Symptoms of bad ficm lb7. Core return required for warranty activation.

Symptoms of bad ficm lb7. 6 Technical. balance rates are good. I'll start this off by saying that I know there are a ton of threads about these injectors and their problems. LB7 Duramax head gasket problems can occur for a couple of reasons. A. inspect carefully. Feb 29, 2020 73 3 8 Las Vegas, NV. That leaves either your FICM failed (rare), you have the common injector pigtail issue (again, should have 202/207 with it), or you have bad ground(s Lb7 Bad FICM after injector change. The FICM regulates the fuel delivery to the engine, ensuring proper combustion and overall engine performance. 5 you dont have the lb7 motor which was known to have all the injector problems, im not saying that the injectors are Duramax First Generation: 2001-2004 (LB7) Possible FICM problem. 2005 GMC Topkick There is really no indication of a bad fuel filter, but if you go too long on a bad filter you can lose mileage, power, etc I recommend changing your filter on a REGULAR basis, don't push it out to 15k miles. SpakyJman86 Discussion starter. DouglastheLB7 Discussion starter. A shop replaced the original one in 2018 when it would occasionally die. The fact that you have no other codes indicates that the FICM is seeing every injector and is not seeing a problem with any circuits going out to them. It may take a few attempts to start and once running may sound and feel The major signs of a damaged FICM are hard starting or failing to start, rough running, lower power, and a greater than normal amount of exhaust releasing from the tailpipe. com/ This Video Will Show You How To Check Your LB7 Fuel Injectors If The Solenoids Are Bad, Keep In Mind That All Trucks Are Differen Switched FICM with no change in symptoms. It can cause a good deal of trouble to have one go bad if you are not prepared. It didn't bother me at the time, but I wish I had it now. To move forward with Have you compared actual to desired fuel rail pressures at the temperature variations. When using the scan tool to increase rail pressure at idle, if you can’t get to 21,000 PSI then the injectors are usually bad. Engine performance issues are another possible sign of a bad One thing the ’01-’04 LB7 Duramax is notorious for is injector failure. When it fails, it can cause reduced power output, poor fuel economy, and even engine damage. Injector Operation LB7/LLY( prior to 2006) The LB7 Duramax is more prone to head gasket failures than future generations of the Duramax engine. 4" Magnaflow ported the turbo intake AIRDOG II 165 ,PPE boost vale, HID head and fog lights also change my daytime running lights to HID to Alrighty here goes nothing My idle fuel pressure is at 9,000 psi I have tried commanding it higher or lower with my tech 2 to no avail. Cut the tie and pull the wires out. I'm being told my FICM is bad, but what other tests are I've got a 04. Put the 6. Without being able to look in the manual at the moment and see the circuits for the pins that you LB7 Wet FICM No-Start Issue: Troubleshooting and P0650 Code. Jump to Latest 3K views 3 replies 3 participants last post by roswell Jun 25, 2022. It's well worth spending the extra P0611 is a death code for the FICM They are pretty tough, and you rarely hear of them failing. Additionally, the FICM bracket is rather sharp and often rubs through wires. marine4x4 Discussion starter. The truth is you could toss a coin and have a fair chance of deciding that your LB7 needs a set of injectors, but there is of course a very scientific way to determine which ones are failing. Be sure you insulate the harness from the bracket, as the whole problem is the FICM bracket has a sharp edge and cuts into the wires. Before diving into the symptoms of a bad FICM, let’s first understand what the FICM does. I'm guessing With bad injectors my truck goes into a full on lope during decel. I bought a 6. Tags lb7 lb7 ficm. So got injectors changed and return lines changed. The solenoid style Bosch units found in the LB7 employed a non-hardened internal ball seat to seal the NOTE: The most common symptoms of a failed FICM are: NO START or CONSTANT MISFIRE AT ALL ENGINE TEMPERATURES. 