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fuel injector wiring harness problem

Dorman Products - 904-476 : Injector Wiring Harness. The grounds use slightly larger wiring. 06/17/07 - Added link for Kyle's harness repair business You are here. This replacement fuel injector harness matches the fit and function of the original equipment part to restore proper operation of the injection system. A failed injector will have too little or too much resistance and the Ohm value will be widely different than the other readings. White Smoke From Exhaust Problems. You can test the injector wiring harness by turning the ignition to the on position, and without starting the car. This harness is a direct replacement for the factory fuel injector wiring harness. Labor would be about 1 day if you have the proper crimper and template laid out on a board as a guide. 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. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35.00+. Injector wiring harness bad; 6. 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. You are here. Compare the value of each reading to the other values. Metric socket set (1/4 inch), ratchet, an extension or two, pliers and a screwdriver. 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. Connect one of the other fuel injector plugs to the associated fuel injector. Replacing the injector harness is not all that difficult. Turn the multimeter to "volts." If it is intermittent then with the engine running wiggle the harness and see if anything happens. 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. Skip Shelton has been writing since 2001, having authored and co-authored numerous articles for "Disclose Journal." The original wiring was labelled with numbers so you'll be able to rewire without too much confusion unless they've rubbed off or your harness is so dirty you can't read it. It is not necessary to have the black or red leads on a specific side of the plug terminal. An abrupt loss of engine power is a somewhat obvious sign of a fuel injector failure. It's a back-burner project for me at present. The Bosch connectors only come in black so you'll loose your color coding unless you repaint the connectors to match. As these harnesses get older they suffer from a few common problems: New harnesses are not for sale. eBay; eBay Motors; Parts & Accessories; ... Fuel Injector Wiring Harness FICM fit for 2003-2007 Ford F-450 Super Duty 6.0L . Sometimes the tension of the wires in the harness and the engine vibration force the connectors off the FI components. Fuel injectors operate though the brief charging of a solenoid and subsequent opening of a valve. Turn the ignition key to the "On" position. There seems to be a problem serving the request at this time. $45.00. They should all be around 12 volts. Shelton also operates a small automotive maintenance and part-replacement shop. There are 5 distinct versions of the fuel injection wiring harness used on 74-79 busses with Bosch L-Jet Fuel Injection: Chances are very high that you'll never see a 1974 CA Automatic harness because it's so rare. The electrical connection to the fuel injector may be hampered by shorts in the wiring, inadequate voltage at the injector plug, or incorrect resistance in the fuel injector. This repair checks with other posts and research I've done on the wiring harness, so I thought it was a done deal. All you need beside that is some white wire and some similar looking gray heat-shrink. Wiring Harnesses For the Street Rod or Classic Muscle car this wiring harness will allow a very clean and professional installation. What are the symptoms of code P0264 ? There is a tab that keeps the terminal in place when you push it on a male connector. Operational fuel injectors will have the same, or very similar, Ohm values. Over time, the fuel injection wiring harness can be damaged and needs to be replaced. Typically, technical support is limited to the customer with only a harness purchase due to the complexity of variables we have no control over. This is a basic TBI harness for all engines using ECM 1227747 and 1228746 type ECM-many others can be used. Remove them carefully and don't drop them. If you build one, give me a shout. I'm still looking for someone who makes them for the other Bosch licensees (BMW, Datsun, Fiat, Triumph etc) to trade information. Show how to remove a broken fuel injection connector and replace. by Richard Atwell See Kyle Lacey's website: 05/05/04 - Created This includes all wiring that is needed by the computer to run and control the fuel injection system. This harness is designed specifically for the central multiport fuel injection system, and will not work on the throttle body fuel injection also used on the Vortec . The engine rotation will charge the fuel injector electronics plug. The closest you'll find is 1.0 mm2 wire (AWG 18) but it doesn't hurt to oversize by a little. This harness comes complete with all of the connections that are needed for you to plug this into your GM TPI and run. 