Question about 1998 Mitsubishi Montero Sport

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Engine keeps dying after I turn it on.

I took my montero sport on a short vacation to Mexico in the Sea of Cortez. I had no problems. However I left my lights on overnight and the battery was dead in the morning, I charged it for most of the day and it started up. However, driving home I started having problems with the car dying everytime I came to a stop and I braked. The idle would be up and then suddenly drop and the engine would die. I would start it up and had to keep my foot on the gas petal to keep it from dropping again and dying on me. Do you know why it is doing this? Thanks,

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  • bmga4881 Aug 14, 2008

    I also have that same problem... i have since replaced the battery and alternator along with the fuel and air filter. i have no check engine light on and now when i turn the car on it idles fine for a period of 5 minutes or so and then begins to rev up and down before shutting off.

  • mvpthakkar Jan 04, 2009

    i had a similar problem but with a different vehicle.

    It was a 99 Toyota Camry with nearly 300,000 miles on it.

    And like you everytime i would stop at a light or stop sign the idle would rise and then suddenly drop.

    A temporary solution that would fix it would be to simply put the car in to neutral and one foot the the brake and step on the gas and keep the car's rpm at 2000-2200.

    I took to a shop and they replaced the starter.

    Since then i never had that problem.

    But before you off and replace the starter. I would reccomend that you take your car to a autozone and ask them to check your battery and alternator.

    There is no charge for those services so there is problems there.




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I had the same problem when I did battery maintenance on my 1988 Montero Sport. The problem was explained to me, that the car's electronic pollution control computer data was erased when the battery is disconnected or the battery totally discharges. The car's computer uses this data to regulate idle speed and other engine factors. The solution given to me was to recheck the battery connections (make sure they are clean, and tighten down), start the vehicle, and just let it sit and idle for about 15 - 20 minutes (without racing the engine or driving the vehicle). This will rebuild and repopulate the car's computer engine data it needs to make adjustments. Hope this helps.

Posted on Dec 17, 2008


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