Question about 2001 Dodge Intrepid

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2001 dodge intrepid no spark and no injector pulse 2.7 engine

No injector pulse and no spark.engine just turns over b1390 device voltage, b1009,b28905 and a p1531. these are all the codes i have pulled up

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  • William Rendon
    William Rendon May 10, 2016

    OK I have spark pulse on 1 and 3 coil packs but nothing on other 4 cylinders?

  • Jeff Armer May 11, 2016 Watch this video >



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  • Dodge Master
  • 15,575 Answers

Check the ASD relay , auto shut down relay in the under hood fuse / relay box . The ASD relay supplies B+ voltage to the injectors an ignition coils plus other thing's ! This may be you device voltage code problem as well as the other codes

Posted on May 01, 2016

  • 3 more comments 
  • William Rendon
    William Rendon May 09, 2016

    Checked all fuses OK. Installed new crank senor. Still no spark. .or injector pulse. Really stumped. .tracked all wiring checking for breaks. .nothing.

  • William Rendon
    William Rendon May 09, 2016

    Also have power to one side on each coil pack

  • Jeff Armer May 09, 2016

    If you have power on one side of the coil ,then your missing the control side . The PCM - engine computer controls the coils by supplying a ground . Probably the same for injectors .If you do have B+ voltage on the dark green with a lite green stripe that's good , so is the ASD relay . But bad news the PCM is not grounding or controlling the coils or injectors . Could be a bad PCM or no power or grounds for the PCM .Go here to look at a wiring diagram free wiring diagrams . Also go on youtube an check out videos on trouble shooting ignition systems .

  • William Rendon
    William Rendon May 11, 2016

    Well figured out my problem. The garage that installed the engine put a 2008 2.7 magmiun engine in a 2001 dodge intrepid and used the intrepid fly wheel.which had different timing marks. Their for the cam sensor and crank senor are not timed

  • Jeff Armer May 11, 2016

    There are a couple of videos on youtube ,about Chrysler , dodge ,jeep engine swaps cam sensor trigger wheel problems . different then the original .



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Injectors not firing on GM 3.8 engine on buick lesabre 2004

Are you missing anything else? Engine cranking, do you have spark at the plugs? Also, use a gage and check proper fuel pressure, engine cranking. Any applicable trouble codes? If your missing spark--fuel pressure and fuel injector pulse, I'd have to check for rpm signal, usually, comes from crank sensor.
Key on, did you check for voltage on pink wire at fuel injector, use a test light to check for voltage. The computer grounds the fuel injector if rpm signal is present.
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I have to ask. How long since a tune-up? Are there any applicable trouble codes?
With engine cranking, if no spark at the spark plugs and no fuel injector pulse along with no fuel pump action, have to check rpm signal.
If you have spark and fuel injector pulse but, no fuel pump action, then we check the fuel pump circuit. Did you check applicable fuse, not only check the fuse, check the fuse circuit for voltage. At the fuel pump connector, gray wire is voltage for fuel pump motor and black wire is ground.

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Open circuit to PCM - the engine computer grounds the other side of the injector there by turning it on an off very rapidly . This is call PWM - pulse width modulation . There is a transistor in the computer that does this . Or the PCM is bad !

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Has spark no injector pulse has power to the injectors

No pulse means the injector ground side is absent, since you have power to the injectors. The ground wire goes into the engine computer to be internally grounded for the pulse. You can test the injector ground side with a test light, as a verification of it not having pulse. If it really has no pulse, but it has correct voltage to the injector solenoid, then you have a bad injector, or a bad ground wire to the pcm, or a bad pcm.

Use a test light with a ground clip and a needle-type probe. Unplug the injector connector and note which is the power wire terminal and which is the ground wire terminal. Clip the test light lead to the POSITIVE battery post, and put the probe into the injector's ground wire terminal. Now have someone crank the engine over and watch for a blinking light on the tester. If you have a blinking light, the injector ground side is working right, so check if voltage to the injector is correct, or if you have a bad injector. If you have no blinking light, then no pulse is correct. You will need to check the ground wire to the computer before assuming a bad computer. I think they are called quad drivers inside the computer that control the injector grounds.

Best way to check that ground wire is, first, take off the negative battery cable, then pull off the computer connectors, then use an ohmmeter to check resistance of wire from injector terminal to the pin on the computer's connector. Low resistance, low ohms, means the wire is good. ...But first I guess you will have to find the pin-out diagram for the computer, where and on which connector that ground wire goes in at. There's around a hundred or more wires going in, so color coding, tracing by the color of the wire would be a royal pain. Good luck, Scott.

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No injector pulse

1991 this make you OBD1 . You can access a code by jumping 2 terminals together.The injector pulse is from the PCM . If you have no pulse you need to troubleshoot for spark first . If you dont have spark do spark first then injector pulse comes on. If no injector pulse check fuse in engine junction box.Use a volt meter check grounds at PCM. If all else checks out good replace PCM. You may also want to check the TPS. If this sensor short out in the WOT position you also wont get injector pulse.SO disconnect the TPS. and recheck for injector pulse

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Spark indicates crank sensor, ignition coils and modules-ok
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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.

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1985 corvette no pulse to injectors

Very important that if you are not savvy of working on your Vette would be better off - taking your car to a dealership for repairs on your trouble codes. However if you feel that you want to, First locate your car's alcl this component is located just below the instrument panel and to the left of the center console. Remove the plastic cover the first two slots to your right are the A & B slots.
The A slot is the diagnostic slot and the B slot is the ground slot. Insert the computer key into these slots if you do not have a computer key, a paper clip or wire jumper clip will do, (with the engine off) this is very only put the ignition key to on ( not start !!!) the check engine light will display a code 12 which is one flash followed by two flashes. This code will be flashed three times ..followed by the trouble code stored in your car's computer.

What ever the code is it will be flashed three times. Have a paper and pencil ready and write down the code.

Code #12: Normal No Codes. 
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Code #14: Coolant Sensor Circuit Low.
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Code #23: Manifold Air Temperature Circuit High.
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Code #32: EGR System Failure. 
Code #33: Mass Air Flow Sensor High.
Code #34: Mass Air Flow Sensor Low. 
Code #36: Mas Air Flow Sensor Burn-Off Function Fault. 
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Code #43: Electronic Spark Control. 
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Code #45: Rich Exhaust Indication. 
Code #46: Vehicle Anti Theft Fault. 
Code #51: Faulty Mem-Cal. 
Code #52: Fuel Calpak Missing.
Code #52(1990-91 Corvette Only): Engine Oil Temperature Sensor Low. 
Code #53: System Over Voltage. 
Code #54: Fuel Pump Circuit Low Voltage. 
Code #55: Defective ECM. 
Code #62: Engine Oil Temperature Sensor Circuit High.

Please remember that if you have the computer key installed in the alcl and you start the engine (you will ruin the engine's computer) only put the ignition to on (not to start).

If you should get a check engine soon display.. you can use the above procedure and codes to buy the right part or at the very least to keep from getting taken for a ride and be made to pay hight prices for some inexpensive module that you could have installed yourself.

If your engine displays a trouble code ... your engine will go into limp mode will still run but very poorly. You might be able to reset the computer if it will not start (just to get home) by disconnecting both battery cables and re-installing them ...this is not recommended ..but if you are stranded it might help unitl you get your car home or to a repair shop..good luck.

Good luck and hope this helps. 

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