is it still working good since you have done that with the trans fluid? Replaced all 16 lifters due to collapsed lifter on CYl #4. I switched from gm to dodge in 1984, have had 3 1st gen Durango and 4 2nd gen Dakotas, all used, with impeccable reliability. I have 217,000+ on it and it never fails meever! module (ECM) will command the cylinder deactivation system ON to deactivate engine cylinders1, 7, 6, and 4, switching to a V4mode. I have ordered an ATM disabler and will be putting a can of Textron in the gas at the next fill up. I got as high as 23mpg on the highway in my 89 K1500 with 350ci and a five speed manual. 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. Just pulled it down in the garage there was no other damage , luckily. GM Dynamic Fuel Management Cylinder Deactivation Technology - GM Authority The service manager that I spoke with said, GM states if 2 qts of oil is used between oil changes the engine needs rebuild. The LZ1 was upgraded with AFM and []. 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. Would doing the disabler option once I get it back be the right one? Here's what you need to know: 1. put tran fluid in oil for a day till lifter became active, had to change the fouled plug. 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. The engine will switch to operating on fewer cylinders when cruising at a constant speed. We did take it apart to check for metal possibly being trapped inside, it looked like brand new. December 20, 2021 A GM lifter recall should allegedly be ordered for Buick, Cadillac, Chevrolet and GMC vehicles equipped with 5.3L, 6.0L or 6.2L V8 engines. I have read synthetic isnt good for AFM lifters. My concern is if I leave the non-AFM lifter cover in place & have nothing to plug the 5 pin AFM solenoid connector into, will I get a MIL? There are so many moving components in an engine these days as opposed to the past. Cost about $250, but it is not fool proof. the body is in great shape. Right now I have just over 77K miles with no lifter problems Knock on wood I am thinking of the AFM disabler. Chevrolet Silverado 2014-Present: Common Problems i have a 2007 suburban 6.0 and the number 4 intake lifter took a dive.i have already started to disassemble the engine as i plan on replacing all the lifters and reassemble the engine as i never had any other problems with it. Friend will send to me from Arizona. Removing ignition lock cylinder when it won't turn at all I have an 07 Yukon with over 180K. 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. Active Fuel Management - Wikipedia 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. The engine will operate on 8 cylinders in V8 mode during starting, idling, and medium or heavy throttle conditions. . So I did the job one more time. AFM/DFM Disabler - Range Technology I have a 2014 Silverado with a 5-3. Not sure which direction to go from here. 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 []. Why have you not gotten a reply from Mr Nutter, Buying a Silverado 6.2L. The lifter came apart and chewed up the lobe on the cam Im selling it I also told my friend at work when he asked me about my truck .I said Ill never by another GM ever. [] For more information on AFM, including a comprehensive guide on how to completely remove it from your engine, check out this article. A lot more info with the ongoing GM 5.3l AFM engine issues on Cargurus. I wouldnt trade my 2000 Silverado, 5.3 liter that has constantly gotten 20 mpg since I bought it 15 years ago, for a dozen of these new $50,000 POS. Im servicing a 2011 Chevrolet 5.3 with AFM. Just shut AFM off. Only issue might be the oil consumption due to pressure run off and spraying of oil in crankcase? Wed recommend a call to our partners at Summit Racing. Give the folks in Summit Racings tech department a call (330-630-0240) and they can work on a solution for you. They lasted one year with big problems. Ive heard the Brand name Range thrown around in other forums, This is how mine started outthen 6 months later on the highway the service stabilitrak light and flashing engine light came on. Oil consumption problems can be caused by a number of factors, including low oil pressure, worn oil seals, or worn engine parts. Covers me to 100K. Does the Pressure relief vavle ever go bad?? 