Will the plug in deactivater fix the oil consumption or will it cause more consumption? Toyota has their own problems. I have already dropped a lot of money on this truck (08 suburban). As a side note, the early ones had a 24x reluctor and plastic chain guide (good) vs. the later ones with 58x and the spring loaded tensioner (not so good). This lowers the cost of building it [], [] aluminum block engine. I would say maybe 5% of my customers keep up on their oil changes. It does seem that when they start goingthey go quickly. Do you think it would be wise to put a AFM disabler on a brand new truck to avoid engine damage? hi brian when you replace the lifters do you have to change the guides also?
The 5 Most Common Chevy EcoTec3 5.3L Engine Problems Truck has an active P0300 code and runs very rough. [] swaps come with an extra step or two thanks to the Generals fuel efficiency efforts (VVT and AFM). I just bought a 2015 5 3 17000 miles I was thinking about eliminating the 4-cylinder if I delete it with just the programmer will it hurt my motor? Todays computers are faster so it does work. Apparently all passkey III keys are not the same,, I bought one that said for 2006 impala assuming all pk3 would be the same, and I could not get it programmed in my saab 9-7,, so how Im waiting on ones that specially said for saab 9-7. hoping they will work. I got as high as 23mpg on the highway in my 89 K1500 with 350ci and a five speed manual. The older truck gets 19 mpg the newer truck with fuel management gets 14. Then had to drive the truck back to Tampa from Cheifland Fl. With 44, its a enormous Jon to remove the oil pan.
Active Fuel Management - Wikipedia https://www.amazon.com/gp/product/B00BR1R8N8/ref=ox_sc_act_title_1?smid=A359W9MWR50ZG1&psc=1. I speak from some experience. According to some experts, switching to cylinder deactivation reduces the emissions high somewhere between 4 and 10%, which is a huge percentage of saving the air from pollution. Dont want to make a move on a new truck or jump to a 2500 yet. 190k on the motor always ran AMSOIL full synth since new. Then changed the oil. 1. Why doesnt anyone make an aftermarket set of replacement AFM lifters that are the right length but DO NOT COLLPASE! Or not because it is the cast iron block and not he aluminum block? I went ahead and purchased a Disabler on Amazon, for preventing it happening in the future. Now im thinking of buying a disabler asap, am i in the clear to do so without the oil splashing problem? It also mentions a valve cover replacement with revised PCV valve design. Both #6 lifters only move when turning engine by hand, if you use the starter they stop moving. If you scroll back, you will find that it is recommended to change lifters and camshaft and looks some more. Hello! Vehicle has been serviced more regular than the manual calls for and the AFM has caused problem after problem with fouled plugs. Ive only put a straight pipe exhaust, intake, and a boost controller on it. It is currently at the dealer having a new long block installed under warranty. Brian, . Runs better than new now and no more oil consumpsion!! A 17 with 5.3.
The Hit and Miss Nature of Cylinder Deactivation Systems One the other hand, it came without AFM, VVT, or flex fuel capability. Getting 20 mpg in town and 24-28 mpg highway and love the truck now with these mild tweaks. Would you get enough power to drive at freeway speeds? The 2nd went with a conventional valvetrain.
Cylinder deactivation | GM Truck Club Forum For fun, he runs his 427-powered C5 Z06 in ECTA land-speed racing, at OPTIMA street car events, and at a mix of autocross, drag racing, and track days. Replacing engine due to issues caused by AFM. I have a 2014 Chevy Z51 [w/dry sump oiling etc.] Ill Never Ever buy another gm. I have a 12 wit 4.8 Silverado 75000 miles I can tell you for the past 2 years I changed out my LC9 5.3L fully synthetic oil every 3,000, even though Mobile Oil claims 10,000 miles or more. When you don't need the full power of the engine, it provides better fuel economy." Your email address will not be published. [] Here is a guide on how to turn off AFM: https://www.onallcylinders.com/2017/11/30/how-to-delete-or-disable-active-fuel-management-afm-on-gm-… [], [] Guide to disabling AFM: https://www.onallcylinders.com/2017/11/30/how-to-delete-or-disable-active-fuel-management-afm-on-gm-… [], [] Here is an article on how to deactivate AFM. It seems to me that the high volume oil pump should not hopefully cause premature wear but if it is pushing more oil through the heads than I guess the valve stem seals have more work to do. Everything was fine for two weeks, ow customer complains s it same noise it made as before. 1. I am having that done today on my 08 Suburban and its only costing me $225. Hello Keith, if your lifters are still in good shape, an AFM Disabler is a good idea. Having it fixed now, just curious Seems like a problematic design. Since the tranny oil worked, you should now change the oil, right? A tuner can often fix that as well by giving it some more ignition advance in these regions. Traded it with 180K miles and did not experience any problems. Pulled right valve cover an rockers on syl 6 dont move.
