Question about Mitsubishi Galant

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2002 Galant, Stalling at lights and whenever comes to a complete stop. Check engine light came on. Took to shop and they said it read a code 4. Runs fine as long as I'm giving it gas, have to give it gas to completely turn over sometimes, but not all the time. I suspect and EGR valve problem. Mechanic says the car won't start at all now, even though I drove it to the shop myself. HELP!!!

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  • tdgatlin Sep 29, 2008

    It cranks up, although if I have been driving for a while (anything over 15 minutes) and it stalls I have to wait a while for it to start or give it alot of gas. I don't have this problem at all while in park, just in drive or reverse unless I continue to give it gas while I am doing either. Thought about the solenoid but figured EGR because of the difference in performance after giving the engine enough gas. Just had the the head replaced two months ago, if this adds any info.

  • tdgatlin Sep 29, 2008

    Seems to take a while, meaning it doesn't turn right over if thats what you mean. And I have only seen smoke come out of the exhaust once and it was white and then the check engine light came on. After this is when it started stalling , before the check engine and white smoke, it just idled erratically. Have started the car several times since then and have seen no smoke.

  • tdgatlin Sep 29, 2008

    Thank you for all your help. sorry if I'm writing too much, just frustrated with the car. Thank you again.

  • tdgatlin Sep 29, 2008

    Very Helpful, thank you for everything.

  • tdgatlin Oct 01, 2008


    Mechanic told me today that the head is cracked in the 2nd and 3rd cylinder. Told him that I just had that completely replaced in July and had not had any overheating problems with it since it was repaired. Parked the car after six weeks because it was stalling so bad. When I called the original mechanic that replaced the head, he said that it was impossible for the first mechanic to even know what cylinder it was just by looking under the hood and checking the codes. I am taking the car back to the mechanic who replaced the head gasket, bc I refuse to pay for another head gasket after driving the car for less than 1,000 miles after the initial repair. What do you think?



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  • 171 Answers

Check the Crankshaft Position Sensor. This causes this exact effect.

Posted on Sep 29, 2008

  • 5 more comments 
  • Todd Gale
    Todd Gale Sep 29, 2008

    Check fuel pump, this sounds like a no fuel problem, is it cranking over, just not firing?

  • Todd Gale
    Todd Gale Sep 29, 2008

    Some other areas to look at.

    Problem: Throttle Position Sensor

    FIX :Inspect for Faulty throttle position sensor or throttle position sensor circuit

    Problem: Idle Stop Solenoid

    Fix: Inspect for Damaged, loose, or faulty idle stop solenoid.

    Problem: Electronic Spark Control Module

    Fix Inspect for Faulty spark advance system or system components.

  • Todd Gale
    Todd Gale Sep 29, 2008

    After it stalls, and you restart it, does it take a while to get fuel to the engine and is there a some discharge out of the exhaust? If so what color is the smoke?

  • Todd Gale
    Todd Gale Sep 29, 2008

    It is not the EGR, as this would cause the problem no matter the deceleration or acceleration.

  • Todd Gale
    Todd Gale Sep 29, 2008

    Here are all of the possible causes:

    Fuel Filter
    Clogged or dirty fuel filter

    Idle Air Control Valve
    Damaged, loose, or faulty idle air control valve.

    Idle Speed Control Actuator
    Damaged, loose, or faulty idle speed actuator.

    Fuel System Pressure
    Incorrect fuel pressure being delivered to carburetor or fuel injection system.

    Fuel Pump
    Improperly functioning fuel pump or circuits.

    Idle Stop Solenoid
    Damaged, loose, or faulty idle stop solenoid.

    Throttle Position Sensor
    Faulty throttle position sensor or throttle position sensor circuit.

    Air Cleaner Temperature Sensor
    Damaged or faulty air cleaner temperature sensor or air cleaner temperature sensor circuit.

    Electronic Spark Control Module
    Faulty spark advance system or system components.

    Fuel Tank
    Contaminated fuel from rusted or deteriorated fuel tank.

    Fuel Injector
    Plugged, dirty or poorly connected fuel injector

  • Todd Gale
    Todd Gale Sep 29, 2008

    You are not writing too much, thisis what we are here for.

    Again, these are systematic checks the mechanic should have done when the head was replaced. I would think based on your description that it is more than likely the fuel pump or the Idle Stop Solenoid. Have the mechanic connect the car to a code reader and the car will tell him what is wrong. When a failure of this nature occurs, the computer registers a fault code, that with a code reader, will tell him exactly what is wrong, and from there he should be able to pinpoint the exact problem and cost.

  • Todd Gale
    Todd Gale Oct 01, 2008

    I think there is no way for the mechanic to know whether the head is cracked in certain cylinders if he did not pressure test the head. You would have water in your oil, smoke would be pouring out of the exhaust and the cars would more than undriveable. Take it to the original mechanic and let him look at it. He sounds like he is better with this car and I would not pay the first mechanic at all for his diagnosis. He sounds like he did not do a darn thing. You have made a good decision.



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