Lb7 Ficm TroubleshootingWhen the engine is working hard, the turbocharger is drawing in a ton of air, and the restrictive stock turbo inlet tube can effectively choke the VGT turbocharger causing the compressor outlet temperature to skyrocket, heating up the intercooler, and ultimately raising the temperature of combustion and the coolant temp. 99% you have a wiring/harness problem. Dorman 904-229 Fuel Injection Control Module (FICM) Repair Kit Description Fitment Specifications Related Products Customer Reviews Question & Answers Frequently Bought Together Alliant Fuel Injection Control Module (FICM) Connector AP00XX FROM $34. Where to purchase replacement FICM?. I didn't think anything about it and when and started the truck and drove it around the block. Voltage aside, for whatever reason LLY FICMs won't talk to LLY ECMs, so I'd assume the opposite is true as well. 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. Andrew. Our module repairs are guaranteed to meet or exceed OEM performance at a fraction of the cost! To move forward with a repair, simply print off our intake form, fill it out, and send it in with your module. #1 I had to replace the o-ring on the pipe to the heater core. HAVE A 2001 GMC 2500HD DURAMAX. seconds, maximum per bank is 20 ml: check when cranking, with the FICM disabled, pressure should be 114 – 135 MPa during cranking. How to Diagnose and Repair 2001. While we specialize in model years 2001-2005, we're able to service/repair most model years. you probly don't have enough rail pressure at cranking , possible causes sensor, cp3 , etc , mine was pluged return line, cp3 will not pump if this happens : george. If a fault is detected in the driver circuits, the FICM will signal the ECM, and DTC P1658 will set. of torque, which made it extremely popular with truck owners in the. In this episode of Diesel Insights, DT's Nick Priegnitz explains the manufacturer shortcomings that. In this episode of Diesel Insights, DT's Nick Priegnitz explains the manufacturer shortcom. Have Chevy 2002 lb7 duramax need a diagram of fuel lines in. The FICM monitors the status of the ignition voltage circuits and the fuel injector command circuits. Start inspecting your fuel lines from filter head to CP3. I am going to do a compression check and see it time to do a LLY swap and a fully built engine. Fire it up and it sounds great. FICM Parts 515-897-4459 PHP Tune your FICM for better fuel economy, less turbo lag, and more power! HOME MODULE REPAIR & TUNING PARTS/ACCESSORIES FAQ & TIPS VIDEOS APPAREL Great Communication and service Truck fired right up BUSINESS HOURS: Monday - Friday 9-6 CST Saturday 1-6 CST Closed Sunday Follow Us! FICM Parts. 0L Powerstroke Alliant Fuel Injection Control Module Pigtail Connector AP003X. If you read from the power pin to the command pin, on the FICM plug going out to the injectors, and any of them are over 5 ohms, then you have found the circuit with the problem. 166K views 5 years ago You've heard about LB7 injectors and how they're prone to failure. It has an intermittent problem like this where it runs rough and sounds like it cut one bank of cylinders and won't hardly accelerate MAXX IT OUT <<03 all the sudden wont start, bad ficm?. So, to help LB7 owners keep their beloved diesel on the road for another 20 years, we’re breaking down the right way to diagnose and repair failing LB7 injectors. When I was putting the new o-ring on, it shorted out with the terminal on the back of the alternator. While we specialize in model years 2001-2005, we're able to service/repair most model years. The LB7/LLY system runs on a max of 23k, but as the FPRV ages, it can dump fuel rail pressure below the 23k and affect the engine performance. The only item I haven't changed out is the ECM. If you have a Ficm performance code, you need to check the voltage first. LB7s use 96volts, LLY 48volts, LBZ 24volts. com">LB7 no suction @ cp3 pump. Replace any that are in questionable shape. This is the highest quality replacement module on the market! Fits 2001-2004 Chevy / GMC 2500HD / 3500HD LB7. When the engine is working hard, the turbocharger is drawing in a ton of air, and the restrictive stock