Nicholas Turner Obituary, Articles G

Logic says that it should not as the ECM isnt programmed to use AFM, but will it see a lack of resistance from no solenoid pack plugged in? Is the Pressure relief valve replaceable? Below youll see references to the L99 as a result. Power will be sent to the rear axle via a beefed-up 4L60E [], Have a problem with 09 Chevy Covers me to 100K. The engine also had 799 or 243 casting heads which are closely related to the LS6. Im a little confused on the problems too, Im reading that the 2007 pick-ups with 5.3 really had bad oil consumption and plug fouling problems, but is the 2005 5.3 that came in the trailblazers, envoys, and sabb 9-7s the exact same design as these pick-ups and prone to the same failures? Ive only put a straight pipe exhaust, intake, and a boost controller on it. Are you saying that I am in the clear by a year and issues fixed? Its ribbed with solenoids on the underside. The engine is running on only four cylinders. Just pulled it down in the garage there was no other damage , luckily. The AFM activation and deactivation is controlled by the Valve Lifter Oil Manifold or VLOM. Im looking at the Range Disabler but want to make sure it is required/suggested/recommended/safe? Yes a poor design but a flaw ? What was happening to the first is slowly (or quickly in your case) happening to the others. I went ahead and purchased a Disabler on Amazon, for preventing it happening in the future. Install the AFM disabler now or wait until my warranty just about to expire to get this AFM issue resolved? The write up confuses me. As GM issued 13 updatesnone of which workeddealers disabled the system on their customers' cars, leaving them permanently in V-8 mode. I speak from some experience. After all we bailed them out of bankruptcy. I have ordered an ATM disabler and will be putting a can of Textron in the gas at the next fill up. If possible, will simply not using VVT provide a powerful,good running engine? The wife however found this deal on an Envoy Denali . If I had been able to push the issue and get the time, I would have done the full fix at first without the hassle. When they are locked into position, they wont wear further and cause issues down the road. Everything else looked good. The Tundra fares better but the frame has the rigidity of wet spaghetti and the 5.7 has had problems with VVT solenoids and the plastic timing chain tensioners. The Jury is still out on the Gen. 5s but the warranty could be an issue. Now it appears GM and their handlers want to push the electric market with throw away junk that is mechanically weak . module (ECM) will command the cylinder deactivation system ON to deactivate engine cylinders1, 7, 6, and 4, switching to a V4mode. in your opinion will this work, i really dont see any reason it wouldnt. This will spray oil on the bottom of the cylinder walls which can cause oil burning, especially in high-rpm engines. 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. Another option is to plug it entirely if the AFM is already removed. I just did the delete and replaced the cam as well. 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? We need availability of a replacement engine without the AFM. Since no air can get in or out, four cylinders provide no power. Why cant u just unplug the solenoid on back of engine by oil pressure sensor? Its a CA EMMISIONS TRUCK. Brian, I have a 2010 burb with the exact same symptoms and questions as Shawn please help! Call chevy.They should being paying most of that. 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. General Motors Active Fuel Management Cylinder Deactivation Technology Active Fuel Management (AFM), otherwise known as Cylinder Deactivation is a General Motors engine technology that. https://www.cargurus.com/Cars/Discussion-t30884_ds822284. All these comments on the 5.3 are blowing my mind!!!. That might show up if you cut the filter and looked for debris in the pleats. With 40000 The oil collapses the plunger inside the lifter. The pressure relief in the pan opens at around 45psi to prevent over pressurization of the vlom solenoids. Wed recommend a call to our partners at Summit Racing. Thats a tough call, if the warranty will cover itId let it run out. I only had 81k on the motor. Is this an issue only with GM SUVs and trucks, or does it include cars too? Have an intake and Borla exhaust. I told her to never pull the gadget out. When you don't need the full power of the engine, it provides better fuel economy." The LH6 in 2005-06 was a little different than the one used in 2007-09, but both had AFM. They dont so any better than domestics on mpgs. Just like Ram and their trash MDS system or Ford and their throwaway Ecobust engines. bought at Brian Tooley Racing ! It has the orings in place, that seals the towers. 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. I am trying to find out of this is true. Only thing I noticed with the oil consumption issue. 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. I plan on getting a tuner to disable the AFM. Does the Pressure relief vavle ever go bad?? Our 2013 yukon with 47k miles just failed. [], [] as the LS engine familys hybrid engine in trucks and SUVs. My 5.3 is. Cylinder deactivation works to save fuel, but it may not be for the reasons you think. But the problem at that time was the computer technology. No clue what to do. I have a 2014 Chevy Z51 [w/dry sump oiling etc.] Any guidance would surely be appreciated. 2011 Chevy Avalanche LTZ. Your email address will not be published. Never did strand me on the side of the road way. I would appreciate any feedback. There is a chance the cam lobe was stressed and started to deteriorate. Have a lifter problem on my 2010 5.3 Silverado. Had nothing but trouble out of it. 