Results 1 to 15 of 21

Thread: scratching my head on this one.. 1991 kodiak no start

Hybrid View

Previous Post Previous Post   Next Post Next Post
  1. #1
    Administrator
    Join Date
    May 2011
    Location
    Lakes Region, NH
    Age
    54
    Posts
    3,873
    Basic information to help with diagnosis:

    The ignition module will fire the coil without a working ECM. Checking for spark while cranking only tells you the coil and pickup coil is working and that the ignition module is partly working.
    The ignition module will send a pulse to the ECM for each spark made at the coil.
    The ECM will use pulses from the coil to fire fuel injectors.
    If you install a noid light at the injector and spark tester on the coil wire you should see noid light blink when spark tester sparks. The "netres" or backup fuel hardware will make this happen even if the calibration in the eprom is bad.

  2. #2
    Electronic Ignition!
    Join Date
    Feb 2024
    Age
    31
    Posts
    11
    Sorry for the delayed response guys... been very busy with work.

    so after cleaning the fuel system and having the tank re-lined i now have fuel to the injectors, and i also have spark as well.
    The engine will try to start, but instantly stalls. It will try to stay running if i pump the throttle, but it acts like (in my personal opinion) it is not getting enough fuel.
    I jumped the starter solenoid to watch the injectors and they have a constant spray.

    I have replaced the IAC valve, Coolant temp sensor, TPS, and MAP sensor before the truck started giving me issues. So i have not reason to believe that any of that is the cause.

    No codes are being thrown, and i cannot get any useful data from the live reading from my laptop.

Similar Threads

  1. Replies: 2
    Last Post: 01-03-2018, 12:42 PM
  2. No start ~ start and stall issue
    By PDD33734 in forum TunerPro Tuning Talk
    Replies: 3
    Last Post: 11-21-2017, 08:52 AM
  3. Corvette 1991 bin mod
    By discovery1920 in forum GM EFI Systems
    Replies: 1
    Last Post: 05-04-2016, 02:46 AM
  4. Corvette c4 1991 looking a bin
    By discovery1920 in forum GM EFI Systems
    Replies: 2
    Last Post: 07-29-2015, 04:38 AM
  5. Replies: 6
    Last Post: 10-11-2013, 12:36 AM

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •