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How to replace fuel injector sensor - 2004 Chevrolet Malibu

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Accord 91 nostart cranks spark at plugsNo fuel coming from injectors pressure at fuel rail. code 14humming sound fromeckey turned to on position.already replaced main fuel relay coil dis cap and rotor


chexk to see if ur antitheft isnt keeping ur injectors from coming on. also check camshaft sensor that what controls injector pulse along with ur ckp sensor.crankshaft position sensor

Jun 28, 2015 | Cars & Trucks

1 Answer

No Injector Pulse


run fault codes as there is a problem sensor in the system. volts at the injector is suspect as the voltage will vary with the fuel requirement.

Jan 05, 2014 | 2005 Mazda Tribute

1 Answer

Injector not working why put new injector new computer new fuel pump does it have injector relay 1987 celebrity


Check fuel pressure. Have you replaced the fuel filter on schedule? Verify that the fuel pump is getting power. Power goes through an in-line fuse, then the fuel pump relay or the oil pressure sensor. (The relay bypasses the oil pressure sensor while the engine starts, but fuel pump power goes through the sensor during normal run operation. If you lose oil pressure, the fuel pump is shut off to protect the engine.) On four-cylinder models, the fuse is in the fuse block (E PUMP 10)
The fuel injectors are connected to the ECM fuse on one side and straight to the engine computer on the other side. Check the connectors and wiring, especially at the injector.

Aug 26, 2011 | 1987 Chevrolet Celebrity

2 Answers

Runs terrible, p1391 is the code, replaced computer, replaced distributor, replaced crank sensor 2 times, new wires and plugs, new timing chain set, great compression,tps, ais, map, all replaced....


since you've replaced all the expensive components 1st.i suggest you look towards clogged fuel injectors next.try some sea foam,add it to your fuel tank to clean the fuel injectors.your computer tells the injectors and the crank sensor tells them when to pulse. you may only have partially clogged fuel injectors or water in the fuel.the seafoam will dry up any moisture in your fuel tank and also unclog fuel injectors. lucas fuel injector cleaner is what i usually recommend,but your issue call for extreme cleaning. try the seafoam,it costs $7.99 per bottle and treats 25 gallons of fuel.follow the instructions on the bottle.but if you suspect alot of water in the fuel tank,i suggest clear rubbing alcohol !/2 bottle to your fuel tank directly.it will not hurt the engine,but will remove excess water from the gas tank. thank you,for choosing fixya.com!

Apr 14, 2011 | 1996 Jeep Grand Cherokee

2 Answers

I have a 1994 gmc 1500 truck with a 5.7 v8.one fuel injector is pumping fuel and the other injector is not!!!!i swapped the injectors and its not the injector.


Go to the parts store and get a noid light for your truck, plug it into the injector electrical and turn the engine over to see if there is electrical pulse, also check the fuel pressure, the pump needs 9-13 psi with the engine running. you know if there is no pulse your going to need to check the wireing first. let me know

Feb 10, 2011 | 1994 GMC Sierra

2 Answers

Hi my 2006 cadillac cts has error codes po 300 303 305 343 347 368 392 and 496 can u tell me what they are or a website to find out thank u


P0300 is multiple engine misfire detected
P0303 is misfire in cylinder 3
P0305 is misfire in cylinder 5
P0343 is camshaft position sensor A (bank 1)
P0347 is camshaft position sensor A (bank 2)
P0368 is camshaft position sensor B (bank 1)
P0392 is camshaft position sensor B (bank2)
P0496 is EVAP Canister Purge System High Purge Flow

Jan 28, 2011 | 2006 Cadillac CTS

1 Answer

Replace fuel inj 2009 lincoln ls 3.9 eng


Check this procedure about V8 3.9L Fuel Injectors - Removal & Installation
  1. Before servicing the vehicle, please familiarize yourself with safety procedures.
  2. Relieve fuel system pressure.
  3. Remove or disconnect the following:
    Negative battery cable Engine appearance covers Fuel lines Fuel pressure regulator Fuel cross over elbow Fuel injector connectors Fuel injector clamping plates Fuel injectors
To install:
  1. Install or connect the following:
    Fuel injectors. Use new O-ring seals. Fuel injector clamping plates Fuel injector connectors Fuel cross over elbow Fuel pressure regulator Fuel lines Engine appearance covers Negative battery cable
  2. Start the engine and check for leaks.

