Lb7 loss of power

The owner of this GM Duramax was headed to Montana on vacation with his family and camper trailer in tow

Check all fuses that power up the FICM module on this vehicle

As you stated, shutting engine down for a few minutes seems to reset

One thing the ’01-’04 LB7 Duramax is notorious for is injector failure

6L Duramax, ranging from LB7 wires become exposed, including a no-start or rough running, lack of power  20 Jun 2019 02 CHEVY SILVERADO DURAMAX DTC P1093 LACK OF POWER UNDER LOAD DIAG AND REPAIR PART 1 PAIN FULL

This is a known problem with the LB7 and GM extended the warranty on these injectors to 7 yrs/200,000 miles

A blackout power surge can damage electronic and electrical equipment

The Duramax Engine is a General Motors diesel engine family for light to medium duty trucks

Duramax LBZ and LMM P0087 Low Fuel Pressure code Summer comes, temps rise, and the working trucks with relatively high miles start to set a P0087 code and go into limp mode while towing

Strictly rating on fuel economy gains I would give it 3 stars but with the awesome costumer service and the power increases it's a 5 all day! Banks Power Intercooler for 2001-2005 LB7 & LLY Duramax

6 LB7 diesel pickup or are looking to buy one, here are some common issues and problems we have run into in our shop

My tunes include DSP2 selectability (LB7 and LLY only) where a simple toggle switch is added and allows the user to switch on the fly between two different tunes

The LB7 is unique to other Duramax models as it predates emissions regulations

The brake booster is located between the brake pedal and master cylinder and uses a vacuum to overcome the fluid pressure in the brake system

Jump to Latest 04 GM 2500 CCSB 4x4: LB7, EFI Live by KW, 2" Lift, MBRP 4" dp back A forum community dedicated to Ford F-series owners and GM was eager to develop and speed to market the 6

Includes: New LB7 Filter Head; New Nylon Bleeder Screw 8 Sep 2013 The '03 truck has 195K on it stock

Check the oil level, LB7 engines have the injectors under the valve cover and are very susceptible to dilution

The owner of this GM Duramax was headed to Montana on vacation with his The pathway for the actuation of the fuel pump and power windows are very similar

This article tries to make things easier for you by providing a list of some of the best injector models for LB7 Duramax and their complete reviews

Compound Turbo Kits (also known as Twin Turbo Kits) for the 2001-2004 LB7 Duramax have become one of the most popular upgrades for daily drivers and towing rigs

So far, this seems to have solved several issues I was having: having to reprime way too often, slight surging, power loss and delay between the 2-3 shift, especially with the fuel pressure cranked up

Do not trust any electronic boost gauge that uses the factory MAP sensor or OBD2 plug

As if it is running out of  24 Nov 2018 in the LB7 and LLY engines can bend with added power and the LBZ rust or debris infiltrates the CP4

Jan 30, 2014 · The engine should be at 170 degrees or hotter, at a normal 680 idle(01 idle at 600, and LMM's idle at 720), rail pressure should be 35MPA for federal LB7's, and 30 MPA for most others, the battery should be charged with no abnormal loads on the engine(IE A/C off), and vehicle speed is 0MPH(the ECm only does balance rates when the engine is Click here to view this document as a PDF (right-click to download)

This fuel rail plug will remedy fuel pressure loss caused the fuel pressure relief valve

writes: “Greg, have you heard of any problems services are having with the Chevy Duramax and the Loss of Engine Power

The Duramax 6600 was the first engine that came into fruition after this relationship Power Products carries the PureFlow AirDog Replacement Water Separator WS100 PPE Dual Fueler CP3 Kit 01-10 LB7/LLY/LBZ/LMM Duramax PPE-113064100-main 0

After realizing the potential power loss from the small diameter factory tubes, we increased the size of the tubing to 3 Product Description 6

Check and record any DTC, look at snap shot data or save, do not erase codes prior to If the engine dies or has a sever power loss power while under a load the problem is most likely fuel supply related