turbo inlet tube can effectively choke the VGT turbocharger causing the compressor outlet temperature to skyrocket, heating up the intercooler, and ultimately raising the temperature of combustion and the coolant temp. The other problem is the FICM harness-- It is secured at the side of the alternator with a Zip tie. The First Common-Rail Every common-rail diesel engine has the same basic parts to its fuel system, whether it’s a Cummins, Powerstroke, or Duramax. Description Fitment Shipping Remanufactured fuel injection control (F. Please help! possible FICM failure. You can use a scan tool to detect the FICM voltage. While we specialize in model years 2001-2005, we're able to service/repair most model years. Warmed her up, flushed water, added coolant, and changed oil/filter. The troubleshooting flow chart says that if both of these codes come up together, to go straight to the ficm. 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. I have replaced it, but still no luck. If the vehicle cranks long than normal and starts and runs rough, firstly we need to check the Ficm. I was told that I needed a new wire harness , replaced the wire harness replace the ficm replace the fuel pressure regulator replace the filter housing I prime it cranks wants to start but dies prime does not stay firm Reply Save Like long-time-dmax · #6 · Aug 15, 2022. An underhood inspection revealed that the previous shop that had worked on the car disconnected several wiring harnesses and had broken open the plastic loom cover to the Fuel Injection Control Module (FICM), which is bolted to the passenger-side valve cover. FICM Fuel Injection Control Module Repair. Check for a bad thermostat or water pump. We'll move forward with the repair and get your. If not, you're probably going to have to replace the fuel pressure regulator to get rid of the issue Chevy and GMC Duramax Diesel Forum. 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. The voltage should be between 46 to 48-volt range. This is the highest quality replacement module on the market! Fits 2001-2004 Chevy / GMC 2500HD / 3500HD LB7. You can definitely start by making sure your radiator is free and clear or debris, dirt or other gunk. By following the diagram, technicians can quickly and easily identify and replace any faulty components. FICM Parts 515-897-4459 PHP Tune your FICM for better fuel economy, less turbo lag, and more power! HOME MODULE REPAIR & TUNING PARTS/ACCESSORIES FAQ & TIPS VIDEOS APPAREL Great Communication and service Truck fired right up BUSINESS HOURS: Monday - Friday 9-6 CST Saturday 1-6 CST Closed Sunday Follow Us! FICM Parts. If that was read from FICM plug C2 pin 118 to pin 121 then each leg of that circuit would need to be tested individually. You've heard about LB7 injectors and how they're prone to failure. aFe BladeRunner Turbo Inlet Manifold The aFe Bladerunner Turbo Inlet Manifold increases performance to your Duramax by 23hp and 57lbs x f Dorman OE Solutions Duramax Exhaust Manifold (Left) 674-731 Dorman OE Solutions Duramax Exhaust Manifold (Right) 674-736 Engine Oil Pressure Sensor - Duramax Fuel Filter - 6. Our module repairs are guaranteed to meet or exceed OEM performance at a fraction of the cost! To move forward with a repair, simply print off our intake form, fill it out, and send it in with your module. So my question is as follows,Is it important to make sure you batteries are top shelf and not in the least down on voltage?:goodvsevil Click to expand You mistook injector triggering voltage for vehicle electrical system voltage. 5 LB7 Duramax Powertrain Please help! possible FICM failure. 6L Duramax LLY FICM Exchange. Have Chevy 2002 lb7 duramax need a diagram of fuel lines in filter housing or the whole fuel system got some mixed up and the vacuum hoses … read more. When a fuel injector circuit condition is detected by the FICM,. FICM Problems need help!!. Double check all the injector harnesses/FICM connectors/wiring FICM going bad is incredibly rare. Everything on this Truck from the filter head through to the injectors is new or reconditioned. 