAMAX! - YouTube This is done by continuously monitoring pressure information in the intake manifold. The information on this website is derived from publicly available sources and AutoLawNow.com cannot verify or confirm the genuineness, truth, veracity or authenticity of this information. It was nearly identical to the LB7 engine and emissions control parts continued to be absent. That should be the all time test. Find out how GM bumped up the HD'. If youre trying to choose one over the other, it largely depends on what you need. You can also check this YouTube video link for a more descriptive troubleshooting process. MESSAGE ME ON INSTAGRAM @Denny_Diesel OR EMAIL dennydiesel@yahoo.comFollow Me On INSTAGRAM! Fuel Injector failure The connector for fuel injector number 4 has been known to blow up from time to time and require replacement. A fault MAP sensor can also affect the fuel economy as well as the engine performance and this is the case in the L5P Duramax. This was in-efficient and often caused problems on trucks with any sort of performance modifications. Failure of Fuel Injector-4 What shall we learn in this article? In general, a malfunctioning MAP sensor will result in subpar performance and, if it is not promptly repaired, can result in severe engine damage. [Reason & 100% Solution]. The gearbox is strong and shouldnt create any problems on a factory L5P because it has a new torque converter and various other modifications. How much horsepower does the L5P engine have? The L5P is largely considered to be the best post-emissions Duramax engine. Diesel oxidation catalytic (DOC this is its own pipe in the exhaust), Diesel exhaust fluid (DEF, used in conjunction with SCR), Power gains in excess of 100whp when turned (gains mostly come from tune), Increased turbo efficiency and reliability, Improved reliability, decreased maintenance costs, Its technically illegal and can come with big fines, Installs must be DIYd (shops wont install these anymore), Needs to be used in conjunction with a DPF capable tuner. Rich air-fuel ratio: Watch out for signs such as rough idle, poor fuel economy, strong smell of gasoline, or slow acceleration. On average, fuel injectors can last between 80,000 and 100,000 miles. AutoMeter 5323 OBD-II Signal Splitter Adapter $ 43.47 2050-01-01. If your injection pump has failed to operate properly, it is time for a replacement. MY FIRST ISSUE AFTER DELETING THE 2020 L5P DURAMAX!!! Hence, the engine will run at low RPMs than usual. April 6, 2018 Billy Bergman Comments Off on Derringer L5P Tuner for the 2017-2019 Duramax: Real Power is here! The L5Ps MAP sensor has to be cleaned frequently. Also Read: How to Fix Chevy Silverado P0102 [MAF Sensor Trouble Code]. Duramax L5P DPF Delete Guide - How to Delete 6.6L L5P DPF Mechanically, the L5P Duramax is stout and very few major problems have been reported. ], Can Police Tow Your Car from your Driveway? The stock air intake system was one of the culprits. Fuel smell especially if the injectors are clogged or damaged. My truck has about 23,500 miles and has never had an issue or warning light for anything prior. Count on ProSource Diesel for L5P upgrades, LML Duramax parts, LMM Duramax upgrades, LBZ Duramax upgrades, LLY Duramax upgrades, LB7 Duramax upgrades, and a wide selection of hard-to-find kits, Duramax performance parts as well as thousands of other diesel parts. But keep in mind that replacing it will depend on your location and the issues with your fuel injection pump. [Law Advice! Let the sensor dry. Turn off the engine and disconnect the MAP sensor. As it is now on the market, it is obvious that there are not many problems you can find about. You can follow the Duramax injectors replacement instructions to get the job done. How Long Can You Drive with your Tire on Fix a Flat? The stock transmission can handle 500whp without any modifications. The 2020+ Silverado and Sierra has been a total success in the market and that L5P Duramax paired with the all-new 10-speed Allison transmission is just flat out impressive. As you may know, the MAP sensor is located inside the intake manifold and is used to calculate fuel injection, which ensures an optimal air-fuel ratio. Duramax's journey will be much smoother and longer compared to Powerstroke and Cummins. Other than that it's a solid platform and highly recommended. The 3 Most Common Duramax L5P Engine Problems - 6.6L Duramax However, the LMM pistons were liable to break even easier. 158 Views. That was one area of problems, but the other area was with the pistons. For instance, the latest Alisson 10L 1000 transmission is one of the most well-engineered, robust, and dynamic transmissions that can be found in the 2020 DuraMax trucks. Not sure how or why but they replaced it and did 2 forced regenerations cleaned the sensors and it seems to be okay now after putting around 100km on it. Below are a few maintenance tips to help your L5P Duramax last longer: Firstly, Duramax trucks never had a lift pump even after when the Silverado 6.6l Duramax diesel V8 was introduced in 2001. Why EGT is Important. Getting To The Bottom Of This 2020 Duramax Coolant Leak! They can last even longer with proper maintenance. ], Buick Enclave Years to Avoid [Mechanics Verdict! They are more reliable and feature an impressive 445 horsepower and 910 lb-ft of torque. Gotta do a 4.5 hour drive tommorow with a loaded gooseneck. Only charged me $20.00. Some owners have reported the engine to have lasted over 500,000 miles. None of the Duramax engines are exactly duds. We highly recommended to read more about chevy LB7 Duramax Issues. The intake manifold of the L5P houses a manifold absolute pressure (MAP) sensor. 