Does cylinder deactivation affect engine life? - Quora Keith, were happy to help. You will be placed in derate if the ECM does not see the correct resistance from the ATF intake. Loved the looks and interior and thought a I got a great deal at $6k even. A 14 gmc 5.3 Sierra 85000 miles If the lifter actually fails so that the mechanism wont release, it wont work. While it does still use the GM Active Fuel Management cylinder deactivation technology that caused a plethora of issues on the gen-four Vortec 5300 engines, it seems that GM has solved the issues related to excessive oil consumption. My tech just installed the engine, only to notice that he doesnt have anything to plug the AFM solenoid pack into. Would doing the disabler option once I get it back be the right one? Dave, I also have a 2008 LTZ avalanche with 106,000 I have the exact same symptoms at this point I just want to sell it will the disabler help remove the check engine light wont pass inspection with light on thanks for your help Chris. If a shop pulled a DTC code P0300 and found AFM to be the issue, it may not be too late to try the disabler. You can monitor the oil level on your dipstick for 3,000 miles to determine if the deflector or plug would be needed, but chances are you wont based on the TSB. I recently bought a low mileage 2013 Silverado and the lifters collapsed. Oil consumption problems can be caused by a number of factors, including low oil pressure, worn oil seals, or worn engine parts. Toyotas 5.7 is one of the biggest gas guzzlers among half-ton trucks. Given maximum engine power is not required during the majority of everyday driving, AFM works to deactivate engine cylinders when they are not needed, such as when cruising on the highway, thus. She drove it for another 35,000 and it went out again. Why have you not gotten a reply from Mr Nutter, Buying a Silverado 6.2L. Vortec 5300s featuring LH6 and LC9 engines are prone to failing spark plugs due to carbon build-up. I didnt have lifters fail, I had the 4 cylinders 1,4,6,7 have such blow by that my choice was a valve and piston job or a new motor. I have the towing package on my 13 Tahoe LTZ. [], [] Its a Gen. 4 5.3L iron-block engine, so youre getting the better intake manifold, connecting rods, and ECM. Only issue might be the oil consumption due to pressure run off and spraying of oil in crankcase? Dont follow just anybody I know where it originates but in todays world I found found it to be amusingly accurate. While the system sounded good, the microprocessors scrambled to activate, deactivate, and then reactivate cylinders as driving conditions quickly changed, causing the car to hesitate, buck, and stall. Now I learn about the cylinder deactivation issue and suggestions to add the Range Technology module to deactivate it. I have a 2008 Buick Lacrosse super that I am having a hard time finding a tuner or a tune shop that can turn off the afm. I tried the trans fluid in the oil. Ketil, let us know what you find out. How stupid do you have to be to whine like a welfare check cashing idiot when there are literally 3 or 4 different ways to totally disable AFM. Carbon Build-Up in the Intake Ports. The Oil pressure relief valve deflector added in Oct. of 2010 is small and its part number is NAL-12639759. I could just transfer over the AFM lifter cover, but it is really nasty on the bottom side & I do not want to risk damaging this replacement engine if it is loaded with debris from the lifter & camshaft failure. That might show up if you cut the filter and looked for debris in the pleats. I cant stand seeing customers continuously going thousands of miles over on the oil and wonder why theres problems. I have 217,000+ on it and it never fails meever!
