2008 duramax loss of power Recently my 2008 GMC duramax has suffered a devestating loss of power, accompanied with a sound inside the cab that sounds like air coming through the vents. Jake Chevy / GMC Duramax 11-16 LML Forums. It feels like I Hello, I have a 2008 GMC Sierra 2500HD Duramax Diesel with about 55,000 miles on it. In this example the truc #PIP4526: Diesel Engine Fuel Line Repairs - keywords DTC hose kink loss P0087 P0093 P1093 pipe power reduced repair restrict restriction SES suction supply vacuum - (Nov 7, 2008) Subject: Diesel Engine Fuel Line Repairs Models: 2001-2007 Chevrolet Silverado Classic 2001-2007 GMC Sierra Classic 2007-2009 Chevrolet Silverado 2007-2009 GMC Sierra 2005 LLY Loss of power. the dealer originally said that the loss of power sounded like a fuel filter, After that, the first message about Reduced Engine Power came back on and stayed on. 5 MPG Diesel Power Challenge 2008 2002 LB7 Max'd Out 9. 6L Duramax has been having problems with the steering for a while. The times with no code its been 40-50. Seems to happen after motor gets up to temp. Here’s what you need to do: Disconnect the negative battery Recently the reduced engine power is more frequent. I have an 08 duramax. Save Share Like. Fuel filter goes to zero anytime and engine reduces power light comes on. 2008 duramax loses all electrical when trying to start Thread starter motobean95; Didn't the 07 and 08 have under hood fuse box connection issues in some cases causing an intermittent loss of power? M. My truck is a 2008 Silverado (Duramax 6. The truck rarely smoked but it has started smoking excessively. LMM sensor. get on the back roads and pull a hill and back to the loss of power again, so i crippled it home and parked it. 07. I bought it in June 2007 with 60,000km on it. Jump to Latest I have had problems with power loss in my rig every since i had my truck re flashed at the Dealer ship, i go into an incline of any kind and the power dropes. Power down is achieved by turning off the ignition key and waiting for loss of If this video has saved you as much time and money as me please give it a thumbs up, also if you need these parts please use the links provided below. the truck was just go into limp mode. 2016 lml random loss of power no codes. Jump to Latest 207 views 4 replies 3 participants last post by DMAXfirefighter Nov 21, 2024. 6l/Allison suffers a loss of power. I replaced the air filter, and cleaned the MAF sensor. Rather, it is an easy process that anyone with a little courage can do. truck was black smoking very heavily at wop (w Chevy / GMC Duramax 04. No engine codes as of now. 2008 GMC Sierra 2500HD SLE2 LMM 2WD Crew White/Ebony Denali Ultrasoft Leather Seat Upgrade 2001 Duramax Yukon XL 2500 4X4 3. Tigermania are you getting a throtle position sensor correlation "engine power is reduced" can't remember the code number think it was p2138 but sounds like you are having the same problem I was. I replaced the mass air flow sensor with a delfi napa part. Starter Relay - Power Circuit for Energizing the Starter Solenoid. 5-10 LMM Duramax Powertrain Lost power steering I hoped in my truck to take my kids to soccer but I had no power steering or brakes. Do you think this will be solved when I fix the rear brake line? I'm wondering if the hydroboost is taking tons of power away from the steering to allow me to brake reasonably even with the leak. zone lifted, 35s. 2008 GMC Sierra Crew Cab 4X4 (wifes) Zone lift set close to 4" 305/70/17's Hankook Dyna Pro RF-10 ATM. Research indictates a fuel problem, maybe a weak fuel pump or injector pump. As soon as it gets more than 1/3 throttle you can feel it defuel hard. Loss of Power + Black Smoke = ??? Jump to Latest 41 - 58 of 58 Posts. Around the beginning of 2014 I purchased EFI Live, and a 4" straight exhaust (DPF delete) from ATP. May 27, 2015 7 0 0. 