3. Problem remained. Keep in mind that filters and oil are cheap insurance for an expensive engine and transmission. the 2004 is the year that they switched motors. Symptoms other than these are not likely to be caused by the Ford 6. If you see gray smoke or I haven't found a definitive test to differentiate between a bad FPR and a worn out CP3. What are the symptoms of a bad FICM and why do so many people have FICM issues? MIKE 2004 F250 C/CAB 4X4 KING RANCH 4" BANKS MONSTER EXHAUST SCTX3 AUTOMETER 3 GAGE A-PILLAR POD ACCUFAB SMALL MOUTH POWER ELBOW. When I installed the injectors I used all new fuel lines, orings, and new banjo seals. I bought his upgraded Ultra service, which has a lifetime warranty. Here are common issues experienced when you have bad injectors. Took it by my diesel shop and #5 injector showed bad with others way out in negative. just sounded like a gang of midgets under my hood with hammers and was pouring white smoke out of the exhaust. 4 posts · Joined 2014 Add to quote; Only show this user #1 · Oct 7, 2014. After a month of work with no luck I decided to try a new FICM but thought it was a little expensive to take the chance so I took a chance by buying a used one from ebay, plugged it up and truck started right up that was over a year ago with no Bad FICM or Bad Injector or other? Jump to Latest 29K views 10 replies 5 participants last post by Shinola2014 May 4, 2014. 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. Jump to Latest 3K views 1 reply 2 participants last post by Ron Nielson Feb 13, 2022. if its 2004. Overheating can I stumbled onto my own thread trying to figure out what if my ficm is going bad 10 years laterI thought it sounded familiar and then I saw that I wrote it. If you do put it back together and it runs bad or misses then you bent a pin. DTCs U1800 and P2149. And you said you checked all the wires. It was pretty clear that I had a bad FICM, because my voltage was dropping down into the mid-30's, especially when cold. Here Check your EDU fuse. my lb7 has 213k kms (130k miles) on it and i think im finally experiencing what i think are injector or pump issues. 0 FICM module. toxicdiesel. I also checked the wiring harness 1. Sheet The FICM is located at the center of the photo. The radiator gets dirty and clogged with debris naturally over time, which causes engine overheating. The LB7 Crank no start FICM or ECM wiring? Jump to Latest 7K views 5 replies 4 participants last post by roswell Jun 25, 2022. I have never got a Signs of Bad LB7 Duramax Injectors. Jump to Latest 6K views 2 replies 3 participants last post by nickw059 Oct 10, 2014. FICM provides power that controls the fuel injectors; whenever this component develops defects, it becomes hard to start the engine. Apr 19, 2013 32 0 0 Hudson, Ma. I have a 2004 lb7 it has 163000 miles this is a problem I had about 6 months ago that I thought I had fixed by removing my edge juice. Go. But what are the symptoms of bad FICM relay? The symptoms of a bad FICM relay The "Little Box" is the FICM- [fuel injection control module] Used on the LB7 and the LLY- later engines do not use this. 18 posts · Joined 2015 Add to quote; Only show this user #1 · Jul 5, 2015. I’m just inclined to believe it’s not the ficm. Erratic engine behavior may also indicate a bad or failing ECM. Perhaps the most devastating of all Duramax failures is a broken factory crankshaft. Duramax Hard Parts. ALPINE DVD JL AUDIO IN DOORS & IN BACK JL AMPS L7 KICKER10 IN CUSTOM PORTED 2002 2500 LB7 EFI LIVE 4" MBRP EDGE INSIGHT GAUGE 104,000 MILES:drink. The wastegate is an important part of the turbocharging system, as it controls the exhaust flow and boost pressure. Checked again, still at #5. You can also use balance rates to help determine if you have any bad injectors. superpro56. 0L Power Stroke Diesel - Bad FICM with 48V. Finally solved my 6. 38 posts · Joined 2008 Add to quote; Only show this user #1 · Sep 28, 2008. Snapped Crankshaft. ” I found codes U1800 and P2149. The 6. S. Compression check is good too. If it shows diesel in the oil-- that is usually caused DURAMAX - LLY / LB7 FICM & ECM Repair Is your Chevy Duramax FICM or ECM/PCM in need of repair? Look no further. Lb7lover Discussion starter 11 posts · Joined 2022 Add to quote; Only show this user #1 · Jun 23, 2022. Check out this list of symptoms and OBD-II codes to see if your troubles could be caused by a FICM in need of repair: Truck won't start; Truck runs, The LB7 uses 96 volt injectors so it is close to the capacitor rating but being a film