01. In actuality, there isnt much to be unhappy with in terms of this specific engine. As a result, you will notice hard starting and rough running especially at idle. Here are the most reported L5P Duramax problems that most owners have encountered. Lack of power and overall poor performance, Limp mode, ABS and Stabilitrak lights come on. Additionally, they are restrictive from a performance perspective. The MAP sensor also helps determine when ignition should occur within the current operating conditions. Many LML owners actually install the older Bosch CP3 that was first used in the LB7 engine. When you think about it, the problems mentioned in this piece are actually just a matter of fine detail. As previously mentioned, every Duramax engine has strong points and weak points. One issue that has been noted mostly on the engine is with the MAP sensor, which is known as the manifold absolute pressure sensor. L5P soot problems | Diesel Place It can become clogged up by debris, which may affect the readings sent to the ECU. With improvements and upgrades done to such parts as the block, pistons, and fuel injection, then the engine can be highly efficient. As the original Duramax model, the LB7 is still extremely popular with diesel enthusiasts due to its lack of emissions control parts. It can take you up to 7 hours or more to fix the injection pump especially if it is your first time. How to Troubleshoot the MAP Sensor Problem? Leave a comment If you are a truck enthusiast, you know that the L5P Duramax is a big deal. If you are wondering if you can replace the pump yourself, then the answer is yes. Finally, let the MAP sensor dry, which should not take long. Save my name, email, and website in this browser for the next time I comment. With that massive front-end and the bold, in-your-face grille and headlight combo it's either a love it or hate it appearance. AutoMeter 5323 OBD-II Signal Splitter Adapter AM-5323 2.00 Auto Meter 5323. GM even recognized the problem as they eventually corrected the original design and offered a 200,000-mile warranty on the updated Duramax parts. Other signs include: You can fix this issue by replacing the stock connector with a gold-plated connector or an LBZ connector. Put on rubber gloves and safety glasses. Banks Power Scientifically Kills The L5P Duramax Engine: Video The hose should also be clean and with no dirt. However, some Duramax engines have significant weak points that outweigh the strong points. Denso G4S Gen 3 Injectors. Gale Banks takes a close look at the new 2020 Duramax L5P. So, it can easily tow about anything you throw at it. Cal. The only real issue is something that GM simply didnt install: a factory lift pump. September 10, 2022 We have discussed more information about this issue in another section below. When it comes to issues with the stock engine, the LLY and LML are largely considered to be the most problematic. The MAP sensor on the Duramax L5P has a history of clogging with soot or grit, failing or sending false readings to the engines computer. Like most gasoline-powered trucks, the lift pump is placed inside the fuel tank. It also has a towing capacity of up to 36,000 depending on the truck model and year. The ideal fix is to use Duramax aftermarket parts like a cold air intake and either an aftermarket turbo inlet or one from a stock LBZ engine. 2020 6.6L Duramax: Bolt-On Upgrades - Diesel World While many forums would lead you to believe this, it's . A recall for fuel injector calibration (recall N182179090) was also issued in February 2019. It was an impressive powerplant and came with a common rain fuel injection but had no lift pump. If everything is okay, then start it is time to troubleshoot the MAP sensor problem. If it does, you know a replacement job is in your future. Installing a new sensor wont fix a broken MAP sensor; it will just reset the clock. How Long Does it Take to Replace Motor Mounts? May 8, 2020 Dealer trades can easily have 300 miles on them, but that is not relevant to his issue. It is regarded as GMs top Duramax after emissions. When you buy a vehicle and it starts it's life out with these kind of issues, you will always wonder if it is going to be an issue for the entire time you own it. The DPF does NOT restrict your horsepower. Fuel injector number has been reported to fail on rare occasions, which may lead to the need for replacement. A: The L5P Stealth 67G2 is the greatest drop-in turbo ever mounted to the 6.6L L5P Duramax in models from 2017 to 2019. This will tell you a lot about whether the MAP sensor is damaged or where the problem might be. Unfortunately, the Allison 1000 transmission is the largest obstacle to huge power. L5P Duramax also has an incredible 445 horsepower and 910 lb-ft of torque. Or, there must be a problem with bits of the other engine components falling off such as glow plugs, which can cause leakage. There are typically two ways to avoid the MAP sensor being clogged: By displacing the soot deposit away from the EGR stream, which is the main culprit, a MAP Spacer lowers the amount of buildup. Dedicated to making your Chevy Truck bad***. A: The L5P, which was released in 2017, is the most recent and best Duramax model. However, if you are looking for more power and performance, then you will need to perform some modifications such as ECM tuning, 5 exhaust upgrade, cold air intake upgrade, intake horn, and downpipe upgrades. 