Im confused from the write up about the plug in. I bought a new 2017 Cadillac CTS back in January 3.6L V6 with 8-speed trans. It also has an electrical connector on the back. Hello.
Problems After AFM Delete And How to Solve Them? - Tools Bible It has the orings in place, that seals the towers.
2017 5.3 Liter Chevy Engine Problems: Be Aware of These 4 Issues! [], [] 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. IMHO . I only have ~ 5k miles on it, and it hasnt been driven hard, so Im assuming the lifters are fine. Im always sorry to hear when people run into issues like these. Im praying that my RangeTech buys me a few years. Took the heads off again. Or not because it is the cast iron block and not he aluminum block? GM's Active Fuel Management (AFM) works under certain light load driving conditions to maximize fuel economy by deactivating 4 of the engines 8 cylinders. Since the tranny oil worked, you should now change the oil, right? A new class-action lawsuit has been filed against General Motors over alleged issues with its Generation IV 5.3L Vortec V8 engines. Now Im here tring to figure out what to do. When an engine is contstantly running on oil that is broken down, it not only wheres out components because of no protection. in your opinion will this work, i really dont see any reason it wouldnt. What the biggest reported problem with Chevy Silverados? Excess oil will be pushed out of the pressure relief valve into the oil pan.
Removing ignition lock cylinder when it won't turn at all changed oil , its all working now, but want to disable this sorry system. AFM works by deactivating half of the engines cylinders under certain circumstances to reduce fuel usage. The biggest difference between the Vortec engines that used to be found in Chevy and GMC vehicles and the EcoTec engines found in them now are the fueling methods. I have also heard that the oil pump is to be changed and I have also heard that it does not matter. Only running on drivers side cylinders. This system is the most effective way to disable AFM. Any help would be appreciated. GM should recall every vehicle with this terrible design flaw! []. the vehicle has 120,000 on it and 30 to 60 psi of oil pressure never lower or higher. I am leaning heavily on installing the AFM disabler. 4,7 plugs foul runs rough at idle. It has AMF. 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? Call chevy.They should being paying most of that. Should I buy one to disable the V4 mode? CAM motion says no just have to disable the AFM and VVT with a stock tune as the camshaft is not an aggressive camshaft but a drop in. In other words, the crankshaft and bearings were not visible. NOT GOOD!! [], [] LS Tech: How to Delete VVT or DisableAFM []. http://www.autoserviceprofessional.com/article/91652/ticking-gm-v8-lifters-and-dtc. 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. The older truck gets 19 mpg the newer truck with fuel management gets 14. Ive only put a straight pipe exhaust, intake, and a boost controller on it. My 97 k2500 suburban with a lightly modified 6.5L diesel gets 20ish. The exhaust valve remains open during the intake stroke and closes just before BDC. 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. I don know what else would cause the surge, but Id research the misfire code and see which cylinder is problematic. Installed them again, all facing upwards, will know tomorrow if that was the solution.If this is the cause i cant beleve why they arnt build so that it is impossible to install them the wrong way in the plastic holder.And altso that there was no warning or installation advice With the New lifters.If these are the only lifters in the Whole world that must be in Basically rebuilt most of the engine while in the vehicle. A 14 gmc 5.3 Sierra 85000 miles Oil consumption problems can be caused by a number of factors, including low oil pressure, worn oil seals, or worn engine parts. . It has 8,000 miles on it. 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. Is this the shield you referred to in a past post? 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. 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 []. of cranking pressure because the duration is longer on those cylinders to being with to offset the AFM lifter design. Only issue might be the oil consumption due to pressure run off and spraying of oil in crankcase? Next day I drove my car to work and was fine but when I left work all lights came back on and terrible noise in the hood.
Does cylinder deactivation affect engine life? - Quora Any advice that you could offer would be great. We chickened out though and just bolted the AFM solenoid plate onto the used engine. Put everything back together proper torque, gakets, valve seals, etc. Driving around with a bad AFM lifter is the fastest and easiest way to destroy an engine. Remembered that after I bought my Tahoe. I did a delete on an 07 avalanche and no have no power, any thoughts on what might be going on? Then it takes out the lifter again and again until you bite the bullet and replace the cam. 91 GMC Sierra K1500 F44 6.2 NA Plow truck with 7.5ft Leo Plow 94 K3500 CC DRW 6.5TD DE exhaust . Because I want to. 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. []. GM tried this on cadillacs about 20 years ago and if memory serves me correctly it was a disaster. I told her to never pull the gadget out. It came back on last Wednesday starting with a flash. Why this happens is a more . 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. Yes, always change all the lifters at once. Well, they move a couple of times after startup thats all.Asume its the same on syl 7 on the other side.Disconected the Connector to the solenoids, no difference. I speak from some experience. All eight cylinders are now powering the engine. There are no changes in the valves or the springs. I have no clue what to do now. Lost number four Did gm make a non-dod version of the 5.3 with iron block that would work in my application? 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. GM get a clue! Jasper makes aGM engine that deletes AFM & will warranty the engine to a 100,000 miles parts & labor .
