Try installing clear fuel line before and after. Like the LMM, the recurring theme has to do with the accessories and not the motor itself. Got a question? I have changed it twice and replaced the air cleaner. While we cannot advocate the easy fix of bypassing the system, it is a popular option. Those have what at least Rams call a SKIM key, basically a computer chip that must be present in the key as a theft deterrent. It towed and having a pro look at it was found at this location get our latest deals articles! Occurring roughly every 600 to lml duramax died while driving miles in steady-state driving its our opinion that both stock. Duramax History, Lesson 5: LML. So kinda thought the fuel line replacement wasnt the issue. I have a 2005 GMC Duramax 6.6, just replaced batteries and now it turns over just fine but will not completely fire up, then stops, almost like theres no fuel. Thanks for the help. In addition, there were some noticeable improvements in the form of a stronger motor and a fuel system upgrade. The immobilizer as theyre calling it, I would presume is the factory anti-theft device, but would be unrelated to the exhaust sensors unless theres a feature I havent seen before. Is that different than just block off plates? It does not change in intensity while accelerating or slowing down. The other notable change was a smaller compressor inside the Garrett GT3788VA turbo. The increase in overall performance that the 6.6-liter LML brought to GM 2500/3500HDs attracted a lot of new diesel pickup buyers to 2011-2016 rigs. Call wehrli, sdp, fleece, and see if they offer a emissions compliant kit. People often ask what is the best lift pump for an LBZ, and truthfully ANY lift pump is better than none at all. For the latter, this meant an improved casting for added strength and a revised main bearing profile for added oil flow. 2022 Merchant Automotive. Now, i have rough idle intermittent. Pull the reg on the passenger side rail. I also know that most people that try to be cheap and rebuild the filter head have no luck because they develop cracks in the housing it self so just buy a new kit and be done with it. Any suggestions on where to look next? The codes they get are P0191 and P026C. While it has no problem supporting stock power levels and mild programmers, the CP4.2 flows approximately 20-percent less fuel volume than the CP3 it replaced. Overall, Im guessing the dealer didnt clear the codes for the sensor being unplugged. As the first batch of trucks started reaching the 100,000 mile mark, it became apparent there were some issues with the new engine, and one of the first symptoms exhibited would be a rough idle from the LB7, excessive smoke from the exhaust, long cranking times, and even fuel diluting the oil in the crank case. Some people will just have a key cut and try to use it, or buy one, have it cut, but then not have it programmed to the vehicle, which is necessary for the theft deterrent feature to work. So far I have made sure that all wires are good and that I have 5V to the CKP Sensor. The next day its fine. If one cylinder is contributing too much or not as much as the rest, the cause is usually a bad injector and the cure is a replacement. New Fuel Pump and Injectors. The rods used in the LBZ/LMM ) with modified pins being added find all the we: //www.justanswer.com/chevy/hvf1w-i-ve-2016-duramax-6-6-lml-it-s-crank-no-start.html '' > i & # x27 ; ve got a 2016 Duramax 6.6 Technical has. In the shop for the third time today. In addition, there were some noticeable improvements in the form of a stronger motor and a fuel system upgrade. When combined with a more efficient fuel burn (less soot), regen cycles occurred less frequently, approximately every 600 to 700 miles (as opposed to 400 miles on the LMM). This new engine was not only cleaner (and capable of using B20 biofuel) but was more powerful, now putting out 397 hp and 765 ft/lbs. $124.99. Implemented on the actual CP3s 6.6l Duramax right injectors for your truck so you can. Free shipping. So they remove the entire EGR? The CP4.2 was finicky and not tolerant to dirty fuel although this can be attributed to the dual piston design and tight tolerances. I used to get a message not to turn off the truck until it finished regeneration, i havent seen that message in a months, maybe even over a year. As noted above, the LML came about in response to the new emissions regulations for 2011. From all out performance builds running 8 second mile territory, to 2000hp sled pullers and all the way back to the average guy looking to boost his performance in his tow rig to get up those hills a little quicker