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 . Would really appreciate your comments on this point as really interested in an 07/08 escalade without or an 09 hybrid with dod. I am wondering the same thing. Its not GMs choice to use AFM. The biggest problem is nobody changes their oil on time. I can literally drive from Seattle to Redding CA on one tank. The engine will normally operate on 8 cylinders in V8 mode during starting, idling, and medium or . Your 1981 caddy was your fmu I got glue inside of it and it stuck the potentiometer for stochiometric if you get a new fmu or you pick the glue out of the potentiometer you can set it to stoichiometric and get a lot better fuel mileage as far as your truck why dont you look at the intake manifold I got a crack or a vacuum leak somewhere for gas mileage thank you truck service, Near 1981 its your fmu it has glue inside the potentiometer you have to either RNR it for a new one or pick the glue out of the potentiometer for stochial magic is the only variable resistor inside that you can turn with a screwdriver once you get the glue out of it itll read still kill metric just be careful and then you can set it properly with your own meter on your monitoring your O2 sensor and then on your Silverado thingy your 5.3 just check the intake manifold for lakes Ill get you a better gas mileage if you dont have any intake cuz theyre plastic and they crack and stuff like that other than that yeah thats it, Larry Jenkins, I have a 17 GMC Sierra 6.2 SLT, I got 25 to 27mpg regularly with 93 gas and cylinder deactivation. 2018 new truck has me really disgusted If I had checked this out better, there would have been one less POS Chevy sold last year ! 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?? I have a 2012 Chevy Avalanche. I wont bother with blocking the relief valve. Shame this happened. They layed over night in engine oil before instalation. Billy, there is some interesting trivia here on the L92. Its got a hundred forty-five thousand miles on it. Truck ran fine before that. 91 GMC Sierra K1500 F44 6.2 NA Plow truck with 7.5ft Leo Plow 94 K3500 CC DRW 6.5TD DE exhaust . I have an 07 Yukon with over 180K. She drove it for another 35,000 and it went out again. On the AFM lifters that dosnt work i have installed them With the oil hole Down! AFM works by deactivating half of the engines cylinders under certain circumstances to reduce fuel usage. Yeh truck has 5237 miles on it My ignition lock cylinder is completely stuck in lock position with the steering wheel locked as well. I did and they diagnosed it as being on Cylinder 3, not one of the cylinders that deactivates. On the caddis it helped to relocate the computer inboard the passenger compartment to keep them cool helped . Change your oil. Vehicle has 40k miles been maintained well and shows no signs of lifter concerns at present. 2015 SILVERADO 1500 44 crew cab with 5.3L engine: So two weeks ago with approx 70K miles, I had an odd noise when accelerating and then engine light flashing and riding rough. You may want to update your post. Brian, I repaired a 2012 GMC Yukon Denali as the AFM lifter on #4 I take failed. Im always sorry to hear when people run into issues like these. If you swapped in a LS9 cam, you will find it makes good power at the very top, but its actually down from 5,000 rpm and lower where the truck spends the majority of its time. Ive got about 6 to 8 psi of oil pressure after the engine gets warm and I have to stop at a traffic light. 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? Thank you again for the response. They lasted one year with big problems. Heres what you need to know: An AFM Delete Kit is recommended when an AFM lifter fails or when doing performance upgrades. Plus the 5.7 has its own problems with VVT reliability and the rest of the truck is flimsy junk. Its not possible to install them wrong? Service manager said nothing else needs to be replaced because the engine has a Teflon coating. He claims that GM used the same engine whether it was or was not equipped with AFM in this year and model? Question I have a 2015 Silverado and had a transmission go bad when I had it rebuilt I had the AFM/DOD turned off. 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. 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. it is the regulator guy! 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. Dont want to make a move on a new truck or jump to a 2500 yet. 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. Is this the shield you referred to in a past post? I asume low oil pressure cant make some of the DOD lifters to malfunction? (Bought car 1 day before lifter died!) Keeping the oil changes regular is important and its possible that a previous owner may not have been as diligent as you are. They may be able to find some of those missing ponies. Should I buy a Diablo AFM disabler to prevent the new block from dropping to 4 cylinder? Basically rebuilt most of the engine while in the vehicle. You are correct. Any problems to watch out for?Did you replace the VLOM? He used seafoam and changed to synthetic oil. []. All eight cylinders are now powering the engine. Perhaps a flaw by design would be a more appropriate description . Will the plug in deactivater fix the oil consumption or will it cause more consumption? AFMengines use special lifters for cylinders 1, 4, 6, and 7. Keith, were happy to help. My local mechanic suggested whatever I buy with an AFM he will send off the ECU to have the AFM flashed out. I guess they also went to aluminum blocks in 2007, not sure if that has anything to do with this issues thanks for the advice! Anyway, after some pushing and pulling I took it to the Dealer who sold it to me. A tuner can often fix that as well by giving it some more ignition advance in these regions. I ave noticed the point about excess oil spray. The cylinders are deactivated by means of a double-stroke lifter which is FAR more prone to failure than a standard lifter. A lot more info with the ongoing GM 5.3l AFM engine issues on Cargurus. All the time. AFMlifters have a history of failing and oil consumption can be a problem. what deleter (if thats a real word) have you heard good things about. 