5-05 LLY Forum. Sometimes there will be a mpg and power loss from a dirty MAF. Any ideas? Oh and we were on our way to missouri also 2008 Chevrolet Silverado 2500HD LT LMM Driving to work turbo spooling up then I hear a single POP then a gush of wind (like you would disconnect an airhose from a compressor) Driving I do have loss of power, and now it is giving me P0299. Here a When braking reasonably hard (don't forget the rear leak) I have no power steering. May 16, 2018 #8 One of the most annoying things that can happen when we are driving our vehicles is when we get the reduced engine power light. (Lml engine ) currently 137,050 miles. My 02 6. Explore Our Forums. It keeps getting a "reduced engine power" message on the dash, then it doesn't have any power, it's like putting a brick under the gas It was negatives when it actually flashed a code and went into reduced engine power. The vane actuator controls the position of the vanes inside the turbocharger to increase or decrease turbo boost based on engine operations. Hopes to make it home to complete a "fix". 4 posts · Joined 2012 Add to quote; Only show this user #1 · Jul 8, 2012. Save Share 2002 Duramax loss of power when Accelerating. Have not b read more #PIP4526: Diesel Engine Fuel Line Repairs - keywords DTC hose kink loss P0087 P0093 P1093 pipe power reduced repair restrict restriction SES suction supply vacuum - (Nov 7, 2008) Subject: Diesel Engine Fuel Line Repairs Models: 2001-2007 Chevrolet Silverado Classic 2001-2007 GMC Sierra Classic 2007-2009 Chevrolet Silverado 2007-2009 GMC Sierra 40 posts · Joined 2008 Add to quote; Only show this user #1 · Sep 19, 2010. I hope that this the same, tommorow i will check intercooler snap. Truck doesn't respond goes into limp mode. what does this sound like, a cp3 pump p2146 Power loss and knocking. 3 posts · Joined 2008 Add to quote; Only show this #1 · Jan 28, 2008. 3 posts · Joined 2024 Add to quote; Only show this user #1 · Nov 21, 2024. Hey all, stuck at work. I had the fuel filter Air filter and fuel filter changed, air induction system and intercooler checked for leaks, EGR valve removed and cleaned, mass airflow sensor removed and cleaned. i made it to the house and started looking over the truck, it threw these codes (P0128, P2454, P0193, P0652) and P064C this code has been off and on for years and i believe it relates to the glow plugs, not to worried about it. R. It also does this when downshifting to pass . 1 2 3. It starts right up, runs rough, smokes white, and has no power - won't even rev to 1400 RPM and barely can idle around the parking lot. it has 102,000 miles on it Now It will be just fine and then at highway speeds it will start pooring out balck smoke and loose power. I replaced the fuel filter thinking that was the problem, but that didn't help at all. (Traffic light or parked. Loss of power under load. MeganP2012 Discussion starter. They told me the power steering was going out at low speeds and I needed to replace the pump, Hey guys, a few days ago my 03 lb7 started acting up and lost roughly 50% of it's power. Putting petal on floor was eventually resulting in pumping black smoke and a "clearing" back to power. Loss of power and black smoke? Did you get 06 Crew Cab 4x4 Duramax LBZ PPE Standard Transgo Shift Kit AFE Stage 2 Air Intake: 23. When i press down on the gas to pass a car going 75, all i see is black smoke and hardly any response from the truck. I ran into this Duramax with no check engine light. 19 posts Friend with 2006 durmax is currently having problem with power loss when towing his heavy fifth wheel. I have a 2002 Silverado LB7 when going at any speed if I I have a 2005-LLY with 220,000 kms, truck has run perfect until now. Idles good, no check engine light, nothing shows up on the scanner, I have a block plate in, a aftermarket exhaust and intake. Save Share that can cause a loss of power. When I am accelerating from a stop, accelerating to go around someone, or getting on the interstate I lose power when I first start and when my truck shift up gears. 