Question about 2003 Pontiac Grand Prix

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Pontiac grand prix 2003 has trouble starting. I turned off the car after driving it for 15 miles. 10minutes later, I tried to start it again and it wouldn't start. It makes the clicking sounds as if the starter is working, but it start the engine. After waiting a day and a half, I tried it again and it started but now it chokes a little bit between when the starter clicks and the engine starts. What could be wrong with it?

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  • teegurl May 09, 2010

    Hi thanks for your input. I just measured the battery with a voltmeter, and it read about 12.45v with the car off. When we turned the car on, it bounced down a bit and then stabilized at about 14.48v. Is that too high? B/c it read just about 12.5v, it doesn't appear like the battery is bad.

    Btw, I did replace the battery once sometime in the past maybe 3yrs. The pos and neg terminals still look clean. Not sure what cables you refer to about possible corrosion. Thanks.

  • teegurl May 10, 2010

    Hi vtaylor2,
    I just took the car back to the auto shop and they checked out the alternator and battery and looks like you were right that the battery needs replacement. Thanks for your help! Btw, I gave you a good rating.



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You have a bad battery, if it more than three years old it is suspect, measure voltage it should read 12.5v minimum, if not trash it and install a new one. but also it could be as simple as very corrosion on the cables and post, if they look dirty, clean up with a wire brush real good and tighten it down firmly. Batteries are designed that if you lost you alternator and are just running on battery power and the car finnally gives up, if you wait another an hour, it has a reserve capacity that will allow you a couple more miles usually. i was stranded in the desert one time in the middle of nowhere 60 miles from home and used this technique, i had to do it three times before i got home but then that thrashes the battery and you'll have to replace it. Make sure that your belt is not loose and that its charging up the battery as you drive. You can also check this my monitoring your analog gauge to see if its on the plus side, if you don't have this gauge, then just use a voltmeter and check it while running, it should be around 13v, if its charging the battery.
can you rate this. thanks!

Posted on May 09, 2010

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Check your battery maybe weak
make sure you charging system is working properly

Posted on May 09, 2010


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