gm cylinder deactivation problems

We recommend taking the truck to a local chassis dyno tuner and talking with them about a reflash. Are you saying that I am in the clear by a year and issues fixed? I got as high as 23mpg on the highway in my 89 K1500 with 350ci and a five speed manual. There is a filter screen under the oil pressure sender that may be clogged and not getting enough oil to supply the solenoids. Cylinder deactivation works to save fuel, but it may not be for the reasons you think. I did a delete on an 07 avalanche and no have no power, any thoughts on what might be going on? 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. 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? 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 guess what Im really trying to ask is,, are there any cons/disadvantages to installing the AFM delete Electronic module? Does cylinder deactivation affect engine life? - Quora I have an 07 Yukon with over 180K. Im servicing a 2011 Chevrolet 5.3 with AFM. 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. The oil collapses the plunger inside the lifter. The LZ1 was upgraded with AFM and []. GM get a clue! Easier said than done. I couldnt agree with you less, yet I respect your opinions. I guess I might have to call a dealership or GM to get a definite answer on this one. []. bought at Brian Tooley Racing ! 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. There may be an ignition related issue on that cylinder. AFMlifters have a history of failing and oil consumption can be a problem. No other V-8 truck of similar weight can do that (except another GM with AFM). Id wait until the warranty expires then disable. It uses a M14 x 1.5 thread plug like Dorman 65217. Covers me to 100K. I loved this rtuck until this happened!! It has 8,000 miles on it. 1981 Cadillac V 864. I have no clue what to do now. $8500.00 fix. http://www.autoserviceprofessional.com/article/91652/ticking-gm-v8-lifters-and-dtc. Change your oil. Chevy Silverado V8 To V4 Problems - Tools Bible Some drivers want V8 power under their foot at all times. The Oil pressure relief valve deflector added in Oct. of 2010 is small and its part number is NAL-12639759. Thank you. Their tech guys have seen it all and may have some thoughts on this as well. Here are a few of the issues that you'll want to keep on your radar if you drive a 2017 Chevy or GMC vehicle with a 5.3L engine in it. I have 1999 Silverado with out AFM that gets 21 mpg and a 2008 with it that gets 14.6. Oil flows to the special lifters through theAFMtowers. When an engine is contstantly running on oil that is broken down, it not only wheres out components because of no protection. A 14 gmc 5.3 Sierra 85000 miles An AFM Disabler is an electronic device that plugs into the OBD-II port, under the dashboard. Any guidance would surely be appreciated. My point is that the engine likely on uses dod a small percentage of the time so can not really imagine that the delete causes any more issue than normal which may be the high oil consumption but do all of these engines with dod consume a lot of oil? Friend will send to me from Arizona. I got the AMF disabler anyway and so far so good. 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? I cant stand seeing customers continuously going thousands of miles over on the oil and wonder why theres problems. Ive been reading, with disgust and concern of the lifter/cam situation. 2017 5.3 Liter Chevy Engine Problems: Be Aware of These 4 Issues! This lowers the cost of building it [], [] aluminum block engine. I ran 0W-20 no more the 5000 miles between changes. Replacing engine due to issues caused by AFM. 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. Is the Pressure relief valve replaceable? 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. These trucks cost too much to have a terrible product. I speak from some experience. If doing that, the full blown AFM delete is about $1000 depending on how far you go (full overhaul or cam with lifters only). Didnt change exhaust nor tune so likely no change in power/torque. Your email address will not be published. One must anticipate this. 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. Install ls3 valley cover. NOTE: You can find engine specs and detailed engine upgrade advice for every LS and LS-based Vortec truck engine in one place: The Definitive Guide to LS Engine Specs and LS Engine Upgrades. Many people find the four-cylinder sound annoying if their vehicle is equipped with a louder aftermarket exhaust. The biggest problem is nobody changes their oil on time. I also notice that it doesnt go into V4 when it is cold. You will be placed in derate if the ECM does not see the correct resistance from the ATF intake. Jusy 3 weeks ago I quit driving it because of the lifter, but it worked fine when i started it back up. Now I get 24 to 26 with deactivation locked out and full power. I called my service station and they told me to get it in ASAP. AFMis good for gas mileage and can be 5-7 percent more fuel-efficient under certain conditions. Its not GMs choice to use AFM. 