1. Join the Community!

    DSMtuners is a massive archive of DSM information - but more importantly, it's a COMMUNITY! Join in and participate with other DSMers, and invite all of your DSM friends to make this place their home. Chat with others, create a build thread, post questions and answers. Get involved! Logging in will also remove many of the advertisements, along with this notice. ;)

[RESOLVED] Injectors not pulsing

Posted by SHEARER_TSI, Sep 11, 2009

Please Support VR Speed Factory
Please Support Feal Suspension
  1. SHEARER_TSI

    SHEARER_TSI Proven Member

    346
    0
    Joined Nov 23, 2008
    Oil City, Pennsylvania
    A friend of mine has been putting a new motor in his car, as the other motor was bad. Today we finally finished up and went to start it up. It wouldnt start, so we started looking for issues.

    We took 4 bottles and set them in front of the injectors and tried to turn it over. There is no fuel coming from any of the injectors. Fuel is however making it to the rail with no issue.

    Sound Simple? Wait, theres more..

    This car has a modified automatic transmission harness in it instead of a manual transmission harness because they really arent that easy to come by..

    With the old motor in the car, it would start and run and everything worked, but after we did the swap, its not working. So i dont think that there is a fault in the harness modification. It looks like we have everything hooked up, but perhaps we're missing something.

    Can someone possibly give any suggestion to make this damn thing run?
     

    325  0

    1990 Eagle Talon TSi AWD
    · 1G DSM
    Loading...
  2. n8dsmdriven

    n8dsmdriven Proven Member

    95
    3
    Joined Aug 23, 2009
    Mesa, Arizona
    i have a clue...... well what year is the harness?? and i assume ## still running the stock ecu?

    because , if you are check your Translator plug by your intake cam and make sure its pluged in, also check the pins inside the female part and make sure they look "closed" enough to make proper contact to the actual translator package itself... i had this prob hount me for a week, it was just the fact that the plug had been messed with so much the pins were too loose,k

    ALSO if they are close together then look into finding a spare translator unit.

    plus double check ## wireing, u said you hacked it a little bit?
    did you use but connectors or solder or what form of re-attaching the wires?
     

    429  0

    1990 Mitsubishi Eclipse GSX
    manual · 1G DSM
    Loading...
  3. SHEARER_TSI

    SHEARER_TSI Proven Member

    346
    0
    Joined Nov 23, 2008
    Oil City, Pennsylvania
    What translator are you speaking of exactly? I did not do the hacking I just have to clean up the mess :( Not sure what year the harness it for...if I had to guess I would say 93 (7 BOLT) we put a motor out of a 91 (6 BOLT) in it...could that somehow be the problem?
     

    325  0

    1990 Eagle Talon TSi AWD
    · 1G DSM
    Loading...
  4. n8dsmdriven

    n8dsmdriven Proven Member

    95
    3
    Joined Aug 23, 2009
    Mesa, Arizona
    well .... it "should" on the drivers side bolted to the head right below the STOCK fuel press. reg. its black on a brass lookin bracket and it should have 5 pins for the 91.5 and older or 7 pins in it.. for the 91.5 and newer to my under standing... the wire harness changed from the 90.91 when they did the 91.5 92 stuff its kinda a bi*** to work around but ull understand what i mean once you see it
     

    429  0

    1990 Mitsubishi Eclipse GSX
    manual · 1G DSM
    Loading...
  5. n8dsmdriven

    n8dsmdriven Proven Member

    95
    3
    Joined Aug 23, 2009
    Mesa, Arizona

    429  0

    1990 Mitsubishi Eclipse GSX
    manual · 1G DSM
    Loading...
  6. mkgearhead

    mkgearhead Proven Member

    56
    2
    Joined Feb 19, 2005
    Fort Morgan, Colorado
    I think he meant transistor, not translator. The power transistor on the back of the engine on the driver's side just below the coil pack. Make sure it's plugged in. anything having to do with the auto trans harness shouldn't affect the running of the engine. Does your check engine light come on for about 5 seconds then shut off when you turn the key to the "run " position? If so, your ECU should be working. I would look at the CAS, that's what triggers the injectors.
     

    255  0

    1992 Mitsubishi Eclipse GSX
    manual · 1G DSM
    Loading...
  7. SHEARER_TSI

    SHEARER_TSI Proven Member

    346
    0
    Joined Nov 23, 2008
    Oil City, Pennsylvania
    ok got ya, I will check it out tonight. Is there a way to test the CAS? Also the TPS sensor was swapped out should it be adjusted or checked and if so howdo we do it.
     

    325  0

    1990 Eagle Talon TSi AWD
    · 1G DSM
    Loading...
  8. n8dsmdriven

    n8dsmdriven Proven Member

    95
    3
    Joined Aug 23, 2009
    Mesa, Arizona
    plus did you make sure the cas is working properly?
     

    429  0

    1990 Mitsubishi Eclipse GSX
    manual · 1G DSM
    Loading...
  9. mkgearhead

    mkgearhead Proven Member

    56
    2
    Joined Feb 19, 2005
    Fort Morgan, Colorado
    I'd get it running first. The TPS won't keep the injectors from firing. No sense getting ahead of yourself.
     

