Question about 1996 Mitsubishi Eclipse

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Engine problem I was driving my car then came home parked. When i try to leave again it just wont stay on. I started it and then the rmps went to 2500 and then it started to go down to zero then they would jump back up then down and continue for a few secs then the engine would completely dies. Also when i rev the car up it red lines at 4000 rpms in neutral. Then sometimes it would start then the rpm jump around again then level out at 1000 rpms.

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  • Nash
    Nash Sep 17, 2008

    i never knew about this thanks. This is what it did the check engine light stay on for 2secs then paused for 5secs then flashes 2 times pause 2 times pause 4 times pause 1time pause 4 times then 5 times then 5 times.

  • Nash
    Nash Sep 17, 2008

    i did the keydance a couple of times again and it did the same thing. Also does the map sensor have anything to do with the fuel system.Since it idles fine now but when i tap gas it dies. I changed the fuel filter.

  • Nash
    Nash Sep 18, 2008

    One last question where is the map sensor located on a 420a

  • John
    John May 11, 2010

    What motor is in your car?



    This either sounds like a map/maf sensor issue or a tps sensor issue. You should be getting a check engine light so have that read and it will help you figure out your problem. IF it is the tps sensor the car will not run long at all.



    The keydance should work on your car to help you read the code.







    THE KEYDANCE
    To check the PCM codes, insert the key into the ignition and switch the key ON-OFF-ON-OFF-ON within a 5 sec. time period. Then count the Engine light flashes. The number of flashes represents the trouble code. There is a slight pause between the flashes representing the first and second digits of the code. Longer pauses separate indivdual trouble codes. All codes will end with 55 which signifies End of Codes / No detected failure.
    Let me know the codes and i'll help you troubleshoot further.

  • Anonymous Mar 28, 2014

    Engine wont start,starts if it is cranked for a longer time,but can not drive the engine goes off and the RPM meter is at 0 level,

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  • 14 Answers

The codes don't match up to the chart. Do the keydance again and see if there is any difference.

here's the codes http://www.2gnt.com/index.php?d=PCM%20Error%20Codes

24 (Throttle position sensor voltage does not agree with MAP)
14 (MAP sensor voltage too low/too high)
Points to the map sensor.

I've scanned a couple pages in my Haynes manual and uploaded them for you. These pages will help you check out the sensors.

http://s145.photobucket.com/albums/r217/Carnifreekshow/Keydance%20help/

The password is johnw

More than likely it's the map sensor. I remember when i turboed my car i had major problems with the safc and the map sensor. It would act just like yours does. The ecu doesn't use the map sensor in closed loop mode. Open loop starts at 4000rpms and will start reading values from the map. If it is receiving values not in spec then it will limit the rpms and stay locked in closed loop.

Replace the map sensor and let me know how it turns out.

Posted on Sep 17, 2008

  • John
    John Sep 17, 2008

    Yes the map sensor helps control the fuel with the aid of the o2 sensor and the tps. This is for sure your problem. Just replace the map sensor.

  • John
    John Sep 18, 2008

    this is a good representation of the location. No specific wire though.



    http://www.putfile.com/pic/6776044



    You will see an oblong sensor at the very end of the intake manifold, this should be your MAP sensor. If you don't have the same motor (420a) as me let me know.

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