7rwhp, Banks 6-gun, Banks Monster exhaust, modified waste gate 2008 Harley Davidson Road King Classic. Jump to As of today, I'm experiencing a pretty significant power loss. On the level freeway Loss of Power - This is just familiarity with Duramax engines. I realized how horrible the steering in the 2008 was so I took it back into the dealership. Next day happened again, no power, white smoke, then black smoke, took about a mile then it cleared up and ran fine. Turns out I had a boost leak from my poor install of my intake horn. I changed it and reset to 100% fuel filter life and within a few miles it reduces power and tells me fuel filter life is 0%. I'm new to the duramax. Save Share 2008 duramax. I own a 2004 sierre 2500 duramax. Come join the discussion about modifications, towing, classifieds, troubleshooting, I have a 2008 Chevy Duramax 2500 HD with 146k miles, EFI Live tune by Idaho Rob, with the DSP5 switch, straight 4 inch exhaust from the down pipe back, and a S&B cold air intake. GM SILVERADO (2008) REDUCED ENGINE POWER FIX#P0641 SENSOR REFERENCE VOLTAGE "A" CPOSSIBLE CAUSES:FAULTY ENGINE CONTROL MODULE (ECM)ECM UBEC Test for power circuit of start relay results. Running 2% BioDiesel with Optilube XPD,TTS dual lift pumps with Nictane Aux I drive a 2005 GMC DURAMAX 6. 11-16 LML Duramax Powertrain Major Power Loss. Lots of fluid in both brake and steering reservoirs. 04. Most of the time, reduced engine power doesn’t make commuting home possible since the max speed your GMC Canyon will reach is not going to be enough to keep you safe on the highway. 6l Duramax Automatic 4x4. 9 posts · Joined 2015 Add to Loss of power and black smoke. 12559 posts · Joined 2009 911 Problems Forum. If you drive it "normal" it does just fine. the PO128 has been coming Chevy / GMC Duramax 07. ~Sold 02 Red Chevy Duramax LB7, EC, LB, ZF6 4x4 480RWHP & 1010RWTQ ~Friend bought it so its still running around. Bank’s Power offers a 2006 LLY/LBZ Duramax Techni-Cooler Intercooler Kit as well! If you want cooler, denser air for your late model LLY Duramax, Loss of power during full throttle driving; P0087 DTC (Code) Over time, the belt can wear out or become misaligned, leading to a variety of issues, including loss of power steering, dimming lights, or a malfunctioning air conditioning system. of relativity trouble free driving I am experiencing a loss of power with no shown codes. R 2008 GMC Sierra Crew Cab 4X4 (wifes) Zone lift set close to 4" 305/70/17's Hankook Dyna Pro RF-10 ATM. I bought a new MAF sensor and also Vehicle: 2014 GMC 3500 6. Jump to Latest 39K views 14 replies 7 participants last post by smokinlmm Jul 10, 2012. Another area you can check for reduced engine power is the turbocharger, especially if you’re getting codes like P0046, P2599, and P003A. Sounds almost like a exhaust leak when under power. I commute a distance to work daily and have use about 1/2 tank but now seem to use almost 3/4 in the same period. The after a little bit, the code goes away and it seems to run fine. 0 Reply. 2008 Duramax LMM SLT ~ 93K miles Leveling kit, 285/70 R17 Quadzilla DPF Delete - 50 HP tune K&N air filter . 2008 Duramax Engine Power Reduced (Limp Mode) Jump to Latest SOLD-2008 GMC 2500HD Duramax CCSB SLT, leveled, on 20's, EFI by ATP My Build Thread. It had not thrown any codes and its really starting to piss me off. It has been black smoking and huge loss of power. I think that if you could map demanded fuel pressure vs actual, Most of the information I provide relates directly to my 2008 LMM - Your truck may be a little (or a lot) different 2008 Silverado LT, Immediately after some work done to my '06 Duramax at a local service garage, I noticed a loss of power during acceleration, and the check engine light on. 12v+ on both sides of 175amp fuse. Step Since 2001, Duramax has been a powerhouse in diesel engines. Help? Synthetic Fluids Mike L tranny cooler) 2008 Towing Mirrors with Leveling MOD, PCV reroute, Fumoto Valve, Mad Jacks fuel fiter access door. 73 451. 18259 posts · Joined 2008 Add to quote; Only show this A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. Ron Nielson. Pulling a trailer or not, occasionally if you get on it going uphill, it'll go into reduced engine power mode. 1 '08 Duramax 6. Skip to content. I am NOT a mechanic. Almo Don't notice smoke or miss. It appears as soon as comes up to temp and I come to a stop. They’re incredibly popular and can be found in a range of General Motors vehicles. 6) For the past few days my truck has had a loss of power and indicates (reduced engine power) The problem is intermittent. Pulling a 3000lb empty trailer going 70mph down the Both battery grounds are parallel, so both grounds would need to fail for total power loss as the truck can start off a single battery. 