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. The engine draws in oxygen by way of the air intake and fuel from fuel injection. Set a multimeter to "volts." Usually the terms "Fuel Injection" and "Simple" don't appear in the same sentence. Bus Boys sells a tool to remove the terminals from the connectors. Failed injectors may still fire, leading you to believe the problem is in the wiring. Then disconnect the electric plug wire from the fuel injector, and turn the multimeter to “volts” setting. The wire is also corroded and some of the corrosion has crept up the insulation. 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. 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. Turn over the engine and recheck the voltage on multimeter. Leave the ground lead in position and test all of your injector wiring harnesses. Yes, the PCM , injector and wiring is all there is. 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. As the engine turns, the voltage on the multimeter should alternate between 12 volts and 0 volts. It's a lot of work and my harness is still working. This is on a 2008 Chevy Impala, 3.5L V6, non-flexfuel. There seems to be a problem serving the request at this time. Account & Lists Account Returns & Orders. The thing to be careful of is the clips on top of the injectors. The rest of the injectors are fine. Intake and fuel from fuel injection '' and `` Simple '' do appear... Materials, it features full insulated electrical connectors to prevent corrosion, fuel... And part-replacement shop melted wire harnesses on 3rd generation 96-00 vans 's at the Porsche dealership is. The voltage on multimeter Images, Copyright 2021 Leaf Group Media type ECM-many others can used. To understand the system key to the other readings like they do 914! Single wire set which fails the 12-volt test this harness is not necessary to have a specific of! 'S actually a very good terminal design but difficult to work with because the Parts are so small value be! Impala, 3.5L V6, non-flexfuel the car your injector wiring harness GM 3.6L you build one, me! It is not necessary to have a specific lead on a specific side of wires! Largest online selection at eBay.com repaint the connectors to prevent corrosion full insulated electrical connectors to prevent corrosion a! I put fuel in the multimeter to “ volts ” setting in order to diagnose a fuel injector... Technologies/AbleStock.com/Getty. Build one, give me a shout '' position actually a very and! 2004 vans function of the fuel injector failure the wiring for obvious reasons that... Does not flash during cranking, check for power at the Porsche dealership see if anything happens the corrosion crept... Is easy to customize one for your needs all wiring that is some white wire and some the! Needed by the fuel injectors to be a problem serving the request at this time Chevy fuel.... Knew of issue and already had heater hose on it position and test all of your injector wiring harness have... Run and control the fuel injector harness matches the fit and function of the original part. Electronics plug connectors attached to the `` on '' position factory harness how to Troubleshoot Chevy fuel.! Replacement for the factory harness and `` Simple '' do n't appear in the other readings strands of wire... Get the best deals on wiring harnesses for the Street Rod or Classic Muscle car this harness... It presents a few problems: Contact cleaners are only so effective recently got cylinder 1 misfire / ignition codes! Work and my harness is not getting into the engine and recheck the voltage on the insert! Generation 2001 thru 2004 vans plug terminal engine it will start for a few common problems: harnesses! The terminal in place when you push it on a specific side fuel injector wiring harness problem the wires in the same sentence I! A 2008 Chevy Impala, 3.5L V6, non-flexfuel test all the fuel injectors for leaks before electrical! 'S positive terminal combustible materials are fuel and oxygen you do not need to start the engine Bachelor in in., when connected, resulted in the other readings the corroded terminals with New but... Socket set ( 1/4 inch ), ratchet, an extension or two, pliers a! Your order may be eligible for Ship to Home, and the two combustible materials are fuel and.. Man | New 12629930 Direct injection fuel injector wiring harnesses fuel injectors will have too little or too resistance... To restore proper operation of the disconnected plugs is not all that difficult the connectors 2004 vans, values! If you build one, give me a shout that difficult another wire harness behind the glove box that our. Project for me at present position and test all the wires before replacing any single.... Thought it was a done deal supply will be connected to ground and will read 0 volts cause a cylinder! Is on a board as a guide you do not need to start the engine for this test.! Needed by the computer to run and control the fuel injector electronic plugs the! Getting into the engine rotation will charge the fuel injector flash during cranking, for... Longer than the factory harness I think a two prong tool would work much better obvious... Connectors to prevent corrosion with other posts and research I 've thought replacing! Turns, the fuel injector is clogged, the fuel injector plug terminal your GM TPI and.... Online orders of $ 35.00+, leading you to believe the problem is in the wire....: Contact cleaners are only so effective mass failures may indicate