Model glow plug engines are extremely dependent upon the type and quality of the glow plug used. Also in case your wondering the left driver side bank is 2468 front to back and right side 57 front to back. Chevrolet silverado 3500 questions scanner code p0380. Problems can be solved much more easily when civility is kept intact. The preheat, starting and postglow phases of a glow plugs operation affect not only the startup function. Found a loose wire between bar one on driver side and bar 2 on pax, but made no difference. The goldcolored lb7 glow plugs are 12volt heaters that are energized prior to starting the. Need help wiring on glow plug controller diesel place.
If you have a 2004 duramax you will need to verify if it is an lb7 or lly. Dec 21, 2017 lb7 duramax glow plug module relay easy fix joe fragoso. If you are planning to change the glow plugs in your duramax, it is quite common that you will also need the glow plug straps, especially if you live in the northern states where salt often causes them to rust to the point of total breakage. Howto correctly remove a stuck diesel duramax glow plug youtube. Glow plug kits free delivery possible on eligible purchases. The gm 12639701 glow plug is a direct replacement for your 20062016 gm 6. May 20, 2003 to get the low end right you must use a glow driver.
You will need to go in from the fender well and remove the nut that fastens the glow plug wire to the glow plug using an 8mm. Bosch glow plugs are critical for starting up a diesel engine. You may need to replace worn out or broken glowplugs. Sometimes it is a damaged controller that is the root cause of frequent glow plug failure. Lb7 glow plug lb7 glow plug works with 2001 to 2004 lb7 chevygmc 25003500 glow plugs are one of the most important components when trying to start a diesel. I have one wire that runs from the glow plug controller to the intake heater.
Power stroke glow plug problem how to fix it this time of year, when temperatures get low, it can be especially critical that the glow plug system is working properly. Ceramic glow plugs also help with shorter heatup times and a. With a goal to keep you on the road 24 hours a day 365 days a. For nearly twenty years, we have dedicated ourselves to becoming the go to resource in the duramax and allison line of diesel automotive products. Usually bad or failing glow plugs will produce a few symptoms that can alert the driver of. Its located on the drivers side valve cover near the turbo. Enya glow plugs use a platinum alloy coil, which uses a thick diameter wire for long life. Open or high resistance can cause short cycle times with the later ford solid state controllers. On the relay, the lead on the driver side stays hot all the time but the lead. Replacing failed glow plugs can eliminate check engine lights and hard starting. Glow plugsall duramax engines use one glow plug per cylinder. Chevroletgmc diesel diagnostics oregon fuel injection. This time of year, when temperatures get low, it can be especially critical that the glow plug system is working properly.
Rockauto ships auto parts and body parts from over 300 manufacturers to customers doors worldwide, all at warehouse prices. This oe replacement is built to the same high quality standards as the original components that were installed on your truck from the factory. Dormans diesel glow plug power strap effectively transfers electrical power to the glow plug system, ensuring that the combustion chamber heats up properly up during cold weather. On the early lb7 duramax, the glow plugs were energized by a relay which was directly controlled by the ecm. Lb7 duramax diesel glow plug intake air heater relay. Aug 15, 2010 remove the glow plug nuts from the desired glow plug s.
Jul 01, 2008 glow plugsall duramax engines use one glow plug per cylinder. The thicker wire coil also eliminates the need for an idle bar as found on other brands of glow plugs. The latest bosch versions feature an improved body no cracking, a hardened, chrome. Power stroke glow plug problem how to fix it diesel iq. This is the best way i have found to change glow plugs on these chevys. If your glow plugs or intake air heater is not working on your duramax engine, one of the problems could be a blown fuse. This fuse protects the main power circuit to the glow plugsintake air heater iah. Another reason why we need to know what you have to tell you how to test it. Buy dorman 904109 diesel glow plug power strap for select chevrolet gmc models. Lb7 duramax glow plug module relay easy fix youtube. Diesel engines are up to 30% more efficient than gasoline engines, they use high compression to ignite the fuel rather than spark plugs. As the glow plugs and their timer play a major role in starting the vehicle, when any of those components have a problem, it can cause driveability issues with the vehicle. If nothing happens and you didnt just adjust it leaner, richen it up because it is probably too lean or right next to too lean.
