If the 4th cylinder lifter has failed, would driving it damage the engine? I have a shop 39 yrs . Any thoughts or suggestions would be appreciated. Carbon Build-Up in the Intake Ports. Open to suggestions about best course of action. Then I guess I have to spend a bunch of money and get the delete kit. I have always loved Ford and Chevys , I dont like this Vehicle not one bit, starring shaft has to be lubed or it whines, front A arms has done been replaced, tapping in motor, leaf springs has been lubed, retorqued, put completely new leaf springs back in on the rear , grease all down from rims to body of truck, you have to clean often,console shakes as if milk shakes in console which later they also put rubber bushings in front of coils of shocks ( front end) .You lock it down in 44 it s metal to metal , As of now Im at 32,000 done gone threw all the arbitrator laws depending on how it goes? Thanks. Chevrolet 5.3 Engine Issues and Recommendations CHANGE YOUR OIL!!!!! 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). Theyre also notorious for bad cam tower oil leaks. [], [] as the LS engine familys hybrid engine in trucks and SUVs. With the AFM tuned off, it shouldnt be trying to switch over to four cylinder mode. Billy, there is some interesting trivia here on the L92. please respond with your opinion. The oil collapses the plunger inside the lifter. PDF GM LS AFM Deactivation Lifter Issues - Melling I don know what else would cause the surge, but Id research the misfire code and see which cylinder is problematic. Now I get 24 to 26 with deactivation locked out and full power. The engine has flex-fuel capability. 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. The materials used in the engine were [], I have a 2018 GMC with the Eassist and AFM My 2002 I had over 298K on it with no engine related issues. It was in the late 70s or early 80s and it was a POS, Your memory serves you pretty well I too have the same nightmares lol. https://www.cargurus.com/Cars/Discussion-t30884_ds822284. AFMis good for gas mileage and can be 5-7 percent more fuel-efficient under certain conditions. Replace the cam or do the delete kit? the extra oil isnt needed. This new lawsuit is essentially identical to the previous. I just bought a 2018 Silverado. I always have done my oil changes on time, not sure about the people who owned it before me though. Will this AFM DISABLER damage anything???. I did noticed the oil consumption but it was rare that I would have to add oil. After all we bailed them out of bankruptcy. Chevy 5.3 Engine Problems Are They That Long-Lasting? - Motor Verso Our patented technology is the only product that will disable Active or Dynamic Fuel Management without reprogramming the factory ECU. They layed over night in engine oil before instalation. 2017 5.3 Liter Chevy Engine Problems: Be Aware of These 4 Issues! a little burning oil is a minor thing, my main concern is avoiding a multi-thousand dollar repair needed to the motor. If thats the case, Summit Racing has dedicated truck cams that will increase power through the rangebottom to topbut the meat of it is in the mid-range where your engine spends the most time. When we removed the oil pan from the new block, we noticed a metal shield covering the bottom of the block. Everything was fine for two weeks, ow customer complains s it same noise it made as before. Weve written some articles on the various Vortec engine upgrade paths, such as this one on LQ4 and LQ9it discusses some of the better options for choosing a cam intended for use in a truck. [] 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. The tune is the best bang for the buck outside a cam swap anyway and what Id recommend. I recently took a long trip and it burned 1.5 quarts of oil. In October of 2010, GM added a deflector (p/n NAL-12639759) to keep oil from being sprayed directly on the rear cylinders. 5.3-liter Chevy Engine Problems: What Should You Look Out For? Dod is the biggest failure sence the 8-6-4 caddie in 1981. 