This plug features a solid design and eliminates the possibility of fuel being returned back to the tank

Seems if I shoot the power to it, it will suffer a drastic power loss, reluctant to go over 1800 rpm after I get through 3rd gear, it will roll pretty good, since it doesn’t need 1800 rpm to maintain avg65 mph

Verify that the injection pump has a good, clean, not aerated fuel supply

Mar 15, 2010 · The LB7 injectors need a trigger of about 93 volts at 18 amps to initiate injection, with a high current load of 12 amps to sustain injection

While various versions of the engine have surfaced over the years, all generations of the Duramax are based on the same foundation

Jun 20, 2019 · LB7 Duramax diesel cp3 test fuel injector failure return rates code 1093c 1094c loss rail pressure - Duration: 3:56

Apparently the truck runs fine under normal conditions, but he has lost the acceleration he expects when he really gets into the pedal

After realizing the potential power loss from the small diameter factory tubes, we increased the size of the tubing to 3'' which proved major power gains over the factory intercooler system

Looking for the right fuel injector for your engine and its needs can be a frustrating process, especially if you are not a mechanic or car enthusiast

The BD-Power Passenger Side Up-Pipe features a 304 stainless steel construction built with precision cast mounting flanges that eliminate exhaust tubing blowouts

It only has 140,000 miles on it and the injectors were replaced abut 5 years ago at 98,000 miles

loss of MPGs after valve adjustment??? ok, so here it is, a few months back i replaced my injectors (The infamous LB7s)

Duramax 6600 Welcome to the Internet's first Duramax 6600 diesel discussion forum for the LB7, LLY, LBZ, LMM, LML, LGH & L5P RPO code engines

GM now warranties these issues but it will always stick with the LB7 name

I am on the receiving end of continuous calls over the past few years inquiring what to do

codes in the TIPM and additional modules for loss of communication codes

Mar 24, 2014 · LB7 Duramax diesel cp3 test fuel injector failure return rates code 1093c 1094c loss rail pressure - Duration: 3:56

I recently purchased the Duramileage tune for my 2003 LB7 Duramax, and wow I notice an immediate difference on the whole power band, acceleration, power, shifting firmness, and especially the mileage

fuel leaks! High pressure fuel entering your bloodstream may result in amputation or loss of life

Hers - 04 GM 2500 CCSB 4x4: LB7, EFI Live by KW, 2" Lift, MBRP 4" dp back I have a loss of power,poor fuel milage (10-13), no smoke, no codes

The LB7 Duramax has a very restricted charge air system from the factory

Already the quickest trucks out of the box among the Big Three, it doesn’t take much to keep them at the front of the pack

For the LB7 Duramax, the Flashpaq offers four power levels above stock: Mileage XS, Tow, Tow/Perf and Performance

7 The BD-Power 1403802 Passenger Side Up-Pipe is a direct replacement for your 2001-2004 GM 6

The LB7 featured a 32-valve design with high-pressure common-rail direct injection

A vehicle requires proper fuel delivery to its engine to function properly

The Diesel Page Forums 2020 - TDP's 24th Anniversary 2004 lb7 loss of power

Here's a list of top-rated fuel filters for duramax diesel: ACDelco TP1015, GM If the car has lost power and agility, and fuel consumption has increased 

It wil run to about 65 - Answered by a verified  26 May 2017 to increase engine power and efficiency" in its Duramax diesel engines

It wil run to about 65 mph and lose power back to about 25mph

Fuel Filter Housing Oring Leaks – The Duramax fuel system does not have any sort of low pressure fuel pump pushing fuel to the engine from the tank

May 27, 2011 · My duramax will lose power like someone turned the fuel off, but would continue to run at a even 65 mph, I can not remmber the rpm but it will also shut down if I try to accelrate from a stopped position at a rpm higher than the same rpm running at 65mpr

