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P1494/P1495 Fix?

Posted by sdsdsd, Jan 17, 2014

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  1. sdsdsd

    sdsdsd Proven Member

    49
    0
    Joined Apr 17, 2003
    Chicago, Illinois
    Hi everyone.

    I understand that there are other threads for the P1494/5 codes, but none really have a solution posted.

    I have a 1998 Eclipse GS and I have the code P1495 that is appearing now. I was having 1494 and 1495, I cleared the codes and now only P1495 is present. It comes up almost immediately once codes are cleared.

    Based on what I have seen it may be the Leak Detection Pump (LDP), but it is not for sure. If it is the LDP, where is the LDP located on this car, on top of the gas tank?

    I've seen the P1494 is because of some line that is clogged and need to drop the gas tank to replace, any other places?

    Any help on fixing these two codes would be helpful.
     
  2. sdsdsd

    sdsdsd Proven Member

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    0
    Joined Apr 17, 2003
    Chicago, Illinois
    Thanks for this! I'll check it out.

    Can someone confirm though if the LDP is near the gas tank on this car? Seems I need to get under the car to soap it up a bit also to see for any bubbles that may be occurring.
     
  3. Soccerguy136

    Soccerguy136 Proven Member

    286
    5
    Joined Mar 26, 2013
    Ballwin, Missouri
  4. sdsdsd

    sdsdsd Proven Member

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    Joined Apr 17, 2003
    Chicago, Illinois
    An update for everyone.

    I finally got a chance to look at the car. I didn't drop the tank b/c everything is pretty rusted below the car and i didn't want to break anything else.

    I did take out the vapor canister purge solinoid and make sure it was ok. Visually inspected it and cleaned it with Throttle body cleaner. P1494 is gone! But the P1495 triggered when starting the car this morning after driving it for a few mins.

    I cleared the codes, drove it around, trying to excercise the drive cycle and got all I/M monitors as READY except for EVAP. I imagine it will come back again.

    I can confirm that the P1495 code is back on the car. I'll have to take it to a mechanic and see what they say about it.


    EDIT:
    Purchased a new LDP pump and installed it. The P1495 is STILL there :(
    Anyone have any tips or things to check for at this point? I'm all out of ideas.


    EDIT 2:
    Since putting the new LDP pump in, the code cannot be erased. Once the car is started, it instantly shows the code.
     
    Last edited: May 9, 2014
  5. sdsdsd

    sdsdsd Proven Member

    49
    0
    Joined Apr 17, 2003
    Chicago, Illinois
    Still struggling with this code...

    I've gathered some information, on the behavior of the car. Can someone validate the information provided?

    I traced the sensor wire from the LDP and found it under the back seat near where the gas pump is.

    I checked on each of the pins the voltage and resistance when the car was off and then on again. The information gathered is below

    Resistance on the connector side to the engine:
    PIN 1 and PIN 2 = infinity
    PIN 1 and PIN 3 = infinity
    PIN 2 and PIN 3 = infinity

    Resistance on the connector side to the LDP
    PIN 1 and PIN 2 = 16 ohms
    PIN 1 and PIN 3 = 16 ohms
    PIN 2 and PIN 3 = 0 ohms

    Car engine off - Voltage on the connector side to the engine
    PIN 1 and PIN 2 = 2 V
    PIN 1 and PIN 3 = 4 V
    PIN 2 and PIN 3 = .7 V

    Car engine on - Voltage on the connector side to the engine
    PIN 1 and PIN 2 = 2.5 V
    PIN 1 and PIN 3 = 4.5 V
    PIN 2 and PIN 3 = .8 V

    What values are others getting on these pins?

    Photos of the connectors:
    View attachment photo%201.JPG
    View attachment photo%202.JPG
    View attachment photo%203.JPG

    Any help?


    EDIT
    It has been a couple weeks :(. Does anyone have any information on what the values should be on these connections for resistance and volts or know where i can look it up?
    Thanks!
     
    Last edited: Jun 2, 2014
  6. sdsdsd

    sdsdsd Proven Member

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    0
    Joined Apr 17, 2003
    Chicago, Illinois
    I've read in other threads that the gas tank has a vent valve that is located the top of the gas tank.

    Does anyone know the model number for this part? 98 Eclipse GS.
     
  7. VelocitàPaola

    VelocitàPaola DSM N/T Moderator

    4,885
    99
    Joined Jun 14, 2005
    Ft. Lauderdale, Florida
    It should be MB595490.
     

    1K  21

    1995 Mitsubishi Eclipse N/T
    manual · 2G DSM
    Loading...
  8. sdsdsd

    sdsdsd Proven Member

    49
    0
    Joined Apr 17, 2003
    Chicago, Illinois
    Thank you VelocitaPaola!

    I will look it up and see if I can find a picture. In another thread it was described being a part that had three hoses going to it that can dry up over time and cause a leak. I'll see what i find! Again thanks!

    next step is to get the tank down and see what is going on on the top side.
     

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