2019 Chevy, GMC Trucks Get Smarter Cylinder Deactivation - Car and Driver . I also have 08 Burb, but have different symptoms (high oil consumption, blue exhaust smoke at start, and now a really rough start after sitting overnight). You will be placed in derate if the ECM does not see the correct resistance from the ATF intake. Teflon coatings does not last. I guess what Im really trying to ask is,, are there any cons/disadvantages to installing the AFM delete Electronic module? Active Fuel Management (AFM) is a trademarked General Motors technology that improves gas mileage by shutting down half of the cylinders under light-load conditions to reduce fuel consumption. Interesting that gm still hasnt gotten the bugs out of their Volt and now their 2nd attempt. Then again, it should have never been controlling those solenoids. The collapsed lifters will not engage the pushrods and both valves remain closed. No other truck my ass .lol my 99 silverado 1500 with the junk LR4 4.8l and 320k miles 9n itgets 21mpg all day long with 93 octane gas in it. I am a long time GM fan but after reading how they messed up the 5.3 ( I had a fantastic 2003 Z72 off road) Ill look else ware for my next vehicle. As long as a lifter hasnt started to fail, you can get by with a less-expensive disabler as preventative maintenance. Next day, fired it up to take the the junk yard and it ran great. Chevrolet Silverado 2014-Present: Common Problems He used seafoam and changed to synthetic oil. Cylinders two, three, and eight are all similar in cylinder deactivation. I have also heard that the oil pump is to be changed and I have also heard that it does not matter. You can reuse the original valley cover OR use a non-AFM valley cover, leave the harness connected, and tuck the solenoid pack away. Shame this happened. 2 15 with 5.3 Sierras both with 100k and Hi Mike, the metal shield you noticed is probably the windage tray. 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. Did not help. whith a disabler. Pulled the inntake and replaced valleypan With all the solenoids. Getting 20 mpg in town and 24-28 mpg highway and love the truck now with these mild tweaks. Should I buy a Diablo AFM disabler to prevent the new block from dropping to 4 cylinder? Just recently, GM announced a temporary closure. Verified over hundreds of trips, makes no sense. Thanks. In 2010, GM added a deflector (p/n) NAL-12639759 to redirect in into the pan. Service manager said nothing else needs to be replaced because the engine has a Teflon coating. Because its not just GM that have engine problems. Chevy Silverado V8 To V4 Problems - Tools Bible I would say maybe 5% of my customers keep up on their oil changes. Take a look at what bmw did in its R1250 bike. I recently bought a low mileage 2013 Silverado and the lifters collapsed. Very expensive repair too! Will the plug in cause my truck to burn more oil or will it fix the oil consumption issue? As GM issued 13 updatesnone of which workeddealers disabled the system on their customers' cars, leaving them permanently in V-8 mode. If you already own this engine you will need to deactivate the AFM system or even better DO NOT buy any GM vehicle with this engine. If you installed a factory truck cam, there shouldnt be any particular reason for it to be down on power. thank You so much! I know a few guys with Tundras. Any advice that you could offer would be great. Stop-start cylinder deactivation, direct injection, variable valve timing, thermal management, and continuously variable oil pump; are just some of the Silverado features of . Does cylinder deactivation affect engine life? - Quora Plus the 5.7 has its own problems with VVT reliability and the rest of the truck is flimsy junk. The AFM activation and deactivation is controlled by the Valve Lifter Oil Manifold or VLOM. However, the fuel savings are not always as much as expected. The Hit and Miss Nature of Cylinder Deactivation Systems It prevents the computer from switching over to four-cylinder mode. To do this, you need to leave the AFM solenoid pack connected to ensure no codes are thrown. Very confusing stuff out there. "The idea behind cylinder deactivation is that when you're cruising down the freeway and there's low load, the engine can turn off half the cylinders and in theory burn half as much gas. I want to put a AFM disabler in it what all do I need to have done. (Bought car 1 day before lifter died!) (Non-AFM engines have a smooth cover.). Its a CA EMMISIONS TRUCK. I am considering the same. Your email address will not be published. [] For more on that, read: How to Delete or Disable Active Fuel Management (AFM) on GM Engines. This is my second Avalanche and I never had any issues with either of them. You mentioned that it will shoot oil into the pan and on the cylinder walls possibly causing some oil consumption So i have a running vehicle and my only concern is making it as reliable as possible, should I disable the AFM or not?? The LH6 in 2005-06 was a little different than the one used in 2007-09, but both had AFM. Engines withAFMalso use a special camshaft, a high-volume oil pump, and a pressure relief valve in the oil pan. A 17 with 5.3. http://www.autoserviceprofessional.com/article/91652/ticking-gm-v8-lifters-and-dtc. There are no changes in the valves or the springs. 