Question about Mitsubishi Minivan

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I'm having mitsubishi Dion 2.0 autoamtic it was having a problem with computerbox and i replaced with another one the car is starting but there no power or no accelerator its only vibrating pl update what to do ???

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  • shahid_hasib Jul 22, 2009

    i'm having mitsubishi Dion 2.0 autoamtic it was having a problem with computerbox and i replaced with another one the car is starting but there no power or no accelerator its only vibrating pl update what to do ???

  • shahid_hasib Jul 22, 2009

    it was having a problem with computer box we never change a gearbox for this car. we only changed computerbox

  • shahid_hasib Jul 22, 2009

    it is the same number....

  • shahid_hasib Jul 22, 2009

    computer needs to be reprogramme pl let me know

  • shahid_hasib Jul 23, 2009

    old computer box was not resonding thats why we changed with another similar one

  • shahid_hasib Jul 23, 2009

    its starting but vibrating

  • shahid_hasib Jul 29, 2009

    IT SHOWING ERROR P0190 AND P1221 FUEL RAIL PRESSURE SENSOR CIRCUIT
    AND P1221 FUEL PUMP SECONDARY LOW


  • shahid_hasib Jul 29, 2009

    ITS SHOWING 2 CODES 1. CODE: P0190 FUEL RAIL PRESSURE SENSOR CIRCUIT AND 2. CODE: 1221 FUEL PUMP SECONDARY CIRCUIT LOW

  • shahid_hasib Jul 29, 2009

    IT SHOWING TWO ERROR CODES 1. P0190 FUEL RAIL PRESSURE SENSOR CIRCUIT AND 2. CODE P1221 FUEL PUMP SECONDARY CIRCUIT LOW

  • shahid_hasib Jul 29, 2009

    IT S 2001 MODEL MITSUBISHI DION 2.0 LTR GDI AUTOMATIC

  • shahid_hasib Jul 29, 2009

    SO I HAVE TO CHANGE fuel pressure regulator.

  • shahid_hasib Jul 29, 2009

    SHOWING ERROR P0190 AND P1221 FUEL RAIL PRESSURE SENSOR CIRCUIT
    AND P1221 FUEL PUMP SECONDARY LOW ITS ANYTHING TO DO WITH FUEL PRESSURE REGULATOR

  • shahid_hasib Aug 13, 2009

    P0190

  • shahid_hasib Aug 13, 2009

    P0190

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  • Master
  • 11,896 Answers

Change the throttle position sensor.
Also good idea to have any codes on the computer read for any errors. Also good idea to change fuel filter.
You can check spark in each plug by removing the plug, place the spark plug back on the wire and lay it on top of the motor. Have someone else turn the car over, and then you can visually watch to see if a cylinder is firing or not. If not, a coil pack may need replacement

Posted on Jul 29, 2009

  • 1 more comment 
  • Nate Stansfield
    Nate Stansfield Jul 29, 2009

    You will need to replace the fuel pressure regulator.

  • Nate Stansfield
    Nate Stansfield Jul 29, 2009

    What year is this?



  • Nate Stansfield
    Nate Stansfield Aug 13, 2009

    Sounds like the fuel pressure regulator needs to tested at least.
    The quickest way i have found to check it is to hook up a pressure
    gauge to the fuel rail and start the engine. During idle let pressure
    stabilize. Then breifly crimp or clamp off with pliers, the return fuel
    hose after the regulator. This is to confirm that the pump has excess
    pressure. Remember this is very briefly. If the pressure goes up then
    you are reading regulator pressure. If it doesn't go up then the pump
    pressure is less than the regulator pressure and may need to be
    replaced. Remember don't crimp the return line for more than a second
    or you run the risk of popping the rubber hose on the pump in the tank.
    It only takes a second to see if the pressure gauge jumps up.



    Have you checked the timing?


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  • Master
  • 8,619 Answers

Hi

There are certain things to check before you can be sure what thing is causing this issue. Please get your fuel injectors checked, try using fuel injection cleaners. Also check the battery terminals and connections to the battery. Get your car checked for carbon buildup on valves. There is a fuel pump relay which is under right center of dash. It is a metal relay usually bolted to the floor near the ecm, check it and replace if faulty.

Please do accept the solution if the issue is resolved or else revert for further assistance.

Thanks
Rylee

Posted on Jul 29, 2009

  • Rylee Smith
    Rylee Smith Jul 29, 2009

    Hi



    As you already know that Trouble codes P0190 and P1221 means Fuel Rail Pressure Sensor Circuit Malfunction & Fuel Pump Secondary Circuit Low. You'll need to get the fuel pump and fuel filter checked. Chances are that the fuel pump is bad and needs a replacement.



    Please do accept the solution if the issue is resolved or else revert for further assistance.

    Thanks
    Rylee

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