5-05 LLY Duramax Powertrain 05 LLY losing power a Banks IQ and 6 gun tuner and was out driving my truck to let the transmission learn the shift patterns with the extra power of the programmer. fasted72 Discussion starter. motobean95 New member. Symptoms Of Fuel Injector Issues I have a 05 stock duramax with k&n air intake. If your Canyon has gotten this reduced engine ok i have a 05 gmc with the lly duramax in it. "Aut viam inveniam aut faciam" Derek Still black smoke and loss of power under acceleration. 5-10 LMM Forums. 71@141+MPH on #2 fuel only, MPI Twins. Jump to Latest Chevy P0098 intake air temperature sensor circuit high. Reply. Display reads "Reduced engine power" and will not rev up at all! I have the battery disconnected now, but did it earlier for about 5 minutes with no change. ECM Control Circuit is Power from Fuses, and Ignition Switch Position, Powering ECM Inputs to energize the Starter Relay Chevy / GMC Duramax 04. Going up a little grade, I noticed my truck had lost a lot of power, would barely go up a little grade, at about 40mph. Navy 2000-2008 99 3500HD LBZ/4L85E C&C hotshot 7. Upon heavier acceleration, the air sound gets louder. I took it back to the local mechanic and he said the Mass Air Flow sensor is giving a code. Today each time i start up it prompts "Engine Power is Reduced" It feel like it has a governer on it and will just crawl up to about 40 mph. Loss of power. jpg. Step 3. Jake creates a ton of GM related content for the 8020 Media YouTube channel and specializes in Duramax and Vortec information but has a wealth of knowledge across I have a 2008 Nissan Titan that’s faster. Step 1. I just changed the fuel filter and new air filter was installed. We hope now you know what is does it mean, reduced engine power means on a Chevy Duramax and 76 posts · Joined 2008 Add to quote; Only show this user SB, Duramax, Allison, 4WD, bought new April '05-times up - off warranty, now 120,000 miles, LBZ mouthpeice, Blocker Plate & Unplugged EGR, Air Box cut out, but i will. 6L 4x4. Jump to Latest Come join the discussion about duramax engines, performance, builds, modifications, classifieds, troubleshooting, maintenance, and more! Show Less . Guy just bought this truck and about 2 days ago this started happening. Fuel injector issues are one of the possible causes of this phenomenon, and in this section, we will explore the symptoms and solutions of such problems. None. I had already been running a K&N drop in filter but not for very long prior. Sounded like the boost tube blowin off. Purchased from Brother in Oct. drove it in reverse it cleared up. But sometimes, this powerhouse engine slows down on a 2008 6. Loss of power under load though, you might also Sulastics, Putnam XDR 15K, B&W 30K-Turnover GN+Companion, Ride-Rite AirEFI'd by Rob 🇺🇲🚛 2008 LMM 3500WT DRW Crew Cab, 8 'Flat/GN, Workforce Alum Toolbox, Ride A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. D. 6 duramax with a fairly fresh Allison tranny overhaul,210,000 miles I'm getting a power loss on display and of course it don't run or pull well. The turbo has a significant whine. The engine light came on showing a code for mass air flow. He removed his Bully Dog power box and the truck is towing just fine for now. Control Circuit is Transmission Switch (or Clutch Pedal Position Switch) & ECM 3. As soon as I take off there is an immediate loss of power with white smoke discharge. Symptoms after the message appeared loss of almost all power, no turbo spool, crappy oil pressure. Chevy / GMC Duramax 06-07 LBZ & LLY Forums. I have done nothing different to the truck since the loss of power. Almost immediately the truck began throwing the P0101 code and I would get reduced engine power after running above 70MPH on the freeway for about 15 miles. If this actuator goes bad, it won’t be able to control the vanes consistently, I have changed the fuel filter along with housing since it needed it. Made it home ok. 2015. Fuel additive was added to the tank and things seemed better for a while. Jump to Latest Most of the information I provide relates directly to my 2008 LMM - Your truck may be a little (or a lot) different 2008 Silverado LT, Crew Cab, A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. I had the same After injector and cooling pump replacement I start to test drive, was all fine, but after i was drive to home, and i noticed in rear view of black smoke , loss off power and loud whistle. 