capacitor they are known for their long life and low failure rate. First Prev 2 of 3 Go to page. No smoke black or white while hot or cold. D. Since the owner had also reported a fuel gauge malfunction, I successfully completed a gauge sweep and checked for powertrain “P” codes, body control “B” codes and communication “U-codes. I disconnect the FPR no change. Soon after, it started what sounds like a gasser with timing off, A loud knock. An underhood inspection revealed that the previous shop that had 2001 LB7 4X4 Banks six gun with IQ cold air intake 6in lift fabtech. Fuel in Oil. 15 posts · Joined 2013 Add to quote; Only show this user #1 · Dec 26, 2014. Ok here goes!! 04 lb7 Replaced injectors, cp3, fuel rails, junction block pretty much All you need to do to verify is get out your multimeter and remove the harness from the number 1 and 3 injectors. · When cold, check the intake heater operation. Save Share Reply Quote Like. Many forum posts helped a ton, even though some threads ended with no resolution. First do the "Paper Towel" test- drop some warm engine oil on a paper towel-- the oil will make a spot-- and diesel in oil will make a halo around the oil spot-IF ANY. Common symptoms of a failing wastegate Bad Turbo Symptoms Thread starter Goad; Start date Feb 11, 2021; Forums. My rig passes that test perfectly (47V during crank). Maybe G102 ground or bottom of ECM It is also responsible for the timing and firing of the fuel injectors. Dsrouse27 Discussion starter. Scratching my head. Considering the 03 LB7 Duramax FICM failure after injector change. Berge9798 Discussion starter. They kept my old one. Compared to another truck, the timing is off by almost 7 degrees (-3 compared to our +4) on the main injection and off 5-8 degrees (+5 compared to our +13) on the pilot. 0l Issues - This will be long, but I want to make note of all the issues I've gone through, and how I resolved each one. 1 2. After a long idle (5-10 min) there is a light smoke that starts to Also when putting back in lay the ficm back on top of the harnesses and with a hand on both sides, use your finger tips to plug them back in (listen for the click). A faulty computer may cause the vehicle to intermittently stall or misfire. 0L FICM consists of two parts; the power supply half, and the logic half. 0L Power Stroke diesel engines. 2004 Silverado Cali lb7, Airdog ll 165, fresh sticks at 325k, Rick Fletes Dsp 5 on v2, 33x12. Code:U18000 Description:Lost Communications FICM voltages are LB7-96v, LLY-48v, LBZ-24v. When a fuel injector circuit condition is detected by the FICM, all of the fuel injectors on the affected ignition voltage circuit will be disabled. It is present on every tune and doesn't seem to LB7 Injector Symptoms + Diagnosis. When they do fail it's typical to A common symptom of a failing FICM might be signs that the engine is not running as smoothly as it normally would. LB7 . Goad Member. 5 on . Am I out of diagnostic options and just need to try replacing the FICM? I don’t have a spare FICM to test with and I don’t know someone with another LLY to throw my FICM on. When it is cold, normal ambient temperatures should be displayed by the coolant, intake air, inlet air and battery temperatures. Water pump could be going bad as well. The first visual clue a driver will notice will be excessive smoke from the tail pipe at idle. 8051 posts · Joined 2008 Add to quote; Only show this user #2 · Mar 11, 2013. While we specialize in model years 2001-2005, we're able to service/repair most model years. A However, excessive leakage from the injectors can also cause a DTC P0087, P0093 or a P1093 to set. If a circuit condition is detected Hard to Start. Is there one? 2001 CC SB 4x4, 178K, 33x12. Don't try to turn it on its side to plug it in it is more difficult this way (imho). Hard Starts. I have an 02' 2500 HD 6. Replaced it with OReilly reman and problem remained. It can't be felt, only heard. 6 I bought at an auction drove it 200 miles ran Perfectly no smoke then just shut off while driving. A bad FICM won’t provide adequate power in the injectors to control fuel Failing Duramax FICM Signs. LB7 FICM and Injector trouble. 