1. Common problems reported from this engine include MAP sensor failure and fuel injector issues. Lemon law that thing! To get this type of power without compromising emissions, GM had to increase the fuel system pressure. As mentioned above, excessive mods to get more than 600 horsepower can cause the LBZ pistons to crack. Common Duramax Diesel Problems, Troubleshooting, and Solutions One of GMs top engines, the L5P is a dependable engine. [Mechanics say This! Just install a MAP sensor spacer and use an electrical cleaner to remove the soot. www.peakperformanceproject.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. The MAP sensor is susceptible to being clogged or junked up like any other sensor, which may impact the measurements supplied to the ECU. Replace the transmission fluid after 97,500 miles. The fueling system can manage up to 800 whp at stock, the turbo can handle 600 whp, and the engine has been redesigned from the previous iteration, making it simple for tuners to work with. Confirm on the maintenance schedule for more information on how regularly you should care for the L5P Duramax engine. But for this to be achieved then you should perform the recommended routine maintenance. The ratios of rich to lean air to fuel (AFRs). It has slightly lower pressure but is actually capable of more horsepower. A ADE Registered Joined Sep 24, 2018 117 Posts This causes hot spots to form on the weakest part of the piston, which can lead to cracking. After that disconnect the sensor and inspect the pins, which should be straight and clean. Although it is a superb piece of engineering and is renowned for its dependability, it does have a few problems that owners have noted over time, and in this post, we will investigate them. However, once data starts fueling the debate on whether to delete or keep your emissions intact you may change your mind of what to do. It is possible to prevent this problem by installing a lift pump that provides better filtration for air and debris. Other Duramax LLY problems included the following: Head gasket failure Injector harness chafing Water pump failure EGR valve issues Glow plug failure Fuel pressure relief valve Lack of factory lift pump Purchasing the L5P Duramax injection pump can cost approximately $795 or more. Even though the #4 injector is not specifically mentioned in this recall, it is still important to make sure it is done to avoid any more injector problems. Why The 6.0L Powerstroke Replaced The 7.3L, Cummins Generations of Dodge RAM Diesel Trucks Part 2, What To Look For When Buying A Used Powerstroke Diesel Truck, Cummins Generations of Dodge Ram Diesel Trucks Part 1, GM worked out the bugs of previous engines. ], Can a Bad Catalytic Converter Cause Car to Shut OFF? Normally, replacing the fuel injection pump can cost you around $350 and $850. However, like any other engine, this too has encountered a few problems that were reported by its owners over the years. Conversely, the problem is not with the fuel injector itself, but instead, it is the connector. Amazon, the Amazon logo, AmazonSupply, and the AmazonSupply logo are trademarks of Amazon.com, Inc. or its affiliates. But lets dive deeper into this factory turbocharger and . The power was increased for this year to almost 400 horsepower and 765 pound-feet of torque. In general, the L5P Duramax is one of the best engines with incredible horsepower and towing capacity. ], Check Fuel Cap Honda Accord |Causes & Fix, Typical Car Accident Settlement Amounts-How to Calculate, 4 Signs That Your Clutch Flywheel Is Failing (With Repair Costs). . Besides, it is a good engine with only a few problems that can be cheap to fix. *Rookie mistake*JW Merch here: https://jwmotorsportsco.com/Denali Playlist: https://www.youtube.com/wat. Another probable cause is the excessive valve clearance on it. But note that there are different Alisson transmissions such as 2000 series, 3000, etc., which keep on advancing with the years. One of the engines that will take care of you if you take care of it is this one. Unfortunately, this led to the injection pump becoming a ticking time bomb. Mechanically, this engine is quite stout, and owners have reported very few problems. Lean air-fuel ratio: Look for lack of power, hesitation, stalling, surging, overheating, and misfiring. In this article, we are going to cover some of those L5P Duramax problems, their solutions, and everything you need to know about this engine. LML Duramax Problems [Youll Be Stuck If This Happens! Required fields are marked *. AutoLawNow.com is not an intermediary and hence does not endorse or solicit any such products. Using an LBZ connector or purchasing a gold-plated connector, both of which result in a superior connection, appears to be the trick thus far. @De. Duramax Problems by Year - Prosource Diesel To repair this failure, you need an entire fuel system kit, which includes a new pump, high and low-pressure fuel lines, a new fuel filter, new injectors, and a pair of new fuel rails. If properly cared for, you should expect the L5P Duramax to last over 300,000 without any need for big repairs.