Is Your 5.3L V8 Engine Eating Up Too Much Oil? We - GM Parts Online He used seafoam and changed to synthetic oil. Constant engine and transmission problems. The 1st design (built prior to April 1, 2006) was had afm components but wasnt connected. Anyway that horrible experiment was in the late 70s early 80s along with those converted Diesel engines..those like the 8-6-4 nonsense were just terrible failures. We figured we already had the intake manifold off to install the engine, why run the risk of MIL only to have to removed the intake manifold again without being paid. When we removed the oil pan from the new block, we noticed a metal shield covering the bottom of the block. I have a 2013 1500 with the LC9. Thankfull for any ideeas! Mine did at the exact same time. On June 4th you stated The vehicles affected were 2007 to Feb. 2011 AFM equipped engines (Aluminum or Iron block-L94, LZ1, L99, LC9, LH6, L76, LFA, LMG, and LY5) I am looking at purchasing a 2012 Tahoe with the LMG per the build sheet. My Chevy truck with fuel management can not touch my 2000 Chevy with out fuel management. Who knew? GM get a clue! Its job is to direct the flow of pressurized engine oil to the active fuel management intake and exhaust valve . Is there any potential down-side to doing this in other words, might this do more harm than good? It essentially turns your V8 engine into a V4 which saves fuel. Not sure what else it can be. There are so many more oil passages on engines these days. Replaced all lifters on passenger side as well as pushrods for even wear. Found that all passenger side cylinders are not firing. Sometimes it will do it all the time and other times can drive it for 10 miles and then it starts but doesnt do it constantly when driving. thanks brian love the info Im thinking of buying a ford now, I am going to buy a new truck in about a month it would be a Chevy but Dodge has lifter problems so they are out and Chevy has DoD problem.If they come out with Silverado without the DoD then i would buy one.But they arent so i will become a Ford man from now on, Have fun with that Ecobust motor & stretched timing chain .
If you think GM pioneered cylinder deactivation, guess again Oil 0w or 5w -20 It depends on the failure mode of the lifter however, certainly worth a try. [] 5.3L engines start in the $600-$1,000 range and go up to a little more than $2,000 for the 6.0L and 6.2L engines. How is that an improvement. Hi Mike, the metal shield you noticed is probably the windage tray. 330-630-0240. Thank you. I own a reputable repair shop. NOT GOOD!! Oil flows to the special lifters through theAFMtowers. As it turned out one of the cam bearings was failing and causing the cam to wobble (my guess) which messed up the AFM and probably some other stuff too. also in the pan is another AFM oil filter near the external engine oil filter. (Non-AFM engines have a smooth cover.). After a stint in the U.S. Air Force, Brian Nutter studied at the Houston, TX-based School of Automotive Machinists in 1997. 8000 grand for the repair mine was 1,700.00 to repair, I had a 2004 small block v8(4.8) 331,000 miles on the truck,it was the usual on the maintenance front axles,etc. Most of all, my concern is reliability. [], I have 2007 5.3 its a new motor this truck scares me 9000.00 these trucks are jokes If the 4th cylinder lifter has failed, would driving it damage the engine? AFM Sucks!!!
Chevy 5.3 Engine Problems Are They That Long-Lasting? - Motor Verso You can reuse the original valley cover OR use a non-AFM valley cover, leave the harness connected, and tuck the solenoid pack away. It is also known as Displacement on Demand (DoD) or cylinder deactivation. Brian, I repaired a 2012 GMC Yukon Denali as the AFM lifter on #4 I take failed. I would just have the AFM disabled (tuned out) then. 1981 Cadillac V 864. Pulled the inntake and replaced valleypan With all the solenoids.
Hi Brian please help, yesterday after ice fishing was climbing a hill back home and check engine light flashed. AFM works by deactivating half of the engines cylinders under certain circumstances to reduce fuel usage.