Unfortunately the LB7 is somewhat remembered by its fuel injector failures and overheating

During that time, there were a few minor changes that needed to be made, but all and all the engine held up quite well considering it was a ground-up new Does White Smoke Mean Injector Problems? White smoke from an LB7 Duramax engine often indicates faulty injectors

After stopping for lunch, the owner was dismayed to find that his Duramax immediately went into “limp mode” as the engine started

) 113064100 PPE Dual Fueler CP3 Kit 01-10 LB7/LLY/LBZ/LMM Duramax $ 999

We are a tight knit community of like minded enthusiasts who value "on topic", clean discussion

6-liter Duramax V8 is the modest one of the bunch with "just" he's done nearly everything to the power plant while monitoring all sorts of If you own a heavy-duty Chevy Silverado and are tired of losing to  If any competitive tuners lose power or fail in any way, they will instantly trigger a “limp home” mode where all power is lost and the vehicle dangerously slows to a   First introduced in 2004, the Duramax LLY engine is a 32-valve turbocharged The TSB does state that the engine will misfire, idle roughly and lose power

After driving it with the Stealth on I don't think I would ever choose to go back to stock power

the case with this month's focus: the fuel pressure regulator on a 2005 LLY Duramax

it will usually do this for a few seconds and sometimes the power comes in and out then finally starts acting normal and accelerates like a Hi everyone

It seems to have a loss of power while pullling a heavy load

Fast forward to this past weekend, driving around three hours away from home and half way to my destination I get the 0 percent fuel filter coupled with a "Reduced Engine Power" code and big loss in power

any more info on the filter head rebuild kit? my '04 duramax loses prime once in awhile and when you go to reprime there is a slight fuel leak atop the filter head by the primer pump

Cut and coated (de-lipped) LB7 pistons were a hot item in the days before Mahle Motorsports and other piston manufacturers offered an aftermarket piston option—and for affordability reasons, they’re still a well my dads 04 lb7 started running like dog shit so i took it for a spin, when you get on the throttle it has little to no power and just pores out black smoke, changed the fuel filter just to keep it simple,no luck plugged it into my code reader, had 6 codes but i think some are old ( at least Aug 03, 2007 · In 1997, Isuzu Motors Ltd

marketing, and selling vehicles that lack proper emission controls

We have one that is a constant problem and the mechanics can’t seem to find out the cause

I don't have any aftermarket gauges, just the factory ones so I can't tell you how much boost there is

Happened again, still didn't think I needed to change the filter but bought an ACDelco and left it in the truck just in case

while i was in there i decided to adjust the valve lash, based on some other forums recommendations as it would help quiet down the engine and make it smoother running

I have run mine for 18 hours straight, pulling a 10K gooseneck horse trailer from Ohio to Florida

Blackouts are the result of power lines that experience a large spike of current when the power comes back on

Locate where the ground attaching points are on the vehicle and make sure that these connections are clean and tight

The two primary failure points of the factory injectors are internal cracking of the injector body itself and corrosion-induced failure of the internal ball seat

Welcome to the "Diesel Forum!" Diesel Truck Forum and Owners Club! This forum is dedicated to Diesel Trucks and their owners! CUMMINS - POWER STROKE - DURAMAX

Other symptoms include power loss on acceleration or hard starting

I have been experiencing power loss while accelerating over the past few weeks

Additional Notes: The Duramaximizer and Dynomite are pressure type harness boxes

I recently installed a 4" MBRP exhaust and programmed to Stage 2 with a PPE tuner that was just a few  LB7 Performance - 2003 LB7 no power after mid throttle - In normal driving it runs great

gm wants over 400$ for the filter head! i thought the leak might be coming from the plastic inserts though where the wiring goes thru for the fuel heater

Later versions including the LLY, LBZ, LMM and LML would use more sophisticated turbos and engine controls, ultimately increasing both horsepower and torque by about 80 percent from 2001 to 2011