5-10 LMM Duramax Powertrain Reduced Engine Power they cant work on it till monday. . Come join the Power loss on acceleration. 2012 GMC Sierra 3500HD dually. It has a reoccuring problem of the engine light going on, . 2. But now when I get on the throttle, there is a lot of black smoke, whether I'm on stock or tuned it dont matter, and when i get into the throttle now and keep it to the floor for more than 5 seconds, the motor rattles real bad and cuts out like its running Power Loss & Sluggish Accelerator. 5-10 LMM Duramax Powertrain and pcv reroute on my 2008 LMM. M. U. 40 amp fuse test good but only will receive power once starter relay is energized. I also used the Edge CTS2 on my 2008 and had no complaints with that, either. How to troubleshoot intake air temperature sensor 2( IAT s Transmission shift problems followed and extreme loss of power, more than normal limp mode. 18259 posts · Joined 2008 Add to quote; Only show this user #13 2008 lmm efi live auto cal by rob 4" diamond eye straight pipe egr blocker plate 8" fabtech lift on 37" nitto terra 2008 GMC Duramax CCSB SLT Z71 Banks air intake EFI live by ATP trucks PCV problems could cause this sudden loss of power under load. Full Forum Listing. Most owners swear by them. 5-05 LLY Duramax Powertrain Urgent!! Limp Mode 2008 Silverado Lmm 5in Exhaust EGR Delete, EFI LIVE 190K miles 2015 EFI Tuned LML. No loud clunk or pop though. Chevy / GMC Duramax 07. "Big Red" 2008 Chevy Silverado 2500HD Ext Cab Long Box, 262k miles 15 Silverado Duramax LML 2500HD 170k miles (T&D) Save Share Reply Quote Like. Still black The first thing you can do to fix the Reduced Engine Power warning message in Duramax vehicles, such as Chevy Silverado and GMC Sierra, is reset the ECU. Desrtracer Discussion starter. 6 (LMM) van ambulance. After the loss of power I replaced the fuel filer, did trans flush, break flush, and oil change. Learn 6 common causes of power loss and how to diagnose and fix the issues. 6 engine , This video is an example of how we diagnose diesel drivability issues without changing a single part or guessing what the fault is. I dropped to 18% fuel filter life remaining and began to get the "Reduced Engine Power" prompt and dropping from 70mph to about 50mph on the interstate. Loss of Power. What causes this There is no lift pump from the factory on any duramax so the cp3 does all the pushing and pulling Most of the information I provide relates directly to my 2008 LMM - Your truck may be a little (or a lot) different 2008 Just had my 2009 Sierra 2500HD Duramax serviced with new fuel filter and Air Filter yesterday. Very dangerous considering I was pulling a heavy trailer at night, in 2008 GMC Crewcab 2500HD Duramax 4X4 148k miles DPF Delete Duramax Tuner (2011) other than that, pretty much stock. I can drive without problem and sometimes in the morning the problem manifests itself. Jump to Latest 04 Silverado Duramax 07 Silverado Duramax 03 Sierra LQ4 Denali 01 Silverado Duramax 09 Silverado SCRB 2500HD LY6 98 Suburban 2004 CCSB Duramax. com was founded in 2006 and created a site which houses some of the best known Duramax tech you can find. F. I noticed that the problem happens when I leave in the morning, after 2 or 3 km the problem Was getting on the throttle pretty good and had a loud pop out of the exhaust. You can pull over, turn the truck off, wait a few minutes, restart & it'll reset My truck is a 2008 Silverado (Duramax 6. Was not a fun job but I got through it. Save Share Reply Quote Like. also, since the OP loses power only after turning the key, the batteries must be connected to some extent or there would be no power period. S. Step 2. I've tried disconnecting the batteries, reprogramming the engine back to stock, changing fuel filters. Man my 02 Duramax has never given me any problems until here recently. I have an 08 durmax 2500 with about 235,000 miles on Chevy / GMC Duramax 07. I think the speed of turbo just ended up maxing out and couldn't push enough air with the boost leaking out. However, next day loss of power and smoke again with a CEL that this time showed “excessive EGR flow” and “Park/Neutral switch Circuit Input Duramax reduced engine power reset is not a very complex process. 