Question about 1997 Mitsubishi Mirage

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Mitsubishi Mirage 97 1.8 Starts shaky

I have a Mitsubishi Mirage 1997 1.8 . I have been troubleshooting the same problem for about 1 yr now. I have a Mitsubishi Mirage 1997 1.8. This problem started back in October of 2007. First of all, I got the check engine light on my car. I thought it would be due to its yearly tune up (cleaning the injection system as well). So I thought I would take it to the auto shop within a week. Before the week came to an end, I ran out of gas and had to put fuel by using a fuel canister. After this, the car would not turn on and if it would turn on, the motor would be shaky (as if running on one ignition coil vs. two). At times, it would start as if nothing was wrong and I could drive it all day, but if I turned it off then it was trivial as to whether it would start again or do its shaky fit. So as soon as it started without a glitch, I took it to an auto shop to get the tune up I promised it and to get the belts replaced along with a new gas filter. The mechanic mentioned that they had trouble starting the car and they recommended changing the ignition coils along with the ignition switch. I chose not to do anything further and took the car home. A buddy of mine helped me out a bit and we verified that the fuel pressure was at its recommended level, and we also checked to see if all the injectors were passing fuel. They checked ok but we also saw that only one ignition coil was firing. I took the car to AutoZone to get it coded and it came back with a misfire detected and a camshaft sensor problem. I read about the camshaft sensor symptoms on your earlier Q/A and they matched exactly what I was going thru. I ordered a camshaft sensor and bought the Chilton book for my car. I replaced the sensor and WOW; it fixed the problem…but only for 1 week before the car started getting shaky (especially when the motor is warm). I took the car back to AutoZone and got code PO340 “The PCM determined a malfunction exists in the electrical circuit for the camshaft position sensor A”. Does my car have 2 camshaft position sensors? (one inside the timing belt housing and another on the driver side of the motor near the crankshaft? Is this problem related to the dreaded PCM problem that I have read so much about on my type of car? I checked the wiring to the camshaft position sensor and I do not see any tears or frayed wires. I can only look so far at the wiring because they all go into some thick tubing. A couple of months ago, I replaced the ECU Computer (the one by the glove compartment)I have also cleaned all the connectors that I could physically get my hands on and to this day, the car starts shaky. Any help will be greatly appreciated on what seems to be a lost cause.

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  • Gerson War
    Gerson War Sep 22, 2008

    Thanks Robert. That is correct, I tend to go to the same place. Currently it has about 1/2 a tank.

  • Gerson War
    Gerson War Sep 22, 2008

    I'll go to autozone tomorrow and give it a whirl. I'll keep ya' posted. Thanks Robert

  • Gerson War
    Gerson War Sep 29, 2008

    Thanks a bunch robert. I ended up getting a couple of the line antifreeze bottles and WOW, I almost got drunk wth the fumes! I added the first bottle and tried to start a few times but the car does turn on and run shaky for about 3 seconds before it turns itself off. So a few days later I got a 3 gallon gas container and put it in the car along with the 2nd bottle and let it sit for a couple of hours before trying to run the car and had the same results: car starts shaky and runs shaky for a few seconds before shutting off. I wil replace the camshaft sensor with the original and the ECU computer with the original tomorrow and try again. I agree, this has been and will be a hit and miss troubleshooting issue.

  • Gerson War
    Gerson War Feb 22, 2009

    O.K   Many months later I started to troubleshoot the problem again (while my mitsubishi collected dust as I drove in my new Fit) and found that a screw inside an ignition coil was rusty and corroded.  So I tried to take it off but it falls apart.  So I scratched off the corrosion to get to some good conductive metal on the screw head and placed it back in and it runs fine.  So it ends up being a conductivity issue that is now solved.  Time to clean this mitsubishi good and take her for a spin!

  • Roberta Smith
    Roberta Smith May 11, 2010

    Do you always buy your gas at the same service center ?



    Robert

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  • 5,158 Answers

Buy yourself a couple bottles of gas line antifreeze... it's alcohol (not the kind you drink)... try that and let me know how runs after that.

Robert

Posted on Sep 22, 2008

  • Roberta Smith
    Roberta Smith Sep 22, 2008

    admittedly i didn't read it all.... from what i can see it's now become hit and miss about what repairs will fix it.... the problem is that gets expensive and you can almost end up rebuilding your car. perhaps read this post and let me know if her problems tend to be close enough to your original problem.



    http://www.fixya.com/cars/t1055544-fuel_...



    Robert

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