6-liter LB7 Duramax Engine is produced by DMAX, a joint venture between GM and Isuzu in Moraine, Ohio

The Duramax-Allison combination was first introduced for the 2001 model year, replacing the 440 lb-ft Detroit diesel with the 500 lb-ft LB7

Richie's Truck and Auto 18,991 views Mar 04, 2009 · My father has a 2002 3500 crew cab with the LB7 Duramax in it, and has had the injector TSB replace all injectors done about 20k miles ago

Blackouts, or internal power outages, happen when a large area loses electricity or the current in the power lines go to zero

I took it to the Chevy dealer and they said that I needed a new ECM

The Bullseye Power Drop-in LB7 BatMoWheel for your 2001-2004 GM 6

Shop all the Performance parts and upgrades for your Duramax with Dirty Diesel Customs! 2001-2010 Duramax KRYPTONITE Death Grip Tie Rods (KRTR10)

Richie's Truck and Auto 19,621 views 2002 LB7 with power loss I have a 2002 LB7 which has began to run weak! If I go to head up a hill it just seems to bog down or flip the check engine light

01-08-2020 Dec 16, 2019 · To start, let’s briefly touch on what a balance rate is

Common Issues and Problems We See In The Shop With The LB7 6

Heater Hose Connector at Heater Core, Inlet Outlet,2001-2014

Its unique design increases spool-up, throttle response and also increases power and efficiency

Worn and damaged injectors are often the cause however there are other causes and considerations that should be looked at prior to injector replacement

Features:61MM Inducer+36HP Over Stock Supports up To 605HP Drop-In Replacement Wheel Diesel Site Wicked Wheel 2 WWLB7 25267 3

6L Duramax LB7 Description: The LB7 Duramax has a very restricted charge air system from the factory

Lowers restrictions for superior flow with 25% larger core area and 34% more volume

I had my injectors changed about 4k miles ago and didn't have any issues until about 800 miles after the change when it threw the low coolant message

Joel Automotive In  2 Jul 2019 In most cases, you will be driving around when suddenly you might notice a slight loss in performance

He is experiencing a loss of power under heavy acceleration in his 2002 2500 with the DMax

This is a direct replacement for your 2001-2004 LB7 Duramax and no fuel line modification is needed

Compounding over your factory turbo charger has been proven to provide cooler EGT's and increased power across the rpm range, all while allowing the use and function of the factory The pressure it causes can give the engine a lot of power; however, an overboost condition may cause engine failure, which can be a pretty serious condition, especially for engines not designed for such high pressure intake

I am at a loss why it refuses to give it fuel, like something is holding it back

6L Duramax Turbo to Up Pipe Gasket by Merchant Automotive part number 97192618 LB7-Stock turbo trucks should make 26psi with Jack tuning and 29-31 with king tuning as measured on an analog gauge

I thought it could The LB7 also appeared as the engine to adopt common rail technology, as Dodge would not implement its own common rail Cummins until the 2003 model year and it would take Ford's Power Stroke until 2008 to apply the technology

It feels like im letting off the throttle even though I am obviously not

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The upgrade re-calibrated the engine to the tune of 400 horsepower and 800 lb

00 Add to Cart TODAY ONLY and Enter Discount Code [ JUN-08 ] On Checkout Page for an ADDITIONAL $100 SAVINGS! Single Best Upgrade for Every Duramax There are a ton of bolt-ons that make driving a Duramax-powered ¾-ton Chevy or GMC much more fun than operating a 7,500-pound pickup should be

Sometimes you'll get a “change fuel  11 Nov 2017 Since we gave the Power Stroke guys a little insight what their The lack of meat in this critical area helps explain why the rods are prone to bending 16

The LLY got a new catalytic converter design for 2004 that is the same size as those used on the LB7, but the quantities of precious metals and resulting effectiveness have increased

My Duramax is a 2003 LB7, completely stock, and does not seem to use a drop, at 27K miles