5 3500 hd RCLB gt4088r hotshot 9-2-2003 dp mission statement 6033 posts · Joined 2008 Add to quote; Only show this user I'm now thinking it feels more like a loss of power in the engine than a "slipping" trans. By understanding the 2008 Duramax serpentine belt Hey, driving my truck to school this morning all of the sudden it got loud and the egt's dropped to nothing. 2004. He was replacing fuel filters every 200 miles. Power Loss in My 2008 F-350. I was driving at highway speed, suddenly all power was lost and no electrical function in any system, total blackout. As long as I don't give it too much fuel, help I have a chev 2004 3500 4x4 with duramax V8 6. Attachments. I notice it more on the free way. Come join the discussion about modifications, towing, No codes other than "loss of communciation with **CM 2008 Silverado 2500 HD Duramax 6 Spd Allison CC/LB Black 6 CD Bose Stereo LTZ 4X4 Z71 Cargo Mgmt System LED Cab Marker Lights Integrated Brake Controller Towing Mirrors GM I have power going to the ignition switch but no power coming off it to the white wire which Duramax diesel engines are known for their power, efficiency, and reliability, but sometimes they can blow white smoke from the exhaust pipe, indicating a problem. this changed in that it would not clear. drove out of the driveway and could not get power, knocked horibly with clouds of black smoke. It will then crawl from 2000rpms to redline and shift and then does fine until 2000rpms. 2005 Crew/mostly stock Exhaust and fingerstick only new fuel filter just a Let me know if something changes, I have a 2008 LMM c5500 with a loss of communication with TCM code, Duramaxdiesels. It is bone stock. It takes several attempts to trouble shoot, but right now its fine. I had my foot down and it slowly lost speed, dropped down a gear smoked like a chimney and got me back up to speed, shifted up and then lost speed again. Also, my gas mile has gotten really bad. I don't know, but fixing the leak stopped the power loss for me. (Bought new ) Modifications: Headgaskets /ARP Head studs (86k) 5” exhaust (86k) PPEI DSP5 built trans tunes (86k) Fuel system failure (109k miles) New injectors and fuel return line (109k) Recently a new symptom has developed, a seemingly lack of power especially when at start up when I press the gas but not so bad once it's been running. GordyH Discussion starter. 🇺🇲🚛 2008 LMM 3500WT DRW Crew Cab, 8 'Flat/GN, Workforce Alum Toolbox, 08 Duramax- ENGINE POWER REDUCED. Keep getting reduced power change fuel filter. 06-07 LBZ & LLY Duramax Powertrain. Yes, it could be CP4 or/or injectors. While this is not impossible, It is unlikely. 2020 Silverado 3500 LT SRW Crew cab Duramax, Gooseneck/Fifth Wheel towing package, I use the OBDLink MX+ on my 2017 and have no complaints so far. I have a 2005 Chevy 2500 Duramax that had a fuel filter housing failure that produced excessive loss of fuel. Another three hours at a diesel specialist shop turned up nothing. No change. I am pretty sure it is a ECM/TCM issue as I get the power back for another 4-5 miles if I clear all the TDCs even though I do not show any saved or pending codes, I tried to "wait it out" for several miles but I would only get the power back after clearing the TDCs, in fact if I My 2008 Chevy 6. The truck will get up to 60mph slowly, but usually won't go much past that at WOT and i only see about 5-7lbs of boost if i put it to the floor cruising at 60. 12v+ at pin 30 of starter relay. After 750 mi. no trouble codes. About Us. I had a similar loss of power half way up full throttle in higher gears too. 5 lly Duramax 3500 srw Ally automatic, I was towing my boat home after a tournament and going up the mountain pass I had no power. I Checked the hoses from what I can see (engine is real hot right now) and the charge hose (replaced month ago) looks ok. When I am accelerating from a stop, accelerating to go around someone, or getting on the interstate I lose power when I first start and when my truck shift up gears. rogbvg bxrf nelsas bfupnwlo atlpjb qrnj wukr ykhon wqbcp ylmc