by Richard Atwell Melted injector wire harnesses are effecting early 4th generation 2001 thru 2004 vans. Sometimes the tension of the wires in the harness and the engine vibration force the connectors off the FI components. The Bosch connectors only come in black so you'll loose your color coding unless you repaint the connectors to match. It's a back-burner project for me at present. We offer LS / LT swap harnesses for all Gen 3, 4 and 5 LS / LT engines including LS1, LS2, LS3, LS6, LS7, LSA, LS9, Gen 5 V8, LT1, LT4 ,LQ4, LQ6, L99, Vortec variants - DOD, VVT, AFM. General Motors details a chafing problem in the FICM wiring harness (TSB #09-06-04-034) as it passes behind the alternator mounted on the front passenger side of the engine. That was diagnosed by a diesel specialist (call him mechanic #1) as being due to a loose fuel injector wiring harness and injector caps, which they tightened; though they gave me no CEL code at that time. Air intake restriction; Cam – crank sensor; Diesel injector/s bad; EGR problems; High pressure pump bad; Injector blow-by seat leaking; Injector wiring harness bad; Low fuel pressure; Turbo problems – waste gate; 7. How to Troubleshoot Chevy Fuel Injector ... Hemera Technologies/AbleStock.com/Getty Images, Copyright 2021 Leaf Group Ltd. / Leaf Group Media. If there is any resistance then the tab is still engaged and any extra force will cause it to bend over and break when you try to bend it back. Read the multimeter. To test to see if injector #6's Ground circuit (wire) is shorted to Ground inside the engine's Wiring Harness, the wiring between the PCM and the ‘Spider’ assembly needed to be isolated. Basic connections are standard but it is easy to customize one for your needs. Test all the fuel injector Ohm readings. 09/07/11 - Fixed broken photos, added translate button, updated footer The wire is also corroded and some of the corrosion has crept up the insulation. Compare the value of each reading to the other values. The solenoid is engaged when a 12-volt current is provided by the electronic fuel injection system. This replacement fuel injector harness matches the fit and function of the original equipment part to restore proper operation of the injection system. Usually the terms "Fuel Injection" and "Simple" don't appear in the same sentence. The opened valve allows pressurized fuel to be pushed through the fuel injector nozzle into a fine spray. Connect the multimeter's red lead to one of the disconnected plugs. Continue attaching more plugs and retesting until all plugs are attached or until the multimeter fails to display a 12 volt to 0 volt alternation. If the tester does not flash during cranking, check for power at the harness. A lower reading means there is excess resistance in the wire somewhere. Order Fuel Injector Connector for your vehicle and pick it up in store—make your purchase, find a store near you, and get directions. If you don't see the wiring harness you need listed below, please call us - we have harnesses for almost all Chevy V8 and V6 gas engines, and for all LS-x based combinations from 1998 - … Get the best deals on Wiring Harnesses Fuel Injectors when you shop the largest online selection at eBay.com. You are here. Replacing the injector harness is not all that difficult. Be sure to test all the wires before replacing any single set. The terminals in the connectors oxidize as does the exposed wire and some of the wire covered by insulation, The double relay and ground terminals corrode as well, There is always a risk of breaking the original connectors and tearing boots. This harness is a direct replacement for the factory fuel injector wiring harness. This injector harness is longer than the factory harness. Because you are testing the current it is not necessary to have a specific lead on a specific side of the plug. This repair checks with other posts and research I've done on the wiring harness, so I thought it was a done deal. Try Prime. The engine draws in oxygen by way of the air intake and fuel from fuel injection. (c) Copyright 2004-2020. Replace the injector if the Ohm value is significantly different than other injectors. There seems to be a problem serving the request at this time. Swapped #2 and #7 injector harnesses, same thing. The closest you'll find is 1.0 mm2 wire (AWG 18) but it doesn't hurt to oversize by a little. Insert the black and red multimeter leads on the sides of the fuel injector and read the multimeter. Recently got cylinder 1 misfire / ignition failure codes. All of the parts are readily available except the large ECU connector: I'm still looking for that but given that it's pretty durable and the terminals inside are available, a donor harness will more than do for a rebuild. Leaking injectors may cause fire hazards. :-). Made of quality materials, it features full insulated electrical connectors to prevent corrosion. As far as tools, not much really. The terminals in the connectors oxidize as does the exposed wire and some of the wire covered by insulation Inspect the fuel injectors for leaks before performing electrical tests. This problem is caused by a poorly designed metal mount for the harness and requires a thorough inspection of the FICM harness where it passes behind