Ironically enough, a lot of budget Duramax builds (LB7-LMM engines) entail the use of LBZ/LMM rods, but employ LB7/LLY-based pistons

Symptoms include excessive fuel usage as well as stalling, hesitating, hard starting, and loss of power

Duramax Timeline Duramax Horsepower & Torque by Model Year

Re: Duramax LB7 Smokes at idle Ray, I had a 2002 GMC 2500HD with the Duramax and I had problems with the injectors that caused excessive smoking at idle

If the pressure falls off when the problem occurs then there is a problem in the supply system

The hotter the exhaust gas, the more it will expand and drive the turbo

I have had my rig for about 4 months now and have been researching many products on the market to achieve the best balance of power and mileage

2 (usually due to bad fuel or lack of  6 Mar 2015 02 CCSB LB7 severe lack of power (like a 4cyl) Duramax 6600

The power increase is the best and most noticeable difference

8:1 on LBZ, LMM, and LML mills), the LB7 and LLY engines naturally  25 Feb 2020 General Motors' 6

of torque can be added to that Duramax engine in the Performance tune, this particular truck is used on a daily basis to tow trailers around town and across the state to rodeos on the weekend

There are at least 4 components that make up a vehicle’s fuel system which include the fuel pump, fuel pressure sensor, the fuel rail and the ECU which monitors everything

balancing point, from which each of the individual cylinders gets its rate from

Hot engines cause fuel to evaporate, which can leave gum-like deposits that can change an injector’s ideal conical spray pattern to an irregular one, or even reduce fuel volume to the combustion chambers and cause drivability problems

Jan 11, 2016 · The purpose of a brake booster is to provide power assistance to the braking system, meaning you do not have to put a lot of force on the brakes for them to actually engage

For the first four years, this engine (named LB7) remained unchanged and proved to be a sound offering

7L Power Stroke became available, causing Ford to quickly increase the Power Stroke’s available horsepower and torque rating via a free performance upgrade to owners

Loss of Prime and low fuel rail pressure codes are common symptoms of a bad filter head

There are no codes, no black smoke and it starts and runs like it always did but with less power

The Turbocharger Oil Return Tube connects the turbo oil passage to the vehicle’s engine

99 2050-01-01 Jul 01, 2008 · We started with a 2005 GMC Sierra 4x4 Duramax diesel truck and found out how to get 500 horsepower and 1,000 lb-ft of torque inside Four Wheeler Magazine

The reason for the low end loss on some trucks is from a loss in exhaust gas temps

6 liter engine first appeared in the GMC and Chevrolet pickups in 2001

I have an 04 Duramax LB7 with 129k which runs great except for the fact that it's burning coolant

6L Duramax is a replacement compressor wheel for your stock turbocharger

A Duramax truck with stock injectors and tuning, at operating temperature, should idle with a calculated fuel rate (CFR) of 7-9 mm³ – and that is the baseline, i

SPADE Eliminate the low fuel rail pressure codes and loss of power issues in your 2001-2004 LB7 Duramax with the XDP Duramax Fuel Rail Plug

Replace your worn or leaking filter head with a brand new unit

Did it lose power with the injectors? If so you probably had worn out nozzles or leaking valves causing your old ones to dump diesel in whereas the new injectors are actually metering it correctly

I haven't found any leaks in the fuel system, so I'm guessing the cp3 is worn

The California LB7 and all LLY engines are equipped with catalytic converters, designed to trap and vaporize PM (soot) expelled by the engine

6 Duramax Engine 4th May 2015 If you have a 2001-2004 Duramax 6

6L Duramax has been in production since 2001 and has proved, on a large scale, to be a relatively reliable and durable platform

Improves Power, Durability & Fuel Economy Optimizes the boosted air density for higher continuous power and lower exhaust gas temps

The electronics necessary to do this required additional cooling, this is the reason why fuel is routed through the FICM