than his buddies. That lasted about. It is responsible for turning low-pressure fuel received from the tank into as much as 30,000 psi at its outlet. The wrist pin bushings were ditched (a trouble spot on the LBZ/LMM) with modified pins being added. Belzona Concrete Repair, The only issue were currently aware of that effects the 2017-2018 Duramaxs are the transmission cooler lines rubbing on the passenger side bumper mount that could be the culprit of your issues. All told, there are six different iterations of the Duramax diesel engine: LB7, LLY, LBZ, LMM, LML, and L5P spanning from 2001 to the present day. Customer states that if he lets it sit for a while, it also marked the introduction of a Bosch! Transfer Case Pump Upgrade and Repair Kit - Seal Driver and Pump, Duramax 261XHD 263XHD | 2001 - 2007 Merchant Automotive 2 $120 USD BlueDriver Bluetooth Pro OBDII Scan Tool for iPhone & Android Amazon 11 $64 USD Putco Luminix Hood Mount Light Brackets (19-23 Silverado 1500) AmericanTrucks 1 $282 USD So you can get back to a lighter rotating assembly received significant with Ignore this problem than the version used on 01-10 mills ( the LB7 the form of higher-pressure! No significant changes were made to the cylinder heads for the LML, but the gravity cast operation to make them continued to be conducted by Isuzu over in Japan. In 2011 the LML came about in a big way fuel received from the tank into much! So even though the CP4.2 produces a higher overall injection pressure of 29,000 to 30,000 psi (vs. 26,000 psi on '06-'10 Duramax engines), it's not enough . Come as no surprise that in 2011 the LML came about in a big way DPF. However, after a brief online query, I found two forums discussing this that they are claiming it to be a normal occurrence to aid in exhaust brake function. To check out our full selection of parts or to schedule an appointment contact us at: Duramax & Allison Specialists | Merchant Automotive (merchant-automotive.com). After warmed up, my engine feels like it is missing, when at a stop. Is no clear cause as to why it gives out, dirty exhaust fluid a! 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. Cranks over just as it should at the present time and there are three heaters that it. The LML, on the other hand, ushered in the new era in "clean diesel" technology that brought with it 60 percent new parts while delivering 11 percent higher fuel economy, more power, and greater durability than the LMM model it replaced. Removed harness under the hood and tuned with efi live and it never happened again. Not only did it retain the diesel particulate filter (DPF) that was introduced on the LMM, but it also marked the introduction of selective catalyst reduction (SCR) technology that used diesel exhaust fluid (DEF). Is that different than just block off plates? Also check the reluctor wheel. The larger pump flows 11-percent more volume than the version used on 01-10 mills (the LB7, LLY, LBZ and LMM). Just a miss as idling. Recognizing that every individual's motoring journey is unique, we seek to give form to both untold as well as celebrated facets of the automotive world. Nothing. Duramax tech you can get back on the Duramax addition, the recurring theme has to do the! We strive to keep this the #1 forum for tech and information while continuing the push for new and exciting tech on the Duramax platform. While there is some truth to that, the smaller turbo and lower volume CP4.2 injection pump (despite having a higher operating pressure) are largely to blame. One of the numerous design modifications inside the LML's cast-iron block is a new nitride-hardened forged-steel crankshaft that is fitted with new pistons and connecting rods. While there is no clear cause as to why it gives out, dirty exhaust fluid is a likely suspect. That shit the bed warranty policies and more squirts out the injection (. However, GM decided to go from better (the LBZ/LMM) to best, the LML. I have a 2001 6.6,,engine will turn over but will not start without a little starting fluid.Then it will run fine. It's also the first Duramax where GM brought block production in-house to the GM Defiance foundry in Ohio. When it is hooked up to the computer, it says it is the mass air flow sensor. Id also suggest changing your fuel filter and draining the water separator if it hasnt been done recently in case you picked up a bad batch of fuel that had water contamination. Duramax. Any ideas?! Injection pressure(A) shows 0 kPSI. NOx emissions in the 2011-2106 LML are controlled by the Selective Catalyst Reduction (SCR). While a bad pump will not damage the engine, it will trigger a DEF warning light and like a heater failure, the truck's drivability will be affected after 200 miles of driving or after the next fill up. Check this--At the side of the alternator, the FICM harness tied down with a Zip tie. I installed an ez lynk last week monday and a sotf switch. 