Question about Mitsubishi Lancer

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I need a 02 lancer 2.0 s.o.h.c timing diagram

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  • 6 more comments 
  • sanfords_uga Feb 04, 2010

    yes. Im having a major problem with my car im trying to check simple solutions before going to extensive solutions. My car is random misfiring (changed plugs and wires did not fix). and when it idles it sounds like the timing is just a tad bit off. I took it to a shop they scanned it. they told me it was random misfiring and low effiniency in bank one telling me that that catalytic converter was not functioning properly, but they did a o2 sensor reading and said that both o2 sensors were reading the same. (i have 2 sensors one on the headers and one on the cat) But what the guy at the shop said the sensor on the cat should be reading a little slower than the one on the headers. His conclusion was he wasnt sure what was wrong with the car, but the timing might be a little off. Then he said that could also be a reason why my car is throwing those codes. So thats why i was wanting a diagram on the timing belt to see if the timing might be a tooth or so off.

  • sanfords_uga Feb 04, 2010

    but could either of these two also cause me to get a reading of low efficiency in bank 1 as well

  • sanfords_uga Feb 04, 2010

    also my car smells rich when it idles

  • sanfords_uga Feb 04, 2010

    one other thing i wanted to mention about my car when it idles it idles rough and sometimes it will go about dead when ideling but the rpms will kick up to 2000 the it will idle rought for a couple of seconds then it will go to about doing the samething or it will idle just fine

  • sanfords_uga Feb 04, 2010

    k on the map sensor



    there were 3 wires i tested all of them just in case



    black - 0.03

    green and white - 1.56

    grey wire - 5.42

  • sanfords_uga Feb 05, 2010

    on tps



    green wire with just switch on never got above 1.00

    while reving to 4000 rpms never got above 1.42

    black wire stayed at 0.00

  • sanfords_uga Feb 05, 2010

    also the pcv valve the ball is still moving freely

  • sanfords_uga Feb 10, 2010

    changed out the tps it is working properly. but my car is still doing the samething. i probably should have mentioned i have some mods done to my car. cold air intake with the mass airflow sensor hooked up. performance exaust with all the 02 sensors hooked up. also i have a performance cam gear. performance fuel pressure regulator.

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  • Mitsubishi Master
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Tming Diagram, about timing belt or timing marks?

Posted on Feb 10, 2010

  • ZJ Limited
    ZJ Limited Feb 10, 2010

    Review this diagrams:



    Fig. Camshaft and crankshaft sprocket alignment for proper timing belt replacement-1.8L and 2.0L SOHC engines




    Fig. Silent shaft sprocket alignment marks for belt replacement-1.8L and 2.0L SOHC engines

    I hope help you with this.

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  • Mitsubishi Expert
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Hello! When you say "timing diagram" to you mean timing belt diagram?

Guru..........saailer

Posted on Feb 04, 2010

  • 5 more comments 
  • David Burbee
    David Burbee Feb 04, 2010

    Hello! The Oxygen sensors can be fooled. A misfire introduces oxygen into the exhaust manifold. The O2 falsely interprets a lean condition.

    The timing belt being a "tooth off" is the least likely cause.

    The Manifold Absolute Pressure (MAP) sensor is the "fuel boss" and is the most likely culprit. If defective it will alter engine timing. The cost is around $110. However we can test it to see if it is defective. You'll need a multimeter to perform the following test...

    The MAP is located on the far left side of the fuel rail...It is a rectangle shaped black component with a three wire connector held in place by two bolts...With the connector in-place and the key in the on position, measure between the Light Green/White and Black wires...You should read greater than 1 volt...If reading is below 1 volt the sensor is defective...

    The second sensor to check is the Throttle Position Sensor (TPS)...TPS is held in place by two screws on the side of the throttle body...With connector in place...And the key in the on position...Measure between the Green and the Black wire ...You should read below 1 volt...Start the engine and SLOWLY increase RPM'S...Don't listen to the engine...Watch the meter ...Voltage should rise SMOOTHLY to 4 volts...If the voltage jumps or acts erratic the sensor is defective...

    This sensor is very expensive ($250) so the test is important...

    Tell me what you find..............saailer


  • David Burbee
    David Burbee Feb 04, 2010

    Hello! Yes, The O2 code is an effect not a cause....saailer

  • David Burbee
    David Burbee Feb 04, 2010

    Hello! That is confirmation that it is a fuel control problem...Test the two components and I'll take it from there...If you want help taking the readings just ask........saailer

  • David Burbee
    David Burbee Feb 04, 2010

    Hello! Your last comment is another piece of evidence that points at the MAP or the TPS...

    Need meter readings to test for the bad component...Take a look at the throttle body intake air control valve (flapper). Check to see that it swings freely and isn't fouled with carbon...Also check all vacuum lines where they common up at the throttle body...Pull the PCV and make sure the little ball that lives inside rattles when you shake it...

    Let me know when you have readings and results of visual inspection.....saailer




  • David Burbee
    David Burbee Feb 05, 2010

    Hello! The MAP sensor is not defective...Next the TPS and then a visual inspection of the throttle body air valve, and PCV...Stick with it...We will solve without excess spending...

    Keep me posted..................saailer


  • David Burbee
    David Burbee Feb 05, 2010

    Hello! That is the guilty part...The good news is you have a solution and the bad news is the cost...I did some searching and the best price I could find for a TPS is $250...

    Good luck and thanks you were very easy to work with...Would you be so kind and rate my solution...

    saailer



  • David Burbee
    David Burbee Feb 10, 2010

    Hello! Did you install a different Mass Air Flow Sensor; or is it OEM? If it's stock and original it's the culprit...Disconnect and remove the sensor...Take a trip to Radio Shack and buy a product called DEOXIT...Cost $14.99...It's used to clean electronic parts (leaves no residue)...Follow directions an cans and clean the inside of the sensor...Be careful it is easily damaged...Clean both male/female connector pins with the product...Re-install and test...Let me know the result...If is damaged (look inside at the mesh screen). If so you'll have to buy a new one...


    Keep me posted..............saailer






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I am personally going back to answer your unanswered question. I do not know if you still need the answer, but I am going to answer it in case you still do.

Click on the following direct Link. It has the Timing Belt/MARK(S) Diagrams that you will need, complete with Instructional and Directional Diagrams.
Again my apologies...
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http://www.2carpros.com/car_repair_information/year/2003/make/mitsubishi/model/lancer/2003_mitsubishi_lancer_timing_belt_diagram_marks.htm

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