2011 Chevy Avalanche LTZ. Most of all, my concern is reliability. All these comments on the 5.3 are blowing my mind!!!. Love the truck. Remembered that after I bought my Tahoe. I didnt even think about AFM until I got to drivee it on the highway and encountered the 4 cyl syndrome. If AFM has been deleted, its common just to use a Dorman drain plug (m14 x 1.5) to remove the pressure relief valve entirely. My ignition lock cylinder is completely stuck in lock position with the steering wheel locked as well. NOT GOOD!! I bought a new 2017 Cadillac CTS back in January 3.6L V6 with 8-speed trans. . A 17 with 5.3. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. Where can I buy a bolt to replace this relief valve ?? I speak from some experience. The problem I am facing is that I want to drive this vehicle for at lease another 77K and do not want to drive my vehicle with this AFM issue. Now it appears GM and their handlers want to push the electric market with throw away junk that is mechanically weak . This should be added to your earlier model if you experience oil consumption. what deleter (if thats a real word) have you heard good things about. There is no way cylinder deactivation and the resulting temperate decrease, with sudden piston heat expansion when all cylinders are engaged, can't have undo wear and tear on the rings, valves, piston and bore. Once the lifter has been damaged, the cam is probably also damaged. Engine starts but is throwing a misfire on cyls 4,7. When cruising on the freeway (for example) in 4 cylinder mode and jumping on the throttle to pass or get out in the fast lane, there is CONSIDERABLE and annoying and dangerous lag, like 3 seconds, and this is a problem. The Definitive Guide to LS Engine Specs and LS Engine Upgrades, LS3 Engine Upgrade Guide: Expert Advice for LS3 Mods to Maximize Performance - OnAllCylinders, LS Engine Bore & Stroke Chart - OnAllCylinders, http://www.autoserviceprofessional.com/article/91652/ticking-gm-v8-lifters-and-dtc, Range Active Fuel Management Disable Device, LS9 6.2L Engine Upgrade Guide: Expert Advice for LS9 Mods to Maximize Performance - OnAllCylinders, LMG 5.3L Engine Upgrade Guide: Expert Advice for LMG Mods to Maximize Performance - OnAllCylinders, L59 5.3L Engine Upgrade Guide: Expert Advice for L59 Mods to Maximize Performance - OnAllCylinders, L76 Car Engine Upgrade Guide: Expert Advice for L76 Car Engine Mods to Maximize Performance - OnAllCylinders, LH8 5.3L Engine Upgrade Guide: Expert Advice for L20 Engine Mods to Maximize Performance - OnAllCylinders, LH6 5.3L Engine Upgrade Guide: Expert Advice for LH6 Engine Mods to Maximize Performance - OnAllCylinders, LFA 6.0L Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More - OnAllCylinders, LFA 6.0L Engine Upgrade Guide: Expert Advice for LFA Engine Mods to Maximize Performance - OnAllCylinders, LZ1 6.0L Engine Upgrade Guide: Expert Advice for LZ1 Engine Mods to Maximize Performance - OnAllCylinders, What the New LT2 Mid-Engine Corvette Reveals About the Future of GM LT Engines, All the Torques: How Summit Pro LS Truck Camshafts Help Truck Owners Maximize Performance, LMF 5.3L Engine Upgrade Guide: Expert Advice for LMF Mods to Maximize Performance - OnAllCylinders, L98 6.0L Engine Upgrade Guide: Expert Advice for L98 Mods to Maximize Performance, LQ4/LQ9 Engine Upgrade Guide: Expert Advice for LQ4 & LQ9 Mods to Maximize Performance - OnAllCylinders, Range AFM Disabler Reviews | Range Technology AFM Disabler 2019, LS3 Engine Upgrade Guide: Expert Advice for LS3 Mods to Maximize Performance, LM7 5.3L Engine Upgrade Guide: Expert Advice for LM7 Mods to Maximize Performance, LS4 Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More, L76 6.0L Car Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More, L96 6.0L Engine Upgrade Guide: Expert Advice for L96 Mods to Maximize Performance, LC9 5.3L Engine Upgrade Guide: Expert Advice for LC9 Mods to Maximize Performance, LH6 5.3L Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More, LZ1 