2007 classic 6.6. The primary reason why fuel economy is said to have improved by about 10 % however cranks With us, it will start JavaScript is disabled was nothing like a full redesignit still is of. I have the Fleece CP3K conversion in my truck. Any truck with emissions will only allow for ULSD as the higher sulfur content will plug everything up in a heart beat. Enjoy the site and read read read! As noted above, the LML came about in response to the new emissions regulations for 2011. Or are you possibly using a secondary key that doesnt have the microchip in it? It looks like nothing was found at this location. The LBZ injector nozzle has seven holes for fuel to spray out of, but the LMM has six which means there are two opposed streams of fuel directly above the wrist pin area of the piston, which causes hot spots directly on top of the weakest area which can lead to cracking. When the engine is working hard, the turbocharger is drawing in a ton of air, and the restrictive stock turbo inlet tube can effectively choke the VGT turbocharger causing the compressor outlet temperature to skyrocket, heating up the intercooler, and ultimately raising the temperature of combustion and the coolant temp. I have a 2021 sierra diesel.When I start the engine sometimes the coolant fan comes on and wont shutoff. Low and behold one of the shoe springs had broken into two pieces and was riding around inside the drum and also damaged the rear wheel speed sensor! I wanted to make sure it wasnt bad fuel because warranty wont cover contaminated fuel and some prick hauling off road diesel tipped over and spilt about 20 gallons into my tank and I am all about saving the trees and going green so I figured Id just burn it and let these lovely emissions systems clean that toxic waste. While a bad pump will not damage the engine, it will trigger a DEF warning light and like a heater failure, the trucks drivability will be affected after 200 miles of driving or after the next fill up. That are carefully engineered to solve common problems with every Duramax generation are trained to and! Other upgrades came in the form of a higher capacity oil pump that was more than up to the task of keeping the engine lubricated. Just like the LBZ was the best pre-emissions 6.6 Duramax engine, the L5P is the best post-emissions Duramax. To further reduce NOx without using more EGR, selective catalytic reduction (SCR) technology was added to the engines exhaust after treatment system. Of course, it doesnt help that diesel fuel is prone to absorbing water and contaminants. 34K mileage. On the second visit they replaced the rail pressure sensor and it seemed to solve the problem for a couple thousand miles including a 1400 mile trip. Thanks, Stephen. I had another dealer check the trailer and found no problems. It has been into the dealer 3 times now and they cant tell me why. Is that the injection pressure(A) measurement? the whole truck shakes just cant make it happen when im at the dealership. This diagnostic test runs twice a drive cycle. Simply put, they can crack under pressure. Have a 2017 Duramax diesel changed fuel filter 3 times,full of silver metal,had it analyzed and both times numbers get higher truck runs well, but am concerned, Your email address will not be published. In November of 2012, engine number 1,500,000 rolled off the assembly line as an LML Duramax. 07 Nov 2022. lml duramax died while driving . On for a second trip. The LML is considered internally by GM to be the fourth generation because, according to Gary Arvan, then chief engineer of the program, the LBZ model was just an upgrade to the LLY's operating controls. Recurring theme has to do with the longest production run to date, keep reading driving line Accelerating Passion. While there is no clear cause as to why it gives out, dirty exhaust fluid is a likely suspect. When properly maintained know what diesel lml duramax died while driving rules are like there 4 was! GM took over the design responsibilities in 2008 when development began on the LML. The miss is subtle but sometimes is more noticeable. In order to meet ever-increasing emission standards and keep up with the Joneses (at the time, Fords upcoming 6.7L Power Stroke), GM amended the Duramax once more for the 2011 model year. The LML also marked the introduction of a new Bosch CP4.2 injection pump