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. FICM voltages are LB7-96v, LLY-48v, LBZ-24v. Shut it down because had a coolant leak on the front of the engine (broke an o-ring). Chevy, Duramax, GMC, Diesel, Parts. Any way after replacing the FICM and checking the wiring harness it looks like the problem is with the injectors, on the drivers side. 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. This is the highest quality replacement module on the market! Fits 2001-2004 Chevy / GMC 2500HD / 3500HD LB7. LB7 no suction @ cp3 pump. If you have too much suction, after changing the fuel filter, the restriction could also be the sock in the tank. This is an internal circuit fault, and can not be caused by external failures. Specifications are for API rating of 40-44. 2001 ECM (powertrain control module) part #: 9388505 MSRP from GM: $1,765. JustAnswer">HAVE A 2001 GMC 2500HD DURAMAX. Drive it around and it’s running smooth until all the sudden it starts jerking on acceleration and went into limp mode. Shut it down because had a coolant leak on the front of the engine (broke an o-ring). Our module repairs are guaranteed to meet or exceed OEM performance at a fraction of the cost! To move forward with a repair, simply print off our intake form, fill it out, and send it. If you read from the power pin to the command pin, on the FICM plug going out to the injectors, and any of them are over 5 ohms, then you have found the circuit. 02DMAX-LB7 Discussion Starter · Apr 18, 2022 So I just removed EGR just to clean it and also installed 3 inch intercooler pipes and a new serp belt. com - Fuel Injection Control Module Repair and PHP Tuning. Associate of Occupational i 582 satisfied customers. LB7 Injector Failure Explained. LB7 injectors are located underneath the valve covers, and most of the labor time is spent on simply moving other stuff out of the way to gain access to the valve covers. *LIFETIME WARRANTY *Free return shipping *Fast turnaround time. 1) Excessive fuel restriction, check or change fuel filter 2) Use vacuum gauge, check the suction, you should have no more than 5 inches Hg at WOT (wide open throttle) or 7-8 inches Hg under load. I appreciate all your help! See more Reply Save Like 1 - 5 of 5 Posts. Lb7 Engine Wiring Diagram. If you can detect a high side fault for the eight injectors, your FICM needs to be replaced. Inspect your engine harness for any rubbed through wire insulation, broken wire, corrosion, loose connections, etc Click to expand Some codes that came up included u1800, p0090, p0193,p0380, p0540. 05 LLY Duramax FICM warning, problems and replacement with rebuilt unit to run again vassmotorsports 2. The other problem is the FICM harness-- It is secured at the side of the alternator with a Zip tie. While the LB7 is a reliable powerplant, over time, it began to show its weakness. 166K views 5 years ago You've heard about LB7 injectors and how they're prone to failure. First, you want to identify what is causing overheating on your LB7 Duramax. 99% you have a wiring/harness problem. You might try running a heavy dose or two of some cleaner/lubricant through your fuel system (I use PowerService in every tank on my LB7) to see if that helps the issue. One of the common symptoms that usually indicates a bad Ficm is a hard start. Start by disconnecting the battery cables from both batteries and draining the coolant. 229 Fuel Injection Control Module (FICM) Repair Kit">Dorman 904. 02DMAX-LB7 Discussion Starter · Apr 18, 2022 So I just removed EGR just to clean it and also installed 3 inch intercooler pipes and a new serp belt. Come join the discussion about performance, builds, ecodiesel, towing capacity, modifications, classifieds, troubleshooting, maintenance, and more! Full Forum Listing. This can lead to poor performance and poor fuel economy. The truck just randomly died on me at a stop light and would not start back up towed it back to my shop and truck fired right back up. The FICM monitors the status of the ignition voltage circuits and the fuel injector command circuits. Duramax LB7 Injector Failure Explained. Dorman 904-229 Fuel Injection Control Module (FICM) Repair Kit Description Fitment Specifications Related Products Customer Reviews Question & Answers Frequently