6.0L Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More, Chevy 4.3L Vortec Common Engine Problems - Vortec 4300 V6, https://www.onallcylinders.com/2017/11/30/how-to-delete-or-disable-active-fuel-management-afm-on-gm-…, The 5 Most Common Chevy EcoTec3 5.3L Engine Problems, Chevy 6.0L Vortec Engine Problems - Common Vortec 6000 Problems, The 4 Most Common Chevy EcoTec3 6.2L Engine Problems, Gen 3 vs. Gen 4 LS Engines: How to ID Them (Video), Ask Away with Jeff Smith: Upgrades to GM LS 6.0L 4x4, LM4 5.3L Engine Upgrade Guide: Expert Advice for LM4 Mods to Maximize Performance, L33 5.3L Engine Upgrade Guide: Expert Advice for L33 Mods to Maximize Performance, Mailbag: Choosing an Engine Management System for an LS-Swapped '82 Olds Cutlass. If you installed a performance cam intended for a car, it may be bleeding off some low end compression. Install the AFM disabler now or wait until my warranty just about to expire to get this AFM issue resolved? also in the pan is another AFM oil filter near the external engine oil filter. I can literally drive from Seattle to Redding CA on one tank. It came back on last Wednesday starting with a flash. I have a 2011 Chevy Tahoe with the 5.3 Gen 4 LS (VIN Code 0) and I bought a CAM motion DOD/AFM delete kit, 3 bolt drop in CAM Motion stage 2 camshaft, VVT delete kit and finally a Diablo Predator 2 Premium for GM programmer. On one hand it has an aluminum block, which is nice. Per bulletin 10-06-01-0007b, 2007 L92 had first and 2nd design. The service manager that I spoke with said, GM states if 2 qts of oil is used between oil changes the engine needs rebuild. they are known to become plugged. They should let us the better mileage. The engine was not Flex Fuel (E85) capable and did not use Variable Valve Timing (VVT) [], [] TheL76like its LS2 siblingis a 6.0L, Gen. 4, aluminum small block engine that was used both in GM cars and trucks. With 44, its a enormous Jon to remove the oil pan. There are two ways to disable or delete Active Fuel Management on your GM or Chevy Gen IV LS or LS-based Vortec engineone is to install an AFM Disabler, and the second is to install an AFM Delete Kit. What can I expect with the AFM in place, or, with AFM disabled (not deleted)? I had an 82 caddy 4100 with alumn block and cast iron heads ,, Exploded in Philidelpha, Garbage.. It will show up as a misfire code in a cylinders 1,4,6, or 7. There are 5.3 cylinder deactivation problems that can occur. Toyota will be my next truck unless GM owns up and makes wright with consumers. module (ECM) will command the cylinder deactivation system ON to deactivate engine cylinders1, 7, 6, and 4, switching to a V4mode. Why cant u just unplug the solenoid on back of engine by oil pressure sensor? []. Told her that it would not last and that she needed to find a different way to get around. At least Dodge admitted they had junk transmissions in the early 2000s and picked up sales each. Happened once 1yr ago, truck was not used for a week and worked fine when i started it back up. He claims that GM used the same engine whether it was or was not equipped with AFM in this year and model? Do you think I can still disable AFM? This basically deactivates the cylinder deactivation system. You may want to update your post. I would appreciate it if you let me know how you make out. It is also known as Displacement on Demand (DoD) or cylinder deactivation. I ran 0W-20 no more the 5000 miles between changes. Didnt really notice a loss in power other than the surging, (wondering if thats the engine trying to switch between 4 and 8 cylinders). The engine also had 799 or 243 casting heads which are closely related to the LS6. If possible, will simply not using VVT provide a powerful,good running engine? I have a 2007 Gmc Envoy Denali with LH6 cant find a good LH6 engine but I found a 2011 LC9 engine w 52000 miles will everything plug up or what am I getting into? A bad lifter can be a minor repair if you get it fixed immediately after you hear an issue. Glad I did. The engine will switch to operating on fewer cylinders when cruising at a constant speed. He stated if I continued to exceed 4500 RPM it would blow the lifters out. Hello Keith, if your lifters are still in good shape, an AFM Disabler is a good idea. It's been an issue for a while but I've been getting past it by turning the key only to the off position instead of all the way back to "lock".