dodge 1998 5.2 igition timing of 30 degrees

Discussion in 'Mechanic and Repair' started by JCLawn and more, Jul 14, 2013.

  1. herler

    herler LawnSite Fanatic
    Posts: 5,145

    Errr no you probably crossed wires and plugs on the distributor cap when you replaced them, that is why you are supposed to replace spark plugs and wires ONE at a time so you don't cross them up. Yes, even replacing the cap itself you need to do the wires ONE at a time, using the old for reference as you wire up the new one, because failure to do so will cause... A misfire!!!

    So here comes the fun part, you get to visually inspect each and every wire coming from your engine and going to the cap to make sure it's plugged in correctly.

    The process is a bit time consuming but not as daunting as it might seem.

    Firing Order on Dodge is Clockwise 1-8-4-3-6-5-7-2
    And your cylinders from front to back
    Pass: (front) 2-4-6-8 (back)
    Drivr: (front) 1-3-5-7 (back)

    So for example, find your number 1 wire and follow it back to the distributor cap.
    Now, the NEXT wire in clockwise order SHOULD be the number 8, follow it back to the engine and hope it does actually go to the number 8 cylinder... Don't go pulling off too many wires, once again remember to do this ONE wire at a time.

    And technically that's all you should need to troubleshoot this dilemma.
     
  2. JCLawn and more

    JCLawn and more LawnSite Fanatic
    from MI
    Posts: 5,204

    Wrong. The firing order has been checked multipal times. We even tried rotating the firing order one way either way, one plug, to see if it would compensate. I actually had this issue of advanced timing before I changed wires, I just thought it was a pinion bearing because it felt like everthing was off balance instead of hard core predetination. If I had a way to check base timing it would be at or near 0. When I start up the engine with a timing light it will be dead on, then according to the obd sensor it will bounce between 18 and 30 degrees advanced timing so we loose it with the timing light (the computer is doing the advancing). Also the compuer explains my speed sensor randomly working when I put a new one in and it does the same thing.
     
  3. Patriot Services

    Patriot Services LawnSite Fanatic
    Posts: 12,449

    I knew you had already ruled out crossed wires. That doesn't cause random misfiring anyways. You have an intermittent misfire issue.
     
  4. JCLawn and more

    JCLawn and more LawnSite Fanatic
    from MI
    Posts: 5,204

    It will prededinate at 1400 rpms under load in overdrive (sometimes and that's what literally shakes the truck) and it will throw the misfire signal at 2100-2500 rpms (at 1/2 or more throttle)
     
  5. JCLawn and more

    JCLawn and more LawnSite Fanatic
    from MI
    Posts: 5,204

    Sooooo new issue with the dodge. The head lights will flash on a regular interval sometimes when I have them on. I know my switch is toast so I've penny stacked the dimmer switch so its on full brights since last fall lol anyways now my switch sometimes works but the headlights will flash on and off at an interval of like my blinkers. It loves to do this on coming cars or when I am behind someone........... Any ideas? I read something about the ctm or something like that.
     
  6. JCLawn and more

    JCLawn and more LawnSite Fanatic
    from MI
    Posts: 5,204

    bump for the last question?
     
  7. Patriot Services

    Patriot Services LawnSite Fanatic
    Posts: 12,449

    Sounds like a short in the switch overloading a relay or breaker.
     
  8. JCLawn and more

    JCLawn and more LawnSite Fanatic
    from MI
    Posts: 5,204

    Where is the relay on this thing? I can't find it.
     
  9. Patriot Services

    Patriot Services LawnSite Fanatic
    Posts: 12,449

    Power and fuse block under the hood.
     
  10. JCLawn and more

    JCLawn and more LawnSite Fanatic
    from MI
    Posts: 5,204

    I see nothing that says headlamp relay
     

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