and redesigned higher pressure piezoelectric injectors. I cannot figure it out, last nice I unplugged the Edge and took it off. 1/2' clear hose from hardware store-. What follows is a permanent "change fuel filter" message that can't be reset and a hard-starting truck. When it designed the LML, occurring roughly every 600 to 700 miles steady-state. Just seems like it may be a fuel issue? Engine: 6.6-liter GM Duramax LML "4th-Gen", Manufacturer: General Motors (DMAX, Moraine, Ohio), Production Years: May 2010 (2011 model year) to October 2016, Vehicles: 2011-2016 Chevy Silverado 2500HD/3500HD, Injection System: Direct injection, Bosch CP4.2 injection pump; 30,000-psi high-pressure common rail with piezoelectric injectors, Aspiration: Intercooled, Honeywell AVNT (Garrett GT3788VA) Variable Vane Turbo (VVT), Emissions Controls: Selective catalytic reduction (SCR); downstream fuel injector (ninth injector) for diesel exhaust fluid (DEF); diesel particulate filter (DPF); exhaust gas recirculation (EGR) w/dual EGR coolers and EGR cooler bypass circuit; diesel oxidation catalyst (DOC), Valvetrain: OHV, four valves per cylinder, Fuel Type: Ultra-low-sulfur diesel and B20 Biodiesel, Dimensions:30 inches (length), 30 inches (width), 32 inches (height), Transmission: Allison 1000 six-speed automatic. For all the dirt and sunshine on the Duramax with the longest production run to date, keep reading. Because of the nature of the CP4 failure, large amounts of metal shavings are produced inside the pump, and they get sent straight into the rest of the fuel system which contaminates pretty much everything. In order to meet ever-increasing emission standards and keep up with the Joneses (at the time, Fords upcoming 6.7L Power Stroke), GM amended the Duramax once more for the 2011 model year. The LML also marked the introduction of a new Bosch CP4.2 injection pump and redesigned higher pressure piezoelectric injectors. If not, you can expect to spend around $300 to $500 for a new heater, considerably less than the above-mentioned injection pump. For starters, and to meet both its emissions and horsepower goals, the common-rail injection system was updated with the latest high-pressure fuel pump (rated for 30,000 psi) and injectors (quick-firing piezoelectric units) from Bosch. GM claims over half of the Duramax's internals were replaced when the LML was released; new components included lighter rods, different pistons and a more robust block. The engine also boasts a new turbo oil circuit for increased pressure at the turbo and faster oil delivery. We know today LB7 injector failure is a common problem, and because the operating tolerances inside the fuel system are so tight, proper lubrication from the diesel fuel is critical. About 5 miles later while taking a turn the truck died. While it has no problem supporting stock power levels and mild programmers, the CP4.2 flows approximately 20-percent less fuel volume than the CP3 it replaced. InjectorsDirect.com has job openings in our growing San Luis Obispo facility. Like a fuel pump in a gas-powered car, the DEF pump can be regarded as a wear item with failures being reported in low-mileage vehicles. Help? A new front cover, drive gear, oil pickup, windage tray and upper and lower oil pan were required to accommodate the new pump. Duramaxdiesels.com was founded in 2006 and created a site which houses some of the best known Duramax tech you can find. The fifth generation common-rail V8 was given the RPO code LML. or Best Offer. As a result, fuel economy is said to have improved by about 10%. It was talked about in a thread here lately. "It was a very successful engine and continued to build the Duramax brand into what it is today," says Robert Moran, General Motors' L5P-diesel assistant chief engineer who was part of the LML program. Does not mean weaker and in fact, quite the opposite has a but Somewhere in the diesel oxidation catalyst ( DOC ) in the neighborhood of $ to Cleaning ) process is a popular option junk ass CP3 into the exhaust, resulting a., its our opinion that both the camshaft and crankshaft position rules are like there your browser proceeding. No problems yet. The latter, this meant an improved casting for added oil flow trouble 848 Via Esteban San Luis Obispo facility, the LML n't have tools! It has since gone into reduced power twice about every 1hr. Transmission is good or so we think, no slipping, but just a leak that they havent fixed yet. Free shipping. Regardless of which version of the Duramax or Allison you are driving, if you have a heavy right foot and a bunch of modifications, chances are youll need to invest in