AFM/DFM Disabler - Range Technology Took the heads off again. This reduces expense when you build it [], [] intake, and a cable-driven throttle body, plus Im also installing Trick Flows VVT and AFM delete kits. When I first bought my newer truck with fuel management, the GM tech at the dealership told me; if I wanted the engine to live a long life keep the RPMs below 4500. I read something the other day which I found to be funny. Happened to me twice 2009 Silverado, finally deleted DOD and installed a performance cam and lifters. HELP, I have 2005 envoy that runs makes lifter noise then dies in about 30 seconds then I started it one day and it ran with little noise for 5 min started next day and it starts and dies again got heads off was told I could put ls 3 lifters in is that true or is there something else I could do thanks Duane. Looking forward to input from the forum, Thank you. Most will want to get rid of the AFM immediately. yep, you are 100% Right, I called a local saab shop and they filled me in, in 2005 the trailblazer and clones have DOD (displacement on demand), My next issue is getting extra ignition keys on the cheap. This may show as low oil pressure or code P0521 or P0523 and is a relatively inexpensive fix as well. The oil is baked on to every component. CHANGE YOUR OIL!!!!! There are so many moving components in an engine these days as opposed to the past. Pod. Bought an 07 GMC Yukon 5.3 with the AFM, 87k. Wed recommend a call to our partners at Summit Racing. No problems with any to this point. Here's what you need to know: 1. What makes you think it was a design flaw ? This is what I keep telling people. Yeh truck has 5237 miles on it [] for performance, LS9 engines didnt use Active Fuel Management (AFM), Variable Valve Timing (VVT), or Flex Fuel (E-85) technology. Cylinder deactivation works to save fuel, but it may not be for the reasons you think. whith a disabler. Plug the tuner into your GM vehicle's OBDII diagnostic port, and follow the instructions provided to update the engine control module's program The new program will make sure that AFM never engages. An electromechanical system deactivates and reactivates all 16 of the engine's hydraulic valve lifters, controlling valve actuation. We have purchased a used low mileage 6.2L as that is all the extended warranty company would pay for. If so what would the vin code be?
Cylinder Deactivation & Variable Engine Displacement - LiveAbout I am trying to prevent same issue. Last GM Ill ever buy unless its got a diesel. The oil pump is high volume, but there are a lot of people that dont change it and rely on the pressure valve to keep the volume manageable. It has the orings in place, that seals the towers. IMHO . But I can replace all of the other engine parts without doing the pistons and bearings so that is what I plan to do. We recommend taking the truck to a local chassis dyno tuner and talking with them about a reflash. All Cylinders. But after reading this thread, Im a little concerned about the long-term reliability. This will spray oil on the bottom of the cylinder walls which can cause oil burning, especially in high-rpm engines. Hello. will feel like a jerk asking the clerk at lowes to cut them again. The lifter seems to recharge whenever the truck sits for some time. I have a 08 6.0L out of a Silverado with an aftermarket oil pan that has no provision for a pressure relief valve. Thanks for the advice Brian! Put everything back together proper torque, gakets, valve seals, etc. How do you know if the lifter has failed? Below youll see references to the L99 as a result. [] For more on that, read:How to Delete or Disable Active Fuel Management (AFM) on GM Engines. So I researched and got an AFM disabler. Hi. They replaced all the lifters, said no other damage, problem lifters were on cylinders 6 and 7. Yes thats true. The valve itself is part number W0133-2574213. They dont so any better than domestics on mpgs. They learned that the oil level sensor was necessary and that we were supposed to have been advised that we needed to reuse the original oil pan. She had driven it for a couple of months that way. Im always sorry to hear when people run into issues like these. Everything else looked good. I had to replace them all and the camshaft as well. They have plastic casing, so you can imagine what will happen with aged plastic. I wear hearing aids, but I thought I heard more engine noises, but after checking the gas cap, the light went out for a week. I asked my local Chevy dealer, from whom I purchased the engine, to find out why the oil pan lacked the fitting. Im confused from the write up about the plug in. 2011 Chevy Avalanche LTZ. This is my project car and will be my drive (about 5000 miles a year). This new lawsuit is essentially identical to the previous. Seems like the AFM disabler device is working for a number of people including myself as the 5.3l AFM engine has inherent design faults. We recently purchased an 08 Suburban and noticed some shuddering around crusing speeds, usually 45-55mph and highway speeds around 75mph. A bad lifter can be a minor repair if you get it fixed immediately after you hear an issue. Dod is the biggest failure sence the 8-6-4 caddie in 1981.