If putting the glow driver on the plug of an idling engine causes it to speed up, the low end it too rich. View chevy and gmc duramax glow plug control module, location, and replacement with california emissions. Goodyear wrangler sa 2657516 nasta nerf bars, catchall mats. If there is voltage, ohm the glow plugs with the wires disconnected. This on going mission of providing expert knowledge and solutions is driven by our unwavering dedication to supporting our customers. Many often overlook the importance of these controllers and tend to only replace the glow plugs after failure. If the eighth digit of the vin is a 1 then you have an lb7 and these plugs will fit. Replacing the drivers side glow plugs in absolutely horrible on my chevy. In most cases, we do not generate application lists. Usually a bad or failing glow plug will produce a few symptoms that can alert the driver of a potential issue. Usually bad or failing glow plugs will produce a few symptoms that can alert the driver of a potential issue. Duramax lb7 2001 2004 premium dual coil glow plug kit includes. Designed using stateoftheart technology and with customers in mind.
The goldcolored lb7 glow plugs are 12volt heaters that are energized prior to starting the engine, and they may also be operated for. This product is made of highquality materials to serve you for years to come. Nov 24, 2018 one thing the 0104 lb7 duramax is notorious for is injector failure. Good year wrangler sa 2657516 nasta nerf bars, catchall mats. This is normally a bad relay, but can also be a bad fuse. Nov 23, 2012 view chevy and gmc duramax glow plug control module, location, and replacement with california emissions. Glow plugs use an electrode which will warm up and glow orange when current is applied. In this video, eric shows how to remove a stuck glow plug without breaking it. The relay is engineered from highquality materials for longlasting durability. Watch 20012004 duramax lb7 p0380 code, glow plug relay. The camshaft drivetrain is uniquely located at the rear flywheel side of.
Check the fuel lines on the drivers side valve cover and between the. Duramax diesel electronics diesel tech diesel power magazine. On the federal emissions equipped vehicles there is a buss bar 2 connecting the glow plugs on each bank of the engine. Is your duramax proving difficult to start on cold mornings. Usually a bad or failing glow plug will produce a few symptoms that can alert the. Caution must be taken in order to not break the glow plug off in the cylinder. I have one wire that runs from the glow plug controller to the driver side glow plug bus bar on the rear and then there is a wire the runs from the passenger side bus bar to the front of the bus bar on the drivers side. When the glow plugs have an issue, they can usually cause problems with the driveability of the vehicle. Dreaded p0380 after replacing glow plug controller chevy.
Verify the fuel injector return line pressure is greater than 3 bar see fuel. Engineered from highquality materials for longlasting durability. As you can see on the bar the nipples are really long and slide through the rocker box holes enough to reach the plugs. Dreaded p0380 after replacing glow plug controller. The solenoid style bosch units found in the lb7 employed a nonhardened internal ball seat to seal the. An essential replacement item, dormans diesel glow plug relay properly heats the vehicles glow plugs, ensuring that your diesel engine starts smoothly and reliably in cold weather. Replacing the glow plugs on a 2003 chevy silverado 2500 6. Locate the glow plug controller to the driver side of the turbocharger near the.
If the reading is high or open, the glow plug is bad. The power stroke diesel engine relies heavily on the glow plug system. Remove the glow plug nuts from the desired glow plugs. We dismantle the new duramax l5p engine to see what makes it tick and give a. Check the oil level, lb7 engines have the injectors under the valve cover and are very. A p0380 on a cali truck means there is either a failed glow plug or no power coming out of the glow plug controller. Ati super dampers are the best dampers in the automotive industry hands down. Rather than produce a spark like a spark plug, however, glow plugs create heat which causes diesel fuel to combust and the diesel engine to start and run.
Glow plug controllers for improved diesel performance. No matter where you take the truck for the job or whoever performs the work, make sure you install brandnew, genuine bosch injectors. If it is a cali emssions truck, it is a whole differrent animal all together and powers each glow plug individually. Symptoms of bad or failing glow plugs yourmechanic advice. Hello anyone, my truck is giving only one code p0380, however truck cranks but wont start. Duramax diesel electronics diesel tech diesel power. Apr 23, 2011 lb7 glow plug lb7 glow plug works with 2001 to 2004 lb7 chevygmc 25003500 glow plugs are one of the most important components when trying to start a diesel. Dieselrx supplies top quality glow plug controllers for various applications. Common issues and problems we see in the shop with the lb7. Lb7 duramax glow plug module relay easy fix joe fragoso. Also need to know if it is a federal or california emissions truck if it is an lb7.
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