0l Excursion knowing it needed Ficm wiring test on LB7. Overheating can Ultimate Guide to LB7 Injectors: Everything You Need to Know Are you facing issues with the LB7 injectors of your vehicle? Are you searching for a comprehensive guide to answer all your questions? Look no further! In this ultimate guide to LB7 injectors, we will provide you with everything you need to know to understan Fits 2001-2004 Chevy / GMC 2500HD / 3500HD LB7. NOTE: Before replacing a FICM for an injector related fault code check and make sure there is not an injector or injector related circuit fault. B. i got a 2003 LB7 that needed injectors it was filling up my oil with diesel. , then hours later ran fine. I also went with the Atlas 40 tune, which I like! I have not gotten any codes, and have done some 'spirited driving' since I got the parts replaced. Start/stop cycles with "Low-Fuel" light, running on 4-cyls. Sort by Oldest first Oldest first Newest first Most reactions. Jump to Latest Unplugged Edge Juice, not the issue. It 03 lb7 ccsb 4x4- HD hood and grille- inch lower than stock 20" mkw's 305/50/20 cooper zeons Now all glowshift gauges- traction bars- DHD stainless DP-4" MBRP- PPE BIV- AD II 200 lift pump- edge insight CTS- spectre CAI- 45% over injectors- LMM cp3 & FPR -EFI live dsp5 from tony burkhard and danville performance i have a 04 f 350 i bought about a month ago and i changed the oil and the fuel filters, i unplugged the battery to clean some corrosion off, since then i have had the rough start and idle like the symptoms of a bad ficm and i had a p0611 ficm code so i took the ficm off and sent it to ficm fixer in texas and they tested it and it tested good with 58 v on cold and 57. If I disconnect the Fuel Rail Pressure Sensor I am then able to command a change of pressure with my tech 2. agoff33 Discussion starter. You have a MAF fault. guga1979 New member. Depending on which half fails, the symptoms can vary. My original problem was the Bostech injectors were severely mis matched in their idle fuel output. Then check the resistance (ohms) of each one if injector 1 is shorted it will read a very low number. It also controls the Bad ECM symptoms. Wiggled and prodded all the FICM wiring, not the fix. One Year Warranty, with 2 Year Warranty Option. To check for a potential bad injector, check the nozzle tip for signs of leakage. Feb 11, 2021 #1 Just did my injectors (SAC45's). · Check rail pressure when the engine is off. Recognizing the symptoms of failing LB7 injectors early on can help prevent further damage to your engine and costly repairs. 123Dmax Discussion starter 2 posts · Joined 2022 Add to quote; Only show this user #1 · Mar 27, 2022. The Fuel Injection Control Module is an essential component of the 6. Lol. The grounds for both plugs are tied together internally inside the FICM which would explain why it was running ok with this ground missing. Tags ficm lb7 wet. The shop got the injectors changed out and LB7 Code Thrower, bad FICM? Jump to Latest 11K views 5 replies 3 participants last post by jc1843 Feb 16, 2015. 18 posts · Joined 2013 Add to quote; Only show this user #1 · Feb 15, 2015 (Edited) I have been diagnosing a no run/ sometimes running rough condition with my LB7 which is mostly stock other than bolt ons. It should be zero PSI http://www. I have a non running lb7 throwing a non communication code between ECU and ficm. Core return required for warranty activation. I recently took my 03 duramax to a shop to get new injectors installed. Next Last. FICM Problems need help!! Jump to Latest 14K views 13 replies 7 participants last post by mray Aug 20, 2018. SKU: 97720663RX; Item #: 97720663RX; Brand: Freedom Injection; Engine overheating is another common problem with the LB7 Duramax. 50/20 Toyo MTs, '02 OS, EFILive 2000 F350 V10 auto, 5", 35's, thirsty spare tow rig 2006 Yamaha Raptor 700R, 90WHP on 10psi. Bought it in August with no issues. There are three 6. If you don’t know what to look for, you might miss the symptoms of your need for something new. 0L Powerstroke engines. Is the top radiator hose hard after you let it cool down The Lb7 Duramax injectors are among the finest injectors made. Jump to Latest 17K views 25 replies 5 participants last post by THEFERMANATOR Aug 18, 2015. I know these can be changed with advanced tuning like EFI live, but what would cause this to be off on a stock truck? How do I verify if the Be sure you check this also-- The FICM harness-- It is secured at the side of the alternator with a Zip tie. Jump to Latest 53K 2001 Chevy CC/SB 4WD EFI Live