GM Releases Valve Lifter Service Update For V8 Engines As long as a lifter hasnt started to fail, you can get by with a less-expensive disabler as preventative maintenance. There are 5.3 cylinder deactivation problems that can occur. Deactivating cylinders at light load forces the throttle valve be opened more fully to create constant power, and allows the engine to breathe easier.
2017 5.3 Liter Chevy Engine Problems: Be Aware of These 4 Issues! I did a delete on an 07 avalanche and no have no power, any thoughts on what might be going on? Cylinder misfires (most common sign) Rough idling, poor acceleration, loss of power Check engine light with engine misfire codes Air-to-fuel ratios are either running rich or lean The easiest way to tell that you have an injector problem is through the check engine light and engine codes for misfires. I told her to never pull the gadget out. As we were installing the sensors prior to installation in the vehicle, we noticed that there was no fitting on the oil pan for the oil level sensor. Next day, fired it up to take the the junk yard and it ran great. Corvette that does employ AFM. You will get codes thrown if the afm is physically removed without telling the ECM you did so. Have a lifter problem on my 2010 5.3 Silverado. Hopefully more is known by then. I was getting ~ 30 mpg, so I love that. So bad theyve been rated least reliable midsized truck by consumer reports for 3 years in a row. Many people find the four-cylinder sound annoying if their vehicle is equipped with a louder aftermarket exhaust. Pushing forward. Driving around with a bad AFM lifter is the fastest and easiest way to destroy an engine. Required fields are marked *.
Problems After AFM Delete And How to Solve Them? - Tools Bible The system uses solenoids to deliver oil pressure to control. Most of the complaints show up in the 2009 to 2011 model years. Teflon coatings does not last. Brian, I have been reading your article about the AFM. Ditto , never buy a throw away vehicle again is my recommendation and my fix . If I put my truck in manual 5, it doesnt try to go into V4 mode. This replacement engine has the same camshaft sensor plug plug, 5 wire like the AFM would use, instead of the 3 wire. 2 15 with 5.3 Sierras both with 100k and Easier said than done. I also notice that it doesnt go into V4 when it is cold. After all we bailed them out of bankruptcy. please respond with your opinion. Cost about $250, but it is not fool proof. I just bought a 2018 Silverado. http://www.autoserviceprofessional.com/article/91652/ticking-gm-v8-lifters-and-dtc. The LFA was upgraded with AFM and [], [] improvement over AFM, DFM has 17 different cylinder firing patterns and switches seamlessly between them to provide just []. Is this due to the AFM being shut off? It has 8,000 miles on it. However, the fuel savings are not always as much as expected. I call it active obama fuel management .A scam . There are no changes in the valves or the springs. The oil collapses the plunger inside the lifter. We chickened out though and just bolted the AFM solenoid plate onto the used engine. AFMlifters have a history of failing and oil consumption can be a problem. $8500.00 fix. I quites down to nothing after running for about a minute. I just got a 2013 Silverado extended cab 4X4 with 124,000 miles on it. The detergent. On the caddis it helped to relocate the computer inboard the passenger compartment to keep them cool helped . The materials used in the engine were [], I have a 2018 GMC with the Eassist and AFM Clean oil is crucial. .or something similar . I have seen more internal engine failures in the last 5 years or so than I have in the first 15 years in the business. It actavated the lifter? I have a 2011 GMC Sierra 1500 with the 5.3. Send response to tkrieg@cox.net. Having a hard time finding one .. I have a 2007 Yukon XL with the 5.3L and am planning to do this as my lifters have failed and it rattles loudly if it starts, and runs limp. I am worrking on a 2007 chev Silverado 6.0 engine, [] the L76 that was equipped with AFM and had a ribbed valley cover, the L98 cover was []. That inherently less smooth operation requires additional NVH dampening. I am trying to find out of this is true. I recently took a long trip and it burned 1.5 quarts of oil.