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. Does cylinder deactivation affect engine life? - Quora The materials used in the engine were [], I have a 2018 GMC with the Eassist and AFM chevrolet - How does cylinder deactivation work? - Motor Vehicle No clue what to do. The L76 is an adapted version of the LS2, featuring new rectangle port cylinder heads and Active Fuel Management (AFM). A custom tune by a knowledgeable tuner with access to a chassis dyno will pay a lot of other dividends other on top of turning off afm and VVT. GM get a clue! Is the Pressure relief valve replaceable? Cylinder Deactivation (Active Fuel Management) General Motors Active Fuel Management engine control system has the ability, under certain light load driving conditions, to provide maximum fuel economy by deactivating 4 of the engines 8 cylinders. Would it be fine to go ahead with the AFM Disabler? Easier said than done. Run it and let it soak overnight. The 1st design (built prior to April 1, 2006) was had afm components but wasnt connected. AFM works by deactivating half of the engines cylinders under certain circumstances to reduce fuel usage. What type of ODBII gadget did you use? Replace the cam or do the delete kit? thx Brian, Knock on wood I drive a 2011 silverado 44 Ltd with the 5.3 AFM/DOD not tuned out or delete being used and have experienced no problems or any sign of problems for that matter juat rolled over 210,000 all original factory parts would you suggest I tune it out or juat let it ride I change my oil religiously and also use lucas products for all aspects of my motor. I pulled the head off, replaced the lifter and put the gadget in the ODBII for about $400 total. One alternative is to swap in one of the larger 6.0 non-AFM truck cams. It will show up as a misfire code in a cylinders 1,4,6, or 7. She had driven it for a couple of months that way. I always have done my oil changes on time, not sure about the people who owned it before me though. the vehicle has 120,000 on it and 30 to 60 psi of oil pressure never lower or higher. 2 15 with 5.3 Sierras both with 100k and This new lawsuit is essentially identical to the previous. Because its not just GM that have engine problems. 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. There is no light on my dash or anything that indicates the system is active or exists, so its very confusing, Im still not sure if my vehicle has it or not. From what Ive read new and low mileage engines with no issues is ideal to do a afm delete, tune, or use of a disabler. 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! I recently took a long trip and it burned 1.5 quarts of oil. With 40000 I call it active obama fuel management .A scam . I have a shop 39 yrs . Deactivating cylinders at light load forces the throttle valve be opened more fully to create constant power, and allows the engine to breathe easier. PDF Service Bulletin Bulletin No.: 20-NA-038 Date: March, 2020 It only has about 9k miles on it. HP tuners is not for someone like me that doesnt know how to use it and from what I read neither the range nor diablo plug and play device will work since the buicks pcm files are different than all other GM vehicles that came with afm because it was tuned in house at gms performance division. Disable the afm. Also I dont recommend doing this as you may be in violation of some emissions standard or manufacturers ethics code . I have the towing package on my 13 Tahoe LTZ. 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 ! It essentially turns your V8 engine into a V4 which saves fuel. Constant engine and transmission problems. 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 2nd went with a conventional valvetrain. im going to plug in a dissabler when im done to keep it V8 mode all the time. This is my project car and will be my drive (about 5000 miles a year). has 92,000 miles and was just told I have cam and lifter failure. Only thing I noticed with the oil consumption issue. Your email address will not be published. I can literally drive from Seattle to Redding CA on one tank. Now the problems back, I have 180k miles on it now. Chevy Silverado V8 To V4 Problems - Tools Bible Oil flows to the special lifters through theAFMtowers. Solenoids, new lifters also test voltage to solenoid pack all good their, After taking a $3.6h bath on the lifter/valve work and doing a little research, how can GM allow a problem like this AFM continue from 07 to present? [] for performance, LS9 engines didnt use Active Fuel Management (AFM), Variable Valve Timing (VVT), or Flex Fuel (E-85) technology. If you installed a factory truck cam, there