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2000 250 ox66 ruff idle loading up? firing on all 6 at all rpms with no blink codes

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  • #1

    2000 250 ox66 ruff idle loading up? firing on all 6 at all rpms with no blink codes

    Im back just started getting motor #2 this one is firing on all cylinder at all rpms the book says to check for sensor codes so i hooked up my brand new winky blinky (very hard to find these now)
    A CODE 33 comes on at start (WAITING TO WARM UP) comes on for short period
    THEN FLASHES CODE 1(NORMAL) what else can cause #5 to fire all the time?
    any help would be greatly appreciated

    tell you what I've done
    new plugs
    new vst pump
    cleaned injectors
    ran fuel rail test 35lbs constant
    changed stator
    changed thermo sensor
    changed pulse coil
    ran winky blinky
    all parts where swaped with my good running engine

    pleeease help i want to go fishing these motors are for my personal boat
    Last edited by bigdadadya1a; 01-17-2015, 11:48 AM. Reason: added info
    Tags: None
  • #2
    if they are VX motors they spark all 6 all the time.
    the sx and lx spark 4 cylinders between about 800-2000 RPM and will spark all 6 when cranking,cold or RPM below about 600.

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    • #3
      Now do you see why it is a good idea to post the complete model #
      every time you start a thread on your motor or motors?

      Seems that was a 1998 in your last thread
      Last edited by 99yam40; 01-18-2015, 10:20 AM.

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      • #4
        its not a Vmax and i understand the progressive ignition my model # is LX250TURY my problem is this motor is firing on all 6 at any rpm as i said the winky blinky flashes 33 till warm then flashes 1 what can cause this motor to do that? driving me crazies even swap ecms today no lucky im i missing a sensor? not on winky blink system? heeelllppp!!!

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        • #5
          appearently you DONT understand how nor why the CCS system works.
          what is the engine idle speed?
          does the ECM tachometer output display the RPM on the digital meter?
          below about 600 RPM all 6 fire.
          between about 650-2000 RPM #5 does not fire.
          from about 850-2000 RPM #2 also does not fire.
          a sensor failure,failure to warm up, knock detect or warning system activation cancels CCS.

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          • #6
            yes sir i under stand how the system works my motor is firing on all cylinders at all rpms @600-1000-1500-2000 it never kicks out the winky blinky says all sensor are good flashing 1 right? i learned all about the ignition system dropping and bring in cylinder at different rpms on this motors sister motor it runs great now unlike this one

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            • #7
              so now you have to check why.
              remember the winky blinky wont display stored codes and the OX66 ecu CANNOT store codes.
              only ACTIVE codes and ONLY when the code is active.
              have you tested the alarm system?
              what is the TPS voltage at idle?
              what is the ign timing at idle?
              all will point in the right direction.

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              • #8
                thank you rodbolt for trying to help its greatly appreciated we tested and set the tps with a meter when i first hooked up the winky it gave me an 18 tps out of range hooked up a meter set it and it never flashed the 18 again is thier a sensor not in the winky loop? when i run it it fires on all clinders at all rpm ranges my other motor fire on all 6 when the winky is flashing 33 and stops when it goes to flashing 1 comes back in around 1800-2000 rpms that's the way its suppose to right? this motor does not do this fires on all 6 idles high and misses
                /good compression /35lbs on the fuel rail/tested alarms/i will check to timing again but i think its locked at 7

                Comment

                • #9
                  rough idle can be caused by incorrect TPS voltage,incorrect O2 sensor feedback voltage, bad lift pumps(common) or a partial CTS signal.
                  sensors can have whats known as an IN range failure.
                  the sensor feedback will be inside the ECU map yet the engine wont run correctly.
                  several things can cause ign base timing to lock at 7* BTDC.

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                  • #10
                    was just checking over the engine parts diagram and notice that they have a thermo sensor list one top of the head and one below the electrical box what does the one under the box do? what is it sensing?it not mount on the block?

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                    • #11
                      If it is not mounted to the block then it will not measure the block temp.
                      Is it mounted into something or just out in the air flow?

                      Maybe measuring air temp as it goes into the motor

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                      • #12
                        rodbolt your a god!! after count less test it turn out to be the injectors sticking just paid deisil inject $90 to clean and check them you told me to search and we did now im pretty faimlur with the winky binky system we change the ejector rail with my good motor and runs perfect now #5 goes out and comes in at 1800 but if it was not for rodbolts counts post on this motors and being able to reference them is great
                        rodbolt if you ever come to south fl look me up im buying lunch
                        a1amarinetech.com
                        going to take motor test boat tonite and mount it with is sister tomorrowif it dont rain let you guys know how they run together

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                        • #13
                          there is ONE coolent temp SENSOR ,its typically mounted about halfeway down the stbd head.
                          there are TWO temp SWITCHES mounted on the block beside the T stat housings.

                          always pay attention to the difference between a SENSOR and a SWITCH.

                          the MAP sensor and the intake air sensor typically mount on the electrical panal.

                          with an injector or two down the engine CANNOT idle correctly so it cancels CCS and attempts to make the motor do something.
                          but it doesn't realize an injector is stuck or a filter clogged.
                          stupid ECU.

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