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2ws - 40 pin

Discussion in 'Trucks [ Eighteen Wheelers ]' started by StarcarPA, Jun 22, 2014.

  1. Jun 22, 2014 #1
    StarcarPA

    StarcarPA Bobtail Member

    32
    2
    Mar 9, 2014
    0
    I have a 2ws that was converted to a 40 pin many years ago in a 97 chassis. The truck feels under powered for a 475. On a hard pull it almost feels as if I am lifting off of the accelerator (based on exhaust tone). I would have a better idea if the truck had a boost guage. Any ideas where to start. I forgot to mention the truck has a new turbo - still had low power previous to the turbo
     
    StarcarPA, Jun 22, 2014
    StarcarPA, Jun 22, 2014
    #1
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  3. Jun 22, 2014 #2
    maggard359

    maggard359 Medium Load Member

    476
    413
    Nov 20, 2013
    Florida
    0
    Was it a 475 before the ecm swap? Is the current ecm a 475? 2ws are basically an earlier 6nz pretty good motors for pulling. Your 2ws would be reading a different timing location than the 5ek or whatever 40 pin it was converted to unless it's just unhooked and reading off just crank. Any check engine lights?
     
    maggard359, Jun 22, 2014
    maggard359, Jun 22, 2014
    #2
  4. Jun 23, 2014 #3
    StarcarPA

    StarcarPA Bobtail Member

    32
    2
    Mar 9, 2014
    0
    Yes previous 475 - 475 ECM . The timing sensor was relocated correctly. It feels like it has low fuel psi . In my 6nz I will lose rpm on a pull but I hear the turbo spooling. On this truck I lose rpm but it sounds as if it is losing boost
     
    StarcarPA, Jun 23, 2014
    StarcarPA, Jun 23, 2014
    #3
  5. Jun 23, 2014 #4
    maggard359

    maggard359 Medium Load Member

    476
    413
    Nov 20, 2013
    Florida
    0
    If you don't have cat et handy, I would try to borrow a boost sensor from somebody and try it. Also just to rule out fuel, need to put a gauge on it and test drive not just at idle and high rpm. Cat has a shim kit for the transfer pump. I wouldn't rule out scored or clogged injector(s).
     
    maggard359, Jun 23, 2014
    maggard359, Jun 23, 2014
    #4
  7. Jun 23, 2014 #5
    StarcarPA

    StarcarPA Bobtail Member

    32
    2
    Mar 9, 2014
    0
    But it runs smooth does not miss.
     
    StarcarPA, Jun 23, 2014
    StarcarPA, Jun 23, 2014
    #5
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