Bought Together Alliant Fuel Injection Control Module (FICM) Connector AP00XX FROM $34. While the numbers may not seem that impressive by today’s standards, the LB7 Duramax produced a best of 300 horsepower and 520 lb. Symptoms Of Bad FICM Relay (Explained). you were right onturned out to be a bad connection at one of the injector plugs. GM only provides a specification for return fuel when cranking for LB7 engines, however, we have done some testing on a good running LB7 and found that injector. Duramax FICM Repair & Return. Inspect your engine harness for any rubbed through wire insulation, broken wire, corrosion, loose connections, etc Click to expand Some codes that came up included u1800, p0090, p0193,p0380,. The LB7 engine wiring diagram is an invaluable tool for troubleshooting any electrical issues related to the engine. You can encounter hard starts and slow running when the engine is cold. Our module repairs are guaranteed to meet or exceed OEM performance at a fraction of the cost! To move forward with a repair, simply print off our intake form, fill it out, and send it in with your module. I need a wiring diagram for the FICM ON MY 2002 Chevy Duramax LB7. I am going to do a compression check and see it time to do a LLY swap and a fully built engine. 03dirtyEFIlive Discussion Starter · May 29, 2013 (Edited) I have a 2003 duramax with the 6. Cut the tie and pull the wires out. LB7 FICM and Injector trouble. Duramax FICM Repair Fuel Injector Driver Module for LLY & LB7 Duramax engines SIA Electronics has many other repairs available. *LIFETIME WARRANTY *Free return shipping *Fast turnaround time Photo is a stock photo and may not fully represent the item listed. The truck just randomly died. 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. Is there a way to test Ficm. FICM Problems need help!! 11874 Views 13 Replies 7 Participants Last post by mray, Aug 20, 2018. Any way after replacing the FICM and checking the wiring harness it. Our trucks run on 12v, same as usual. In this episode of Diesel Insights, DT's Nick Priegnitz explains the. The FICM monitors the status of the ignition voltage circuits and the fuel injector command circuits. GM only provides a specification for return fuel when cranking for LB7 engines, however, we have done some testing on a good running LB7 and found that injector. Common Duramax Diesel Problems, Troubleshooting, and. Description Description Duramax FICM LLY FICM LB7 FICM Repair & Return Duramax FICM Repair Fuel Injector Driver Module for LLY & LB7 Duramax engines SIA Electronics has many other repairs available. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright. 05 LLY Duramax FICM warning, problems and replacement with rebuilt unit to run again vassmotorsports 2. We'll move forward with the repair and get your. Look for any kinks, dry rot, cracked lines etc. 3K views 6 months ago Weird ABS/TRAC FAULT (GM Truck Diag & Repair) Pine Hollow Auto. Shimming the FPRV can increase the bleed-off back to 23k or more, and it will still bleed of high rail pressure in case of a fuel spike. We'll move forward with the repair and get your vehicle back on the road. So, to help LB7 owners keep their beloved diesel on the road for another 20 years, we’re breaking down the right way to diagnose and repair failing LB7 injectors. You might try running a heavy dose or two of some cleaner/lubricant through your fuel system (I use PowerService in every tank on my LB7) to see if that helps the issue. LB7 injectors are located underneath the valve covers, and most of the labor time is spent on simply moving other stuff out of the way to gain access to the valve covers. While the numbers may not seem that impressive by today's standards, the LB7 Duramax produced a best of 300 horsepower and 520 lb. Remanufactured fuel injection control (F. Try to find out under what conditions the overheating occurs. You've heard about LB7 injectors and how they're prone to failure. Description Description Duramax FICM LLY FICM LB7 FICM Repair & Return Duramax FICM Repair Fuel Injector Driver Module for LLY & LB7 Duramax engines SIA Electronics has many other repairs available. aFe BladeRunner Turbo Inlet Manifold The aFe Bladerunner Turbo Inlet Manifold increases performance to your Duramax by 23hp and 57lbs x f Dorman OE Solutions Duramax Exhaust Manifold (Left) 674-731 Dorman OE Solutions Duramax Exhaust Manifold (Right) 674-736 Engine Oil Pressure Sensor - Duramax Fuel Filter - 6. 