    255  0

    1992 Mitsubishi Eclipse GSX
    manual · 1G DSM
    Loading...
  10. n8dsmdriven

    n8dsmdriven Proven Member

    95
    3
    Joined Aug 23, 2009
    Mesa, Arizona
    beat me to it haha:thumb:

    well u could test the cas... read this http://www.dsmtuners.com/forums/newbie-forum/271979-cas-testing.html
     

    429  0

    1990 Mitsubishi Eclipse GSX
    manual · 1G DSM
    Loading...
  11. n8dsmdriven

    n8dsmdriven Proven Member

    95
    3
    Joined Aug 23, 2009
    Mesa, Arizona
    PLUS not to be rude in anyway but just wondering..... how can you run a car and have aem tuneing and a built motor and not know about these things????

    just seams odd to me
     

    429  0

    1990 Mitsubishi Eclipse GSX
    manual · 1G DSM
    Loading...
  12. SHEARER_TSI

    SHEARER_TSI Proven Member

    346
    0
    Joined Nov 23, 2008
    Oil City, Pennsylvania
    So all you do is take it off the head and spin it by hand whith the key in the on position?
     

    325  0

    1990 Eagle Talon TSi AWD
    · 1G DSM
    Loading...
  13. SHEARER_TSI

    SHEARER_TSI Proven Member

    346
    0
    Joined Nov 23, 2008
    Oil City, Pennsylvania
    Well it's been about 2 yers since I have had to mess with any of this stuff and I just want to make sure I am doing it correctly. I tried a lot of this stuff last night but I just wanted to reassure myself that I was doing it correctly.
     

    325  0

    1990 Eagle Talon TSi AWD
    · 1G DSM
    Loading...
  14. n8dsmdriven

    n8dsmdriven Proven Member

    95
    3
    Joined Aug 23, 2009
    Mesa, Arizona
    so you havent TUNED ## car in two years:confused: or you havnt been in the dsm game for 2 years... anyway im not trying to ### a fuss just thought id bring it up...:beatentodeath:
     

    429  0

    1990 Mitsubishi Eclipse GSX
    manual · 1G DSM
    Loading...
  15. SHEARER_TSI

    SHEARER_TSI Proven Member

    346
    0
    Joined Nov 23, 2008
    Oil City, Pennsylvania
    um my car is not running it is still getting fab work done at Ron Shearers...so I have not done any dsm repairs in 2 years....I drive an evo all I have to do is put gas in it and change the oil...plus having the wrong engine harness in the car does not help with about 8 misc connectors that may or may not be used does not help. The guy who put it in had to jump pins to the ecu etc to get it to work, something I would have never done.
     

    325  0

    1990 Eagle Talon TSi AWD
    · 1G DSM
    Loading...
  16. n8dsmdriven

    n8dsmdriven Proven Member

    95
    3
    Joined Aug 23, 2009
    Mesa, Arizona
    oh wow so the motor and wire harness and ecu are all different years... well sound like you need to look into the swap ecu/ wire harness forms, and some pictures would be helpfull about these misc. connectors...
     

    429  0

    1990 Mitsubishi Eclipse GSX
    manual · 1G DSM
    Loading...
  17. steve

    steve DSM Wiseman

    12,768
    549
    Joined Feb 3, 2002
    St. Charles, Illinois
    Make sure you haven't swapped the injector resistor connector with one of the others of the same type. I forget which but I think on a 90 the ISC and injector resistor plugs are in the same general area and will swap.

    Do you have spark?
     

    3K  0

    1991 Mitsubishi Eclipse GSX
    manual · 1G DSM
    Loading...
  18. SHEARER_TSI

    SHEARER_TSI Proven Member

    346
    0
    Joined Nov 23, 2008
    Oil City, Pennsylvania
    Got it figured out, there was an open circuit in the injector harness.
     

    325  0

    1990 Eagle Talon TSi AWD
    · 1G DSM
    Loading...
  19. n8dsmdriven

    n8dsmdriven Proven Member

    95
    3
    Joined Aug 23, 2009
    Mesa, Arizona
    really.... what kind of open circuit....? what was not hooked up?:hmm:
     

    429  0

    1990 Mitsubishi Eclipse GSX
    manual · 1G DSM
    Loading...
  20. SHEARER_TSI

    SHEARER_TSI Proven Member

    346
    0
    Joined Nov 23, 2008
    Oil City, Pennsylvania
    A broken wire.
     

    325  0

    1990 Eagle Talon TSi AWD
    · 1G DSM
    Loading...
  21. n8dsmdriven

    n8dsmdriven Proven Member

    95
    3
    Joined Aug 23, 2009
    Mesa, Arizona
    i really wish SHEARER_TSI would be more pacific on this form.... i mean its just not for you and when other ppl try and DO THERE OWN research they like to find answers not oh well it was just a broken wire:banghead: .... so next time be more pacific.... thanks.
     

    429  0

    1990 Mitsubishi Eclipse GSX
    manual · 1G DSM
    Loading...
  22. SHEARER_TSI

    SHEARER_TSI Proven Member

    346
    0
    Joined Nov 23, 2008
    Oil City, Pennsylvania
    Well I am not sure what to say, there was a broken wire located about 10 inches from the transistor. Not sure on the color that was at 1 AM, I will check today and give you the wire color. Oh and you wish I was more specific not pacific unless you wish I was from the left coast.
     

    325  0

    1990 Eagle Talon TSi AWD
    · 1G DSM
    Loading...

Share This Page

Support Vendors who Support the DSM Community
Archer Fabrication ECM Tuning ExtremePSI Feal Suspension Fuel Injector Clinic Jacks Transmissions JNZ Tuning Kiggly Racing Morrison Fabrications OHM Racing RixRacing RockAuto SouthBay Fuel Injectors STM Tuned Track Decals Track Sculptures VR Speed Factory WheelWell.com