intermittent loss of cmp or ckp

Posted by safirenside, Apr 16, 2011

Please Support Jackson Auto Machine
  1. safirenside

    safirenside Proven Member

    98
    0
    Joined Jan 28, 2011
    houston, Texas
    alright so i have a couple codes that poped up
    P1391 intermittent loss of cmp or ckp
    P1390 timing has skiped one tooth or more

    i was wondering what the signal voltage is suppose to be for the cam sensor and the crank sensor

    i was reading around 13 volts for the cam sensor and 1.4 volts on the crank

    also forgot to mention my timing is dead on
     

    Log in/Register to remove ads
    My DSM:
    Loading...
  2. Bomalleygst

    Bomalleygst Proven Member

    30
    1
    Joined Mar 27, 2011
    Gettysburg, Pennsylvania
    Im actually havin the same exact problem with mine. Except mine runs roughs when i rev it and after i drive for a minute it will shutt off and not start up for a couple mins. If i find anything out ill let ya know
     
  3. stayflalfy

    stayflalfy Proven Member

    34
    0
    Joined Aug 4, 2010
    Mounds View, Minnesota
    I was getting codes like these as well on my 420a and i replaced all the sensors that it said were messed up. Turns out it was just my IAC. I dont know why the computer threw a code for cmp and ckp. I cant remember what the voltage is supposed to be for those two but i will check in my chilton when i get home
     
  4. safirenside

    safirenside Proven Member

    98
    0
    Joined Jan 28, 2011
    houston, Texas
    alright thanks man ill change the IAC and see if it fixes it
     
    My DSM:
    Loading...

Share This Page

Loading...


Log in/Register to remove ads

Support Vendors who Support the DSM Community
Ace Race Parts Advanced Fuel Injection Archer Fabrication Boostin Performance ECM Tuning Extreme Turbo Systems ExtremePSI Feal Suspension Fuel Injector Clinic Jacks Transmissions Jackson Auto Machine JNZ Tuning Magnus Motorsports Miller Import Parts Morrison Fabrication & Design OHM Racing Race Components Inc RockAuto RoadSurge Spultronix Performance STM Tuned Strictly Import Motorsports VR Speed Factory