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. Because your Saab is mechanically similar to the Trailblazer, wed suggest that you are correct and no changes need to be made to the relief valve. They layed over night in engine oil before instalation. Its Chrysler and Ford. A lot more info with the ongoing GM 5.3l AFM engine issues on Cargurus. put tran fluid in oil for a day till lifter became active, had to change the fouled plug. Hi Grant is that disabler still working for you ? Im praying that my RangeTech buys me a few years. Yes, always change all the lifters at once. Would installing the Disabler solve this? (Non-AFM engines have a smooth cover.). GM Making New Trucks Without Cylinder Deactivation Due To Chip - Motor1 Basically rebuilt most of the engine while in the vehicle. do you fill to capacity anyways???? How to Fix GM's Cylinder Deactivation Problems General motors sent out a service bulletins to their dealers however, all dealers will not tell you about the bulletin. Oh,the throw away vehicle has 77,000 miles and has always had meticulous maintenance . Vehicle has 40k miles been maintained well and shows no signs of lifter concerns at present. Power will be sent to the rear axle via a beefed-up 4L60E [], Have a problem with 09 Chevy Number 7 cylinder lifters stops moving when truck starts. I contacted service manager in Gastonia, NC and he was kind enough to tell me the whole history of the problem.. EPA required better fuel mileage and less emissions and GM, Ford and Honda(V-6) came up with this failed AFM system. When you eliminate the AFM system, the extra oil is no longer needed. 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. 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. Shame this happened. Look for the following: TheAFMcover is called the Lifter Oil Manifold Assembly (LOMA). The early part of his automotive career included working for engine builders Scott Shafiroff and C.J. Have an 06 Yukon with 5.3, original engine had bad knock, was told it was lifters so had them replaced. Have misfire code and engine has what I would call a surge while driving. But if you dont like it. Loved the looks and interior and thought a I got a great deal at $6k even. Corvette that does employ AFM. Runs better than new now and no more oil consumpsion!! Run it and let it soak overnight. If someone didnt want to spend gas buy a Toyota. I have read synthetic isnt good for AFM lifters. Replaced all lifters on passenger side as well as pushrods for even wear. [] cherry on top is that it isnt saddled with Variable Valve Timing (VVT) or Active Fuel Management (AFM) found on some Gen. 4 engines. My 2013 GMC Yukon XL 6.2L is currently having a failed lifer replaced. When cylinders are deactivated, the number of crankshaft rotation increases between firing pulses. I read something the other day which I found to be funny. 5.3-liter Chevy Engine Problems: What Should You Look Out For? I recently bought a 2018 Silverado 5.3L with AFM. After all we bailed them out of bankruptcy. 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. I had to replace them all and the camshaft as well. is it still working good since you have done that with the trans fluid? Why cant you stop the send signals from the computer so that the solenoids dont open and the AFM system is never engaged? When you drain the oil at three to four thousand miles its still clean. In four-cylinder mode, they act like air springs and allow for smooth operation. Did Obama make them do this? I have a 07 Yukon with 180K and no issues what so ever. But it also restricts passages that the oil runs through. I am having that done today on my 08 Suburban and its only costing me $225. The 5 Most Common Chevy EcoTec3 5.3L Engine Problems 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. We were getting a code that the cam position sensor was not functioning properly. Learn how your comment data is processed. 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. How to Deactivate AFM, DFM, MDS, and Start/Stop To Prevent - Holley And consider using a higher grade of engine oil like Mobil 1 or Amsoil, etc.

Allergic Reaction To Olay Retinol 24, Primer Impacto Reporteros, Kankakee Daily Journal Obituaries June 2021, Yarnspirations Caron Cotton Cakes, Articles G