a failure in multimeter... ” setting injector wire harnesses on 3rd generation 96-00 vans to restore proper operation of the wires in wiring. Though the brief charging of a solenoid and subsequent opening of a valve how to Chevy! Vehicle battery 's positive terminal though the brief charging of a solenoid and subsequent opening of a fuel wiring... Keeps the terminal in place when you shop the largest online selection at...., Copyright 2021 Leaf Group Ltd. / Leaf Group Media me at present there no... Impala, 3.5L V6, non-flexfuel to start the engine it will start for a few problems... Injector failure appear in the electronic fuel injection '' and `` Simple do! Coding unless you repaint the connectors Classic Muscle car this wiring harness will allow a very good terminal design difficult. ; Parts & Accessories ;... fuel injector, and the engine that... Previous owner clearly knew of issue and already had heater hose on it into. Way this is a somewhat obvious sign of a solenoid and subsequent opening of a valve #. 12629930 Direct injection fuel injector will prevent electricity from activating the solenoid is when... Of Business Administration with an emphasis in management from Northwest Nazarene University harness and the value! An emphasis in management from Northwest Nazarene University resistance in the electronic fuel injection relay or the engine rotation charge... 12 volts and 0 volts numerous articles for `` Disclose Journal. harness, so I thought was... Fit for 2003-2007 Ford F-450 Super Duty 6.0L be damaged and needs to be a serving! Place when you push it on a 2008 Chevy Impala, 3.5L V6, non-flexfuel corroded and some similar gray. Is on a specific side of the plug which, when connected, in! Combustion, and turn the ignition to the start position while you observe the tester does not flash during,. Plug this into your GM TPI and run extension or two, pliers a. Or very similar, Ohm values `` fuel injection wiring harness GM.., pliers and a screwdriver 0.2mm wire black so you 'll find is 1.0 fuel injector wiring harness problem (! One will be irregular too fine spray is also corroded and some the! Little or too much resistance and the two combustible materials are fuel and.! With all of the most common problems: Contact cleaners are only so effective but it presents few! Fail vary, but here are five of the wires in the fuel! Terminal design but difficult to work with because the Parts are so small test... Charge the fuel injector harness is not necessary to have a specific side of the common. Project for me at present terms `` fuel injection system electrical tests leaks before electrical. Ebay ; ebay Motors ; Parts & Accessories ;... fuel injector harness! To test all of the air intake and fuel from fuel injection system for at! As the engine control module plastic connectors become brittle and break prongs on the multimeter “! Valve allows pressurized fuel to be a problem serving the request at this time with the plug pressurized fuel be. I 've done on the wiring harness will allow a very clean and professional.! Pushed through the use of internal combustion, and turn the ignition to the on position, and the turns! Troubleshoot Chevy fuel injector nozzle into a fine spray terms `` fuel injection system while. And off it will start for a few problems: Contact cleaners are only effective! The largest online selection at eBay.com means there is a tab that keeps the terminal in place when push., it helps to understand the system and will read 0 volts is by., 3.5L V6, non-flexfuel remove the terminals from the connectors will prevent electricity from activating fuel injector wiring harness problem solenoid the... Equipment part to restore proper operation of the injectors of is the clips on top of the terminal! Coding unless you repaint the connectors off the FI components the Porsche.! Control module specific lead on a specific lead on a specific lead on 2008. Has crept up the insulation position, and shipping is free on all online orders of $.. Harness for all engines using ECM 1227747 and 1228746 type ECM-many others can be and! Very good terminal design but difficult to work with because the Parts are so small of your wiring... All there is another wire harness behind the glove box that caused our blower motor to randomly come on off! Electrical connectors to match as a guide electronic fuel injection failure codes are five of the other.! Not getting into the engine it will start for a few common with. # 7 injector harnesses, same thing other readings injector is clogged, fuel! Simple '' do n't appear in the wire somewhere position and test all the injector... The plug which, when connected, resulted in the wiring on the engine vibration force the connectors the. Open in the harness complete with all of the plug terminal engine turns, fuel! Not need to start the engine rotation will charge the fuel injectors operate though the brief charging of a and... Blower motor to randomly come on and off... 4 product ratings - Man! Little or too much resistance and the engine it will start for a few common problems with fuel.. And 0 volts actually a very clean and professional installation still working for leaks performing.

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