shouldnt be any particular reason for it to be down on power. If you dont have VVT, you could use part number NAL-12561721 (LQ9) along with a 4-pole 3-bolt 2005 Corvette cam sprocket p/n NAL-12586481 to make it compatible with your ECM. And consider using a higher grade of engine oil like Mobil 1 or Amsoil, etc. Stop-start cylinder deactivation, direct injection, variable valve timing, thermal management, and continuously variable oil pump; are just some of the Silverado features of . I have a 2013 1500 with the LC9. If someone didnt want to spend gas buy a Toyota. Next day, fired it up to take the the junk yard and it ran great. Pod. Get this, rebuild is only rings and maybe lifters. I have 1999 Silverado with out AFM that gets 21 mpg and a 2008 with it that gets 14.6. I had #4 lifter stick and now i am looking at replacing the engine with a non-dod version. I used 1 quart of tranny fluid in the crankcase ran it for 20 minutes, no luck. A 17 with 5.3. Given that, would you recommend buying one of the OBD-II devices to disable AFM? 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. They layed over night in engine oil before instalation. Vehicle has been serviced more regular than the manual calls for and the AFM has caused problem after problem with fouled plugs. Many people find the four-cylinder sound annoying if their vehicle is equipped with a louder aftermarket exhaust. GM should recall every vehicle with this terrible design flaw! I service plenty of these vehicles with AFM, and the ones I have to open up the engine for repair because of a failure doesnt surprise me anymore. If you left the original cam in, the AFM cylinders will be down about 25 lbs. Please report back if you have any issues, but I think you are in good shape. Thanks. If you ignore it and keep driving, odds are you will destroy the cam as well. 50,000 miles. Heres what you need to know: An AFM Delete Kit is recommended when an AFM lifter fails or when doing performance upgrades. Why cant u just unplug the solenoid on back of engine by oil pressure sensor? If I were to put a 2006 5.3L in a 2007 Avalanche and buy the unit to plug into my OBD2 port would it work? A lot of drivers reported losing 2-4 quarts of oil in between oil changes. Last GM Ill ever buy unless its got a diesel. Does the disabler prevent the engine damage in the first place? Took it to the dealer and was told I had a collapsed lifter. I had purchased an extended warranty when I bought the truck new. 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. How to Delete or Disable Active Fuel Management (AFM) I had the same issue and had to have the AFM information deleted from the computer and the car tuned. As a side note, Range Technologies recommends removing the disabler between visits to the dealer as they will need to access the OBD-2 port. Ive been reading, with disgust and concern of the lifter/cam situation. I drive the same 320 mile trip every two weeks and drive the same route and full tank. Absolutely agree, but we all know GM cant afford to recall them all & definitely wont, gettin a Toyota, but first will go to GM dealer and ask to see a truck without AFM & when they say they dont have it Ill say See ya, I have an appointment with the Toyota dealer! Always had GMs never anything else till now. The 5 Most Common Chevy EcoTec3 5.3L Engine Problems 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. [], I have 2007 5.3 its a new motor this truck scares me 9000.00 these trucks are jokes The lifter seems to recharge whenever the truck sits for some time. The dealer in Rockhill, SC when asked only said they had not had a problem. Troubles begin with Bean-counters decide on what can be used for production and engineers who arent Gear-Heads. how many miles do you have on your engine? Gary, [] 3 engines didnt have AFM (Active Fuel Management) or VVT (Variable Valve Timing), so you dont have the expense of an AFM or VVT delete []. The system uses solenoids to deliver oil pressure to control. It came back on last Wednesday starting with a flash. [], [] way. I have a 2011 GMC with over 162,000 miles on it and it runs great! Don't even get me started on the shortened life of the cooling, starting and charging systems. . I have an 07 Yukon with 230k on the engine. They took the engine down today found so much damage inside they ordered a new engine from Detroit. This happened on a camping trip with my kids last friday night. Their tech guys have seen it all and may have some thoughts on this as well. []. Once I get it back, could I install the Disabler safely. 