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1990 laser rs no fuel through injectors

Posted by Daveweisel, Jul 16, 2019

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  1. Daveweisel

    Daveweisel Probationary Member

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    Joined Jun 30, 2019
    Jermyn, Pennsylvania
    So I have this laser rs, I replaced the mpi relay, the fuel pump, spark plugs. I have fuel and fuel pressure to the fuel rail, but the i injector plugs are not throwing any power, I have tried googling all I can but idk
     
  2. iugrad92turbo

    iugrad92turbo Proven Member

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    Joined May 22, 2007
    Kalamazoo, Michigan
    Check resistor pack for the turbo car.
     

    2K  1

    1992 Eagle Talon TSi AWD
    awd · manual · 1G DSM

    6K  4

    1992 Eagle Talon TSi
    awd · manual · 1G DSM
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  3. 90_Talon_TSi_AWD

    90_Talon_TSi_AWD Probationary Member

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    Joined Jul 12, 2019
    Kokomo, Indiana
    you may be dealing with the same issue i'm dealing with on my '90 Talon...
    my next check is going to be the CAM Angle Sensor...

    i plan on pulling mine apart while still mounted to the engine...
    i have not tried yet and it may be a couple weekends before i get the chance...
    but it is my understanding that the top half of the CAS can be removed and what is inside is pictured below...
    the disc with the slots spins when the CAM spins...
    the actual sensor is the black item shown at "twelve o'clock"...

    if i can remove and inspect by removing the top half, then i won't need to effect timing...

    again, have not tried this yet, but it is how i plan to take my next step with my no-start issue on my '90 Talon...

    IMG_5999.jpg
     
  4. Daveweisel

    Daveweisel Probationary Member

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    Joined Jun 30, 2019
    Jermyn, Pennsylvania
    ill Be ripping at that sensor this weekend as well. If it fixes it I will update you here. I was hoping there was a dumb eso relay or something
     
  5. steve

    steve DSM Wiseman

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    Joined Feb 3, 2002
    St. Charles, Illinois
    Does your ECU power up?
     

    3K  0

    1991 Mitsubishi Eclipse GSX
    manual · 1G DSM
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  6. Daveweisel

    Daveweisel Probationary Member

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    Joined Jun 30, 2019
    Jermyn, Pennsylvania
    How can I be sure? The fuel pump runs and the mpi relay plugged into makes noise, and the car makes spark
     
  7. steve

    steve DSM Wiseman

    12,728
    515
    Joined Feb 3, 2002
    St. Charles, Illinois
    The initial test is:
    Turn the ignition switch on. Does the CEL turn on for about 5 seconds and then turn off?
    Does the factory boost gauge move to 0 and stay there? If you start cranking the engine does the boost gauge drop to vacuum and then return to 0 when you stop.

    If these don't happen the ECU isn't running correctly and is unlikely to start the car.
     
    Last edited: Jul 18, 2019

    3K  0

    1991 Mitsubishi Eclipse GSX
    manual · 1G DSM
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    Daveweisel and 1990TSIAWDTALON like this.
  8. iugrad92turbo

    iugrad92turbo Proven Member

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    366
    Joined May 22, 2007
    Kalamazoo, Michigan
    Do you have a way to log anything , are your injectors turned off on link btw.
     

    2K  1

    1992 Eagle Talon TSi AWD
    awd · manual · 1G DSM

    6K  4

    1992 Eagle Talon TSi
    awd · manual · 1G DSM
    Loading...
  9. 90_Talon_TSi_AWD

    90_Talon_TSi_AWD Probationary Member

    14
    0
    Joined Jul 12, 2019
    Kokomo, Indiana
    injectors turned off ??? how is this checked?
    is this the aftermarket "Ostrich 2.0" and the "Keyspan" device (both have USB ports) that are near the ECU?
     
  10. Daveweisel

    Daveweisel Probationary Member

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    Joined Jun 30, 2019
    Jermyn, Pennsylvania
    I have the non turbo version I will check all of these on Saturday when I wrench on it again thank you all for the posts. I will keep you all updated
     
  11. Daveweisel

    Daveweisel Probationary Member

    7
    0
    Joined Jun 30, 2019
    Jermyn, Pennsylvania
    I am with the car now, it is not displaying a check engine light for 5 seconds..
     

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