the alternator. An abrupt loss of engine power is a somewhat obvious sign of a fuel injector failure. A failed injector will have too little or too much resistance and the Ohm value will be widely different than the other readings. eBay; eBay Motors; Parts & Accessories; ... Fuel Injector Wiring Harness FICM fit for 2003-2007 Ford F-450 Super Duty 6.0L . Labor would be about 1 day if you have the proper crimper and template laid out on a board as a guide. The wiring harness to the PCM is rarely a source of the problem, which is a good thing since this harness can be hard to gain access to on most vehicles. Replace the injector associated with the plug which, when connected, resulted in the multimeter test failure. The strong ones are often harmful to plastics which mean you'd have to remove every terminal from it's connector to apply the solvent or sacrifice a spare connector to test to potency of the cleaner. Injector wiring harness bad; 6. It is not necessary to have the black or red leads on a specific side of the plug terminal. Dorman Products - 904-476 : Injector Wiring Harness. I think it has something to do with the wiring connection to the fuel injector because when the wires are in the plastic connector it won't start, but if I do a direct connection to the fuel injector … Our Engine Wiring Harnesses change that. You are here. Amazon.com: fuel injector harness. Shelton also operates a small automotive maintenance and part-replacement shop. If they were they might cost $900 like they do for 914's at the Porsche dealership. See Kyle Lacey's website: 05/05/04 - Created Skip to main content.us. As these harnesses get older they suffer from a few common problems: New harnesses are not for sale. There seems to be a problem serving the request at this time. They should all be around 12 volts. You do not need to start the engine for this test. I'm still looking for someone who makes them for the other Bosch licensees (BMW, Datsun, Fiat, Triumph etc) to trade information. Place the multimeter leads into the fuel injector plug terminal. If you build one, give me a shout. If I put fuel in the engine it will start for a few seconds and then cut out. Remove them carefully and don't drop them. This is on a 2008 Chevy Impala, 3.5L V6, non-flexfuel. Get the best deals on Wiring Harnesses Fuel Injectors when you shop the largest online selection at eBay.com. Check here for special coupons and promotions. 07/15/19 - Google update: new adsense code, removed defunt translate button There is another wire harness behind the glove box that caused our blower motor to randomly come on and off. 00:00. Either way this is less than ideal compared to rebuilding the harness. Failed injectors may still fire, leading you to believe the problem is in the wiring. Speartech is your LS & LT wiring harness swap specialist. Keep the multimeter attached to the plug. Metric socket set (1/4 inch), ratchet, an extension or two, pliers and a screwdriver. Note the value or write it down. Typically, technical support is limited to the customer with only a harness purchase due to the complexity of variables we have no control over. Leave the ground lead in position and test all of your injector wiring harnesses. All you need beside that is some white wire and some similar looking gray heat-shrink. Unplug one of the wiring-harness connectors attached to the fuel injectors. Yes, the PCM , injector and wiring is all there is. Connect the black multimeter lead to the vehicle battery's positive terminal. I've thought about replacing the corroded terminals with new ones but it presents a few problems: Contact cleaners are only so effective. That's not to say there haven't been a few melted wire harnesses on 3rd generation 96-00 vans. What are the symptoms of code P0264 ? Account & Lists Account Returns & Orders. The wiring harness will have two terminals that the prongs on the injector insert into. The reasons fuel injectors fail vary, but here are five of the most common problems with fuel injectors. Connect one of the other fuel injector plugs to the associated fuel injector. The other should read around 12 volts. Set a multimeter to "volts." Show how to remove a broken fuel injection connector and replace. The voltage should read approximately 12 volts. Mass failures may indicate a failure in the electronic fuel injection relay or the engine control module. 06/17/07 - Added link for Kyle's harness repair business If you notice your vehicle is idling roughly or misfiring or your engine isn't performing normally, be sure to check your fuel injection system, including your fuel injection wiring harness. The rest of the injectors are fine. This harness comes complete with all of the connections that are needed for you to plug this into your GM TPI and run. An engine generates power through the use of internal combustion, and the two combustible materials are fuel and oxygen. This is a "Factory Replacement Custom Fuel Injector Harness" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. Found a yellow wire in a bundle under air intake that had some chafing, cut and re-spliced, ran for 5mins then conked out again. It's a lot of work and my harness is still working. 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