Question about 2000 Toyota Celica

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Car dies when driving at night

When driving with headlights off during day, car runs fine. when lights are used at night, lights go dim and car dies. battery drains down and when recaharged will run for awhile. new battery and alternator is good.

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  • Toyota Ed May 11, 2010

    The fuel injection computer will stop working when the voltage is below 10.5 VDC. Methinks that your alternator is not developing the necessary 14.4 VDC that is the optimal output for the alternator. Get the alternator output rechecked, with and without the headlamps on. It should be 14.4 VDC.

    Nothing less. Anything less, you either have something on drawing the volts (big stereo amp, etc), or the alternator is no good. The alt should always procuce 14.4 regardless of the light being on or not.

    Get the volts checked & get back to me for additional help.

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Here is a tip check to see if all ur contacts are clean and making a proper connection I once had a problem with a car that was doing the same thing i bout a new alternator drove it around and battery died on me battery was good so i took it to auto zone and they did a battery inspecting which includes the alternator being checked it turned out that the new alternator was not good
Another tip check ur alternator wire harnest it might not b locked into position sometimes the clip that locks the harnest in place breaks and if u think that just by connecting it It will work fine any bump on the road will cause ur harnest to move or not make contact

Posted on Dec 23, 2013

When alternator warmed up it would not put out proper amps. replaced and works fine.

Posted on Oct 31, 2008

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