Question about 2000 Mitsubishi Galant

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Just put in second new battery , first lost all power in car after two days. Now, with another new battery car won't stay unless I'm hitting gas hard.

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  • screwedagain Jan 08, 2009

    I am having the exact same problem on my 2000 galant. Someone said if you install a new battery it takes time for the computer to reset this true?


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it has happened to me before. Either you can wait for computer to readjust to the throttle body or clean it. When I find a link on how to clean the throttle body, i'll post it here.

Posted on Jan 12, 2009

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You must do a charging test to verify the alternator output. The output for your car loaded, should be around 13.9v and 14.2v. This seems to be a problem of the rectifier diodes and the voltage regulator, The rotor must be check also, along with the stator. A simple test. turn the lights on and try to blow the horn if it fails the culprit is the alternator. The battery just keeps the juice for needed times. So do a voltage test with a multimeter if less than 13v take it to the shop.

Posted on Jan 15, 2009

  • Angel M Santiago
    Angel M Santiago Jan 15, 2009

    Try the idle air control motor and sensor, also do some dusting in the throttle body. Some old carburator cleaner has done the magic in some cases. Don't overlook ground conections


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Try disconnecting the alternator for a few minutes.
It can run on just the battery that long.
It is possible the new alternator is producing too many spikes that disrupt the car's electronics.

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