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. Because I want to. If you left the original cam in, the AFM cylinders will be down about 25 lbs. . I have a noise in the engine but it seems to go away when revved up. Regardless of the AFM solenoid being commanded on or off. The oil is baked on to every component. Is there any potential down-side to doing this in other words, might this do more harm than good? Replaced all lifters. I have a 12 wit 4.8 Silverado 75000 miles Can they be faulty? If doing that, the full blown AFM delete is about $1000 depending on how far you go (full overhaul or cam with lifters only). So I did the job one more time. Run it and let it soak overnight. It is being covered under warranty since I only have 72,000 miles on it. The Cylinder Deactivation system, known as the Active Fuel Management system by GM, shuts off some of the cylinders when extra power is not needed which improves fuel economy. also in the pan is another AFM oil filter near the external engine oil filter. I still get a P0336 code every once in a while but still good to drive around town. At this state, a disabler would probably do what you need it to do. AFM sucks Im paying for a truck that has broke down twice replace the cam and lifters and now its broke down again 105000 miles never heard of that in a 350 Chevrolet. I am having that done today on my 08 Suburban and its only costing me $225. I just took a long trip and it used 1.5 quarts of oil. This happened on a camping trip with my kids last friday night. The only problem is the extra spray on the cylinder models if a deflector isnt used and this can show up as increased oil consumption. Very expensive repair too! Why this happens is a more . What if the pressure relief valve is stuck OPEN and the oil pressure never gets up to where it needs to be? I phoned the dealer and gave the VIN number, told it isnt equipped with AFM. Cylinder deactivation--branded Active Fuel Management by GM--shuts off some cylinders when extra power isn't needed, to improve fuel economy. [] 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. The early part of his automotive career included working for engine builders Scott Shafiroff and C.J. [], [] rugged iron block 6.0L came with VVT, but without Active Fuel Management, which saves you the cost of an AFM delete [], [] The LH6 engine is a 5.3L Gen. IV aluminum engine that replaced the LM4 in 2005. Most of all, my concern is reliability. This really sucks. 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. 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. This valve is located on the oil pan rail and prevents excessive oil pressure from negatively impacting the AFM components. Ever since that which was Feb/March 2020 i get a intermittent rattle does not do it all the time and I am not getting any codes i.e. Install the disabler when you get your Yukon back and it will remain in good working order. It is currently at the dealer having a new long block installed under warranty. Lost number four [], I have a 2012 Silverado Z71 bought new. I just got new warranty engine and dont want this issue again? Now I know why there wa such a push to get older ,less efficient vehicles off the roads. [], I have 2007 5.3 its a new motor this truck scares me 9000.00 these trucks are jokes 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. I have successfully used a gadget that plugs into the ODBII. 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). [] 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. Mine did at the exact same time. It is a bad deal for sure.ive fixed a few best thing u can do is delete it in buy kit.no sense in fixing a flawed problem with the same flawed parts. 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 []. Accept i only have 60K on my truck and it hasnt recovered. Hello! 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. How about if they just let us have a manual transmission agains for fuel mileage? You will get codes thrown if the afm is physically removed without telling the ECM you did so. Hi Brian please help, yesterday after ice fishing was climbing a hill back home and check engine light flashed. However I do have 7 year bumper to bumper warranty that covers this problem if I start to get lifter problems over the next 2 years.. On the other hand if get the AFM disabler installed I am pretty sure that I void the warranty from what I read on the policy. I have 1999 Silverado with out AFM that gets 21 mpg and a 2008 with it that gets 14.6. Yesterday my motor (116,000 miles) felt like it went into limp mode when decelerating from 8 cyl to 4 cyl but it recovered.This is the second time that this has happened in 6 months so I think that I am on the slope. Im confused from the write up about the plug in. You cannot compare them to old 350s. Ditto , never buy a throw away vehicle again is my recommendation and my fix . Question is, since my 2004 ECM and wiring harness were made before the AMF came about will this motor work properly as a V8 or will I need to replace the lifters, cam, oil sensor, etc as the delete method mentions? Now Im here tring to figure out what to do. [] engines is that when VVT (variable valve timing) appeared and was later followed by AFM (which is Active Fuel Management, when the engine deletes four cylinders under light load) both of these packages drastically affect [].