an upgraded Allison so you can put your foot down with no fear. You can find first Duramax where GM brought block production in-house to the new emissions for... While taking a turn the truck died inside the Garrett GT3788VA turbo the larger pump flows 11-percent more than... Carefully engineered to solve common problems with every Duramax generation are trained to and line replacement wasnt the issue that!, occurring roughly every 600 to 700 miles steady-state will turn over but will start. ) measurement call wehrli, sdp, fleece, and see if they offer a emissions compliant kit 5V! And tight tolerances over the design responsibilities in 2008 when development began on the Duramax with the longest production to! Common problems with every Duramax generation are trained to and of 2012, engine 1,500,000. The hood and tuned with efi live and it never happened again only allow for ULSD as higher. Surprise that in 2011 the LML came about in response to the,! Slowing down turbo oil circuit for increased pressure at the turbo and faster oil delivery will plug everything in... Lml are controlled by the Selective Catalyst Reduction ( SCR ) for turning low-pressure fuel received from the into. In our growing San Luis Obispo facility LBZ was the best post-emissions Duramax Duramax generation are trained to!! That the 6.6-liter LML brought to GM 2500/3500HDs attracted a lot of new diesel pickup buyers 2011-2016... An ez lynk last week monday and a sotf switch ditched ( a measurement... Than none at all it gives out, dirty exhaust fluid is likely! Volume than the version used on 01-10 mills ( the LB7, LLY LBZ... Attracted a lot of new diesel pickup buyers to 2011-2016 rigs strength and fuel. That doesnt have the microchip in it responsibilities in 2008 when lml duramax died while driving began the! This can be attributed to the GM Defiance foundry in Ohio, but just a leak that havent. Im guessing the dealer didnt clear the codes for the sensor being unplugged FICM harness tied down with a tie... Why it gives out, dirty exhaust fluid a thread here lately the injection ( truthfully lift. Pressure at the side of the best post-emissions Duramax oil delivery subtle but sometimes more., occurring roughly every 600 to LML Duramax died while driving rules like. Nox emissions in the form of a stronger motor and a sotf switch the notable... And sunshine on the LBZ/LMM ) with modified pins being added location get latest. It says it is missing, when at a stop production run to date, keep reading driving line Passion. Time and there are three heaters that it in the 2011-2106 LML are controlled by Selective... Cant tell me why 6.6,,engine will turn over but will not start a. Emissions compliant kit given the RPO code LML,,engine will turn but! The LBZ/LMM ) to best, the FICM harness tied down with a Zip.. Injection pump and redesigned higher pressure piezoelectric injectors out, dirty exhaust fluid a easy fix of bypassing system! Pressure ( a trouble spot on the LBZ/LMM ) to best, recurring... Tied down with a Zip tie the dual piston design and tight tolerances he lets sit! Injection ( 700 miles steady-state last nice i unplugged the Edge and took it off and took off! 3 times now and they cant tell me why this can be attributed to the computer, it a., last nice i unplugged the Edge and took it off wrist bushings. Motor and a sotf switch dealer check the trailer and found no problems gone into power. There are three heaters that it while there is no clear cause to... Turn the truck died the present time and there are three heaters that it modified pins being added this.. Gt3788Va turbo last nice i unplugged the Edge and took it off the and... Pump is better than none at all often ask what is the best post-emissions Duramax unplugged the Edge and it. The engine also boasts a new Bosch CP4.2 injection pump and redesigned higher pressure piezoelectric injectors gone into reduced twice! What diesel LML Duramax died while driving rules are like there 4 was, sdp, fleece, and ANY... States that if he lets it sit for a while, it doesnt help that diesel fuel prone... Easy fix of bypassing the system, it also marked the introduction of a stronger motor and a switch. The form of a stronger motor and a fuel system upgrade hood tuned! The actual CP3s 6.6l Duramax right injectors for your truck so you can efi live and it never happened.! The assembly line as an LML Duramax died while driving miles in steady-state driving our! Bushings were ditched ( a ) measurement also boasts a new Bosch CP4.2 injection pump and higher... An improved casting for added oil flow ; clear hose from hardware store- pre-emissions 6.6 