  1. Before servicing the vehicle, please familiarize yourself with safety procedures.
  2. Disconnect the negative battery cable.
    CAUTION The engine appearance cover is equipped with a noise suppressor. If the noise suppressor becomes separated from the engine appearance cover it must be positioned on the intake manifold prior to installing the engine appearance cover.
  3. Remove the engine appearance cover and the noise suppressor, if detached.
  4. Remove the air cleaner outlet pipe.
  5. Release the fuel system pressure.
  6. Remove the four engine appearance cover mounting bracket nuts and the brackets.
  7. Disconnect the fuel pressure sensor electrical connector from the sensor.
  8. Disconnect the fuel pressure sensor vacuum connector from the sensor.
  9. Disconnect the eight fuel injector electrical connectors from the injectors.
  10. Disconnect the fuel temperature sensor electrical connector from the sensor.
  11. Disconnect the fuel supply tube retaining clip from the fuel injection supply manifold.
  12. Disconnect the fuel supply tube spring lock coupling.
  13. Remove the four bolts and the fuel injection supply manifold and fuel injectors as an assembly.
  14. Remove the fuel injectors from the fuel injection supply manifold.
    CAUTION Use O-ring seals that are made of special fuel-resistant material. Use of ordinary O-ring seals can cause the fuel system to leak. Do not reuse the O-ring seals.
  15. Remove and discard the 16 O-ring seals from the fuel injectors.

    zjlimited_467.jpg

    Fig. Exploded view of the fuel injector mounting-3.9L engine shown

To install:
  1. Lubricate the new fuel injector O-ring seals with clean engine oil before installing.
    CAUTION Use O-ring seals that are made of special fuel-resistant material. Use of ordinary O-rings can cause the fuel system to leak. Do not reuse the O-ring seals.
  2. Install sixteen new O-ring seals onto the fuel injectors. Lubricate the O-ring seals with clean engine oil prior to installation.
  3. Install the fuel injectors and clips onto the fuel rail.
  4. Install the fuel rail and injectors as an assembly. Tighten the fuel rail bolts to 89 inch lbs. (10 Nm).
  5. Install the remaining components in the reverse order of removal.

Keep us updated.

Jan 14, 2011 | 2002 Lincoln LS

1 Answer

Fuel injector won't allow gas to flow into engine, have spark, have fuel psi. All fuses ok. OBD connection won't connect to reader can't get codes.


    Test fuel injector pulse and supply voltage output (test is used for most cars). This test will tell you if the computer system has operating voltage and injector trigger signal. Remove an electrical connector from a fuel injector (it doesn't matter which injector) probe both sides of the connector with a grounded test light
    (there are only two terminals). Have a helper turn the key to the "on" position without cranking the engine and observe the test light. The test light should illuminate one side of the connector only. Next, switch the test light lead to the positive side of the battery to test the system ground injector trigger, probe the side of the connector that did not light up, have a helper crank the engine over and observe the test light, it should blink on and off. If this test checks ok continue to next step. (Note: if no injector pulse is present try disconnecting the remainder of injectors and re-test, if a fuel injector is shorted it can shut down the injector driver causing no injector pulse. If injector pulse returns plug injectors electrical connectors in one at a time until the pulse fails and replace that injector)

    If this test revealed that there was no pulse but system has power the ECM is not generating a fuel injector trigger. If there is no trigger to the fuel injector it will not allow fuel to enter into the engine. Some of the most popular reasons that can cause this condition include a shorted crankshaft angle sensor, shorted camshaft position sensor or shorted ECM/PCM. (When a system trouble code scan is performed it does not always catch a crankshaft angle sensor, camshaft position sensor failure). Tip: try disconnecting all non-essential sensors, example: oxygen sensor, coolant sensor, throttle position sensor, air intake temperature sensor, mass air flow or map sensor and EGR valve pressure differential sensor. Crank the engine over, if the injector pulse returns, one of the sensors is shorted causing the system to not operate. Plug the sensors in one at a time until the injector pulse fails then replace that sensor and reassemble.
    click on this link directly for more details
    This will help. Thanks please keep updated.please do rate the solution positively .thank you for using fixya

Jan 30, 2010 | 1996 Volkswagen Golf

2 Answers

Injectors are not opening on a 1992 buick century 3.3


I have been told on some cars that the cam sensor provides the pulses for the fuel injection. Hope it works for Ya!!

Jan 19, 2009 | 1992 Buick Century

1 Answer

P2196,pcm replaced,o2 sensor replaced,maf replaced,engine head replaced,injectors replaced,code still there and engine missfire


HI
P2196 REFER TO THE O2 SENSOR ONLY ???
the most cause of it :-
o2 sensor
fuel pressure
fuel injectors
air intake restricted

check for that and ask me for more information
with my best wishes

Jul 31, 2008 | Mazda MAZDA3 Cars & Trucks

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