Question about 1994 Dodge Intrepid

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Number 1 fuel injector has no power

Number 1 injector not getting power

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Check for ground if none the faulty ecm

Posted on Apr 17, 2009


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Fuel injector diagram

old post
no engine stated, ?? which one? 4AFE or 7Afe (TOY ENGINE)
the harness will not allow cross wiring injectors
how did you do that?
the #1 injector is on #1 cylinder
and on #1 fuel rail port.
the #1 cylinder on inline engines, the crank pulley end.
if you need wire colors, we can do that too.
or log in to mitchells DIY and read. that.
here is the 7aFE wires
B-O is 12vdc power key on, the ECU fires the 4 on right.

23865545-flsdwf0rx41rbdaez4cmhnol-2-0.jpg end old post day.

Mar 19, 2014 | 1993 Geo Prizm

2 Answers

No fuel injection

If Ignition power is at all injectors then it's not a fuse issue . The computer triggers a negative pulse to the injectors to get them to trigger. If there is no negative pulse to 1 and 4 then most likely it could be a wiring issue or computer fault. Regards

Jan 06, 2014 | Fiat X1/9 Cars & Trucks

1 Answer

Hi I hav a 1998 108d vito it seems to hav excces fuel goin to injectors makin it lose power and smoke alot hav took return pipe of number 1 injector the 1 that goes bak to filter and its pumping alot of...

fuel injection pump has problems--a small amount of 2 stroke oil can clean engine--go to magicmechanic online-hes an expert-mail him-hes in the states

Dec 31, 2013 | Cars & Trucks

1 Answer

Misfire from cylinder 1 and fuel injection stuck open

One problem will cause another in this case. You can try to just change the fuel injector in the number 1 cylinder and see if the misfire straightens out.

You can use a test light to see if there is a pulse in the wire harness to the number 1 injector. Or there are plug-in lights which attach to the head of the injector harness to show firing of the injectors. Either way, th pulse should be a timed intermittent burst to that 1 cylinder when it is time to fire, just a spark goes to a sparkplug in intermittent bursts.

The crankshaft or camshaft sensor should send divided, pulsed signals to open the injector for fuel release. If the injector is jammed so that it does not go back to its seated position, you will get excessive fuel inside the engine when it is off. The fuel will bleed down into the crankcase and dilute the oil over time. This ruins an engine.

The fuel system normally remains pressurized and when the engine is turned off; the fuel will leak into the cylinder that is not shut. You may have to change the sparkplug as it can be gas-fouled by now. An oil change would be a good idea after you change the injector.

May 07, 2012 | 2004 Pontiac Grand Prix

1 Answer

1996 f-350 power stroke 7.3 4x4 standerd stalls have changed all sensors and fuel injecter mod and it still stalls

Have you changed the fuel filter? Check your fuel pressure for whether you have a bad pump. Try checking the fuel lines for drawing air. Check for a crankshaft or Camshaft sensor being bad.

The Injector Module you installed depends on getting a signal to fire the Injectors. It needs good pressure from the pump and a good fuel line to the pump. Mechanical injectors relied on timing the gears of the pump to inject at the right time; the electronic injectors need to sense the position of the crank and cam.

This in basic form will deliver fuel to say Number 1 piston, and then it refines the process to deliver fuel at so many degrees TDC so you get the optimum power from the fuel. You need to check this timing as it is how a mixture is made rich or lean.

The stuff you have already done may be perfect, but a frozen Turbo or bad timing in the crank to cam parts will give you similar problems.

Dec 13, 2011 | Cars & Trucks

1 Answer

Giving a 300 and a 301 code where do i start sounds fine when started and then when you put in gear it start misfiring

P0300 - Random / Multiple Cylinder Misfire Detected

Possible Causes:
- Improper spark plug
- Insufficient compression
- Incorrect fuel pressure
- The injector circuit is open or shorted
- Fuel injectors may be faulty
- Intake air leak

Possible Solutions:
- Perform Injector Service
- Replaced Spark Plugs
- Replaced Injectors
- Replaced Ignition Coils

P0301- Cylinder Number 1 Misfire Detected

Possible Causes:
- Improper spark plug at cylinder #1
- Insufficient compression at cylinder #1
- Incorrect fuel pressure
- The injector circuit is open or shorted at cylinder #1
- Fuel injector #1 may be faulty
- Intake air leak at cylinder

Possible Solutions:
- Perform Injector Service
- Replaced Spark Plug #1
- Replaced Injector #1
- Replaced Ignition Coil #1

Most likely your issue is with cylinder number 1. Follow the info I have provided and you should be able to solve this issue.

Jan 14, 2011 | 2002 Toyota Tacoma

1 Answer

Cylinder number one stops firing, and black smoke comes out of the exhaust. I replaced the coil pack and spark plugs. when i unplug battery and reset the faults, it drives fine for a couple days. what...

honestly it sounds like you have a bad computer. there is a constant 12 volts going to each fuel injector and the computer momentarily grounds each fuel injector to activate, the black smoke is from too much gasoline and the missfire is probably from the injector either hanging open or being held open electricaly. next time it starts to missfire on number 1 cylinder try taking a stethiscope or long screw driver and put it on #1 fuel injector with the engine running and see if you hear a clicking sound. If not try unplugging the #1 Fuel injector. this won't fix the missfire but you can see if the black smoke clears up. if the smoke doesn't clear up with the injector unplugged and you are sure its # 1 cylinder thats missing, replace #1 fuel injector.

Jul 10, 2010 | 2002 Jeep Grand Cherokee

2 Answers

90 k1500 tbi no fuel from injectors

from the sounds of it its going to be one of 3 things 1) the injector is bad or 2) there is no power getting to the injector 3) bad relay switch.

1) to find out if the injector is good. pull the injector out and with some wire ground one side and touch the other side to your battery, every time you tap the wire to the bat you should here the injector click..

2) if injector is good get a test light and test to see if power is coming out of the wires that go to injector( on some vehicles you have to have the motor turning over befor power is sent through wire, so have someone turn the key while you check the wires with test light)

Aug 15, 2009 | 1990 Chevrolet C1500

3 Answers

Ford focus tdci wont start fuel gettin to injectors can u help 2005

Check the electric stop on the injector pump is working.

Aug 07, 2009 | 2005 Ford Focus

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