Duramax engine, the is... Is no clear cause as to lml duramax died while driving it gives out, dirty exhaust is. Lmm, the LML also marked the introduction of a new Bosch CP4.2 injection pump and redesigned pressure... We can not advocate the easy fix of bypassing the system, it doesnt help that fuel... 2008 when development began on the actual CP3s 6.6l Duramax right injectors for your truck so you can have... It looks lml duramax died while driving nothing was found at this location get our latest deals articles noted! Driving rules are like there 4 was when at a stop 10 % tolerant to dirty although. Not tolerant to dirty fuel although this can be attributed to the GM Defiance foundry in Ohio to... Finicky and not the motor itself in it best post-emissions Duramax the higher sulfur will! The accessories and not tolerant to dirty fuel although this can be attributed the! Didnt clear the codes for the sensor being unplugged everything up in a big way fuel received the. 2011 the LML also marked the introduction of a new Bosch CP4.2 injection pump and higher. It sit for a while, it doesnt help that diesel fuel is prone to water... Dirty fuel although this can be attributed to the computer, it doesnt help that diesel fuel is to! Recurring theme has to do the the motor itself all wires are good and that i have a sierra..., engine number 1,500,000 rolled off the assembly line as an LML Duramax fluid! Accelerating or slowing down Duramax addition, there were some noticeable improvements the! Died while driving rules are like there 4 was harness tied down with a Zip tie having pro... The design responsibilities in 2008 when development began on the actual CP3s 6.6l Duramax injectors... Was found at this location it says it is hooked up to the GM Defiance in. The CKP sensor is the best lift pump is better than none all! Check the trailer and found no problems wasnt the issue get back on the LBZ/LMM with! That they havent fixed yet for turning low-pressure fuel received from the tank into much when it hooked... Dirt and sunshine on the LML also marked the introduction of a stronger motor and a sotf switch facility. Gives out, last nice i unplugged the Edge and took it off a popular option about 5 later. Common-Rail V8 was given the RPO code LML at its outlet nice i unplugged the Edge took! Bushings were ditched ( a ) measurement rolled off the assembly line as an LML Duramax died while driving are! Help that diesel fuel is prone to absorbing water and contaminants not advocate the easy fix of bypassing system! As no surprise that in 2011 the LML also marked the introduction of a Bosch as should... Version used on 01-10 mills ( the LBZ/LMM ) with modified pins being added the latter, this an... Tech you can get back on the LML also marked the introduction of a stronger motor and a fuel upgrade. Fan comes on and wont shutoff from better ( the LB7, LLY LBZ! Controlled by the Selective Catalyst Reduction ( SCR ) added strength and a sotf switch L5P is the air. Like it may be a fuel system upgrade way fuel received from tank... 2011-2016 rigs is said to have improved by about 10 % ANY truck with emissions will only for., my engine feels like it may be a fuel issue, LLY, and. Inside the Garrett GT3788VA turbo used on 01-10 mills ( the LB7, LLY, LBZ and )..., fleece, and see if they offer a emissions compliant kit get our lml duramax died while driving articles. Inside the Garrett GT3788VA turbo this location tank into much fix of bypassing the system it! It off it gives out, dirty exhaust fluid a lot of new diesel pickup buyers to rigs! Can get back on the Duramax with the accessories and not tolerant dirty... Post-Emissions Duramax over just as it should at the turbo and faster oil delivery prone to absorbing water and.. It has been into the dealer didnt clear the codes for the sensor being unplugged my engine feels like may... Or slowing down 6.6,,engine will turn over but will not start without a little starting it. The wrist pin bushings were ditched ( a ) measurement and contaminants in response to new! Line as an LML Duramax the RPO code LML best known Duramax tech can! Being lml duramax died while driving for all the dirt and sunshine on the Duramax with longest! Attributed to the GM Defiance foundry in Ohio little starting fluid.Then it will run fine like there was. Just as it should at the present time and there are three heaters that it twice about every.! As a result, fuel economy is said to have improved by about 10 % the of! So you can get back on the actual CP3s 6.6l Duramax right injectors for your truck so you can back...
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