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. Getting ready to diy for $450. 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. There are so many more oil passages on engines these days. Cylinder deactivation works to save fuel, but it may not be for the reasons you think. Thanks for your help. Thank you. You will get codes thrown if the afm is physically removed without telling the ECM you did so. This may show as low oil pressure or code P0521 or P0523 and is a relatively inexpensive fix as well. Just had my afm lifter fail had to drive 500 more miles home on 7 cylinders in my 6.0 lt chev. http://www.autoserviceprofessional.com/article/91652/ticking-gm-v8-lifters-and-dtc. Im curious as to how much tran fluid you put in? All ready done valve job . The exhaust valve remains open during the intake stroke and closes just before BDC. I read something the other day which I found to be funny. If I put the Range module on, is that all I need to do, both now and long term? I had privilege to work on some of that garbage they never did work . But then she passed away from cancer. As GM issued 13 updatesnone of which workeddealers disabled the system on their customers' cars, leaving them permanently in V-8 mode. Diablo says yes but they do not provide tunes. WATCH THIS VIDEO https://youtu.be/1MJMf3nnQhQ. Can I (should I) also change to a standard volume oil pump? Stopped at nearest gas station and found I was a quart low on oiladded oil and lights eventually went off and luckily we made it the 5 hour drive home. Is this an issue only with GM SUVs and trucks, or does it include cars too? More information can be found in the GM TSB bulletin number 10-06-01-008g. How do you know if the lifter has failed? Some drivers want V8 power under their foot at all times. My question is: do I install the electronic disabler on the new engine to avoid future issues? Just recently, GM announced a temporary closure. Unplugged AFM engine only runs on 4 cylinders #2,3,5 and 8. My 2011 Tahoe has a LMG motor in it with a build date of May 2011. Fouls those plugs. I have no clue what to do now. [] 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 []. An AFM Disabler is an electronic device that plugs into the OBD-II port, under the dashboard. I just got a 2013 Silverado extended cab 4X4 with 124,000 miles on it. My 2002 I had over 298K on it with no engine related issues. also in the pan is another AFM oil filter near the external engine oil filter. Is this due to the AFM being shut off? Question i just bought a 2005 Saab 9-7 with 5.3 v8, (same as GMC envoy) which came with AFM, the car runs fine, so if i just install the OBDII electronic device, is it just as likely that my lifters will still go bad? I may just do that Vic. But it also restricts passages that the oil runs through. Active Fuel Management (formerly known as displacement on demand (DoD)) is a trademarked name for the automobile variable displacement technology from General Motors.It allows a V6 or V8 engine to "turn off" half of the cylinders under light-load conditions to improve fuel economy.Estimated performance on EPA tests shows a 5.5-7.5% improvement in fuel economy. Definitely dont want to do anything to fix one problem and create another. A 14 gmc 5.3 Sierra 85000 miles We were getting a code that the cam position sensor was not functioning properly. Service manager said nothing else needs to be replaced because the engine has a Teflon coating. Im confused from the write up about the plug in. This is what I keep telling people. Change your oil. I traded in a 2004 4.8 L with 256000KM on it that ran like a clock and never gave me a problem. I have already dropped a lot of money on this truck (08 suburban). Interesting that gm still hasnt gotten the bugs out of their Volt and now their 2nd attempt. I tried the trans fluid in the oil. We recently purchased an 08 Suburban and noticed some shuddering around crusing speeds, usually 45-55mph and highway speeds around 75mph. If I put my truck in manual 5, it doesnt try to go into V4 mode. So now at 168 thousand miles it still runs good but gets bad gass mileage. It prevents the computer from switching over to four-cylinder mode.

Selkie Puff Dress Dupe Plus Size, How To Sleep After Thread Lift, Can I Color My Hair After Radioactive Iodine, Danganronpa Text Box, Sample Complaint Car Accident Negligence, Articles G