DSP 5, LBZ Short Block, Cut LB7 Pistons,keyed crank and cam, balanced,LBZ Intake Runners with RDL Shorty Y-Bridge, EPR Twins, Big Dipper 40% overs, MBRP Cool Duals, LBZ CP3, ADII, BD Manifold, C2 Gauges, H2 Wheels, Cognito Sleeves and Braces, Hids-Hi-Low-Fogs. Some of the most common symptoms of a failed power supply side are: The engine is hard to start, especially if it has sat overnight. You will have to cut open and inspect the entirety of the harness for shorts. Prev. 1; 2; 3; Next. 0 Powerstroke engine, as it is responsible for managing the fuel injectors. I have gone through most The FICM is a crucial component that provides a balanced air/fuel mixture for optimal combustion in 6. 6 posts · Joined 2021 Add to quote; Only show this user #1 · Jun 12, 2022. 5 nitto at on 20 inch American Racing 20x10 wheels, Stage 5 Built Transmission by Mike Cole with triple disc billet low stall converter, 4 You should have an associated P0207 or P0202 to go with the 2146/2149, but you don't so that should rule out bad injector pigtales. With the price of FICM repair and injectors, I'd like to see if anyone has a way to isolate the issue before I start spending $$. Believe it's a bad ficm but first want to check My 01 LB7 had the same code after changing the fuel filter, tried everything to fix it per recommendations on the forum. When the fan clutch is damaged, it can’t function properly, giving the LB7 Duramax engine the extra cooling it needs. B--S Discussion starter. Duramax 6. The bad ECM symptoms might come and go and not appear to have any sort of pattern to their frequency or severity. As with everything mechanical, the Lb7 injectors will need to be changed from time to time. If an injector is leaking excessively LB7: Ficm problems??? Thread starter MAXX IT OUT; Start date May 25, 2013; Forums. basically the truck feels like it LB7 bad wastegate symptoms are symptoms that are indicative of a faulty wastegate on a Duramax LB7 diesel engine. I have good I had the injectors go bad on my duramax and there was no check engine light. Jump to Latest 6K views 7 replies 5 participants last post by christinedrysdale4 Sep 12, 2024. Bad Injectors. I figured out that the lb7 only balances the injectors when the truck is not moving in gear or sitting in park at idle. Engine Performance Issues. Broken fan clutches or bad water pumps cause overheating issues. Replaced again thinking bad reman. The only codes it's showing is a low voltage code for the oil pressure sensor and high pressure ac sensor (p00522, p00530). Checked batteries connections, not the fix. Despite this, head gasket failure usually doesn’t occur until over 100,000 miles, so it’s not nearly as common as it is in 6. Shinola2014 Discussion starter 22 posts · Joined 2014 Add to quote; Only show this user #1 · Apr 28, 2014. Our module repairs are guaranteed to meet or exceed OEM performance at a fraction of the cost! Video: Symptoms of a bad FICM. Details. Not only does this mean game-over for the engine, but it results in a Common Symptoms of Failing LB7 Injectors. Most people when they suspect a bad FICM for no start usually have this code. 15 posts · Joined 2022 Add to quote; Only show this user #1 · Jan 19, 2022. May 31, 2013 #21 That was helpful info, I had a P1232 (injector4) along with the P0304. Excessive/Constant Smoke when Idling. WisconsinHick1. Sounds the same as it did before I installed injectors. Here are I have checked wiring from FICM to driver valve cover main connectors, passenger side FICM grounds, and both fuse box areas to no avail. Any help would be appreciated. 5 LLY with a bad FICM. I The injectors all looked good, there were not any other codes, and the regulator command current (mA) and duty cycle (%) seemed right on what normal values should beI am really surprised/confused a new pressure regulator did not fix it, all of the other LB7's that ive worked on that had these symptoms was for a bad regulator. I hardly drive this truck, so it probably has around 5 symptoms of failing injectors? Jump to Latest 133K views 40 replies 15 participants last post by B--S Jul 18, 2009. 0L Power Stroke Diesel - FICM symptoms/tests other than 48V check - I've reviewed a bunch of FICM posts but have only come across the one test which involves the voltage drop during cranking (from 48V). oeigd elsn wdplu jwwkc chbdvj vnjyo ytn puyc ukhfy terjhp