515-897-4459 Click image or text to view details LB7 FICM Exchange - '01-'04 6. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright. 0L Power Stroke Medium and Heavy Duty 1994-2003 7. If a fault is detected in the driver circuits, the FICM will signal the ECM, and DTC P1658 will set. The fuel injection control module (FICM) supplies high voltage to each fuel injector on the ignition voltage circuits. Duramax: Injector Circuit Diagnostics. LB7 injectors are located underneath the valve covers, and most of the labor time is spent on simply moving other stuff out of the way to gain access to the valve covers. This can lead to poor performance and poor fuel economy. If you read from the power pin to the command pin, on the FICM plug going out to the injectors, and any of them are over 5 ohms, then you have found the circuit with the problem. FICM ON MY 2002 Chevy Duramax LB7">I need a wiring diagram for the FICM ON MY 2002 Chevy Duramax LB7. 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. Duramax LB7 Injector Failure Explained - Diesel Insights. Start by disconnecting the battery. (800)737-0915 This is a repair & return for your Duramax FICM. I need a wiring diagram for the FICM ON MY 2002 Chevy Duramax LB7 Ask an Expert Car Questions Chevrolet Repair I need a wiring diagram for the FICM ON MY 2002 Chevy Chris (aka-Moose), Technician Chevy Chris (aka-Moose), Technician 79,885 Satisfied Customers 24 years of experience diagnosing & repairing Chris (aka-Moose) is online now. This was taken from an earlier post. NOTE: Before replacing a FICM for an injector. 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. Start inspecting your fuel lines from filter head to CP3. Signs & Symptoms Of Bad FICM Relay (Explained). 2001-2004 LB7 FICM (Injector Module) part #: 97720663 MSRP from GM: $1,132. 13915 Views 4 Replies 3 Participants Last post by jc1843 , May 31, 2013 0 03dirtyEFIlive Discussion Starter · May 29, 2013 (Edited) I have a 2003 duramax with the 6. 23 new (both have an insane shipping fee, however). Common Duramax Diesel Problems, Troubleshooting, and ">Common Duramax Diesel Problems, Troubleshooting, and. seconds, maximum per bank is 20 ml: check when cranking, with the FICM disabled, pressure should be 114 – 135 MPa during cranking. Add to quote; Share Only show this user. I was told that I needed a new wire harness , replaced the wire harness replace the ficm replace the fuel pressure regulator replace the filter housing I prime it cranks wants to start but dies prime does not stay firm Reply Save Like long-time-dmax · #6 · Aug 15, 2022. If you have a Ficm performance code, you need to check the voltage first. 1) Excessive fuel restriction, check or change fuel filter 2) Use vacuum gauge, check the suction, you should have no more than 5 inches Hg at WOT (wide open throttle) or 7-8 inches Hg under load. seconds, maximum per bank is 20 ml: check when cranking, with the FICM disabled, pressure should be 114 – 135 MPa during cranking. Berge9798 Discussion Starter · Dec 26, 2014. of torque, which made it extremely popular with truck owners in the early 2000s. com">Where to purchase replacement FICM?. I also had bought a FASS 150, So went to install that last. (800)737-0915 This is a repair & return for your Duramax FICM. We'll move forward with the repair and get your. let it run for a bit and everything seemed fine then all of a sudden died. Fixed it and fired it back up and ran WAY better than it had with a bad head gasket. Its throwing a u1800c code which is lost communication with Fuel. I need a wiring diagram for the FICM ON MY 2002 Chevy Duramax LB7 Ask an Expert Car Questions Chevrolet Repair I need a wiring diagram for the FICM ON MY 2002 Chevy Chris (aka-Moose), Technician Chevy Chris (aka-Moose), Technician 79,885 Satisfied Customers 24 years of experience diagnosing & repairing Chris (aka-Moose) is online now.