Problems regarding Chevy 5.3L engines ticking noise and misfire. This new lawsuit is essentially identical to the previous. 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. I am going to do the full repair of the engine now, but not an overhaul (too hard to get at the pan). Hi. Now I get 24 to 26 with deactivation locked out and full power. Had similar problems under warranty, no telling what they rigged me up with at the dealer. Some drivers want V8 power under their foot at all times. Just like Ram and their trash MDS system or Ford and their throwaway Ecobust engines. I guess I might have to call a dealership or GM to get a definite answer on this one. My Chevy truck with fuel management can not touch my 2000 Chevy with out fuel management. Ive read at many websites that the GMCs envoys, Chevys and saabs did start to come with AFM in 2005 with the LH6 motor,It says here it started in 2006 on the saabs, then the pick-ups got AFM in 2007. Brian, I have the same question as Scott. Batten, followed by several years developing performance pistons at Wiseco Piston Co. Today, Brian develops performance parts for Summit Racing Equipment and is a regular OnAllCylinders contributor.
GM Releases Valve Lifter Service Update For V8 Engines Just had my afm lifter fail had to drive 500 more miles home on 7 cylinders in my 6.0 lt chev. The most common issue GM vehicle owners with AFM report is increased fuel consumption. Now I know why there wa such a push to get older ,less efficient vehicles off the roads. WATCH THIS VIDEO https://youtu.be/1MJMf3nnQhQ. Once the lifter has been damaged, the cam is probably also damaged. They lasted one year with big problems. Given that, would you recommend buying one of the OBD-II devices to disable AFM? GM switched over to the 4100 v-8 in 1982. 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. I would appreciate any feedback. I ave noticed the point about excess oil spray. Install the disabler when you get your Yukon back and it will remain in good working order. I have a 2011 GMC Sierra 1500 with the 5.3. I would say maybe 5% of my customers keep up on their oil changes. 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. If you installed a factory truck cam, there shouldnt be any particular reason for it to be down on power. You may eventually see a check engine light from a misfire code and the ECM dialing everything back to protect your engine. My tech just installed the engine, only to notice that he doesnt have anything to plug the AFM solenoid pack into. Was thinking maybe I could trick the ruck into thinking the engine was not warmed up, however, this might cause some problems for other processes, such as mix ratio and timing. Some guys have been able to use a tool through the top with the cover off to get it to release. Jusy 3 weeks ago I quit driving it because of the lifter, but it worked fine when i started it back up. misfire or anything. What if the pressure relief valve is stuck OPEN and the oil pressure never gets up to where it needs to be? We did take it apart to check for metal possibly being trapped inside, it looked like brand new. There are a few potential causes for Chevy cylinder deactivation problems, including oil consumption problems, harmful to the environment, sludge issues, and lower cylinder temperatures. Cant believe they havent fixed this in a decade. Changing the sensor didnt help. Is the Pressure relief valve replaceable? Where can I buy a bolt to replace this relief valve ?? Are you saying that I am in the clear by a year and issues fixed? 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). If i am successful locating a non-dod vin would i just need to have the ecm reprogrammed? I would rather stay a V8 full time than deal with AFM issues in the future. Now i have my mechanic trying to follow a YouTube video I saw with a guy and a rod and a hammer. But it also restricts passages that the oil runs through. More information can be found in the GM TSB bulletin number 10-06-01-008g. I have only put about 600 miles on it and noticed that the oil was a bit low and am hoping that it was that way when I picked it up. 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. Oil flows to the special lifters through theAFMtowers. please respond with your opinion. I am having that done today on my 08 Suburban and its only costing me $225. My 2013 LC9 just had #6 lifter fail, got a misfire code but the ticking gave it away. Change your oil. How long did it take? Unfortunately because of emission standards nowadays, manufacturers cant go back to those style of engines. Replaced all 16 lifters due to collapsed lifter on CYl #4. We had one for a company car in 82 and it never did run right from new but at least it didnt destroy itself.
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