Question about Buick Century

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On a 1999 buick century i had so injector problems which made the check engine light come on. I got the injector working agian so there is no miss anymore. Is there anyway to clear the trouble codes off the computer without a code reader????

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  • Paul Duvall Jul 21, 2010

    got me pointed in the right direction so yes it was helpful. thanks

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  • Buick Master
  • 6,927 Answers

You can try disconnecting the negative battery for 25 seconds,if this does not help,drive the vehicle about 2 miles or so,it may take more,and then shut the vehicle off,and then start it back up,it should go out,but if not,auto zone can do this for free with there code reader.If this was at all helpful,please rate,and thank you.

Posted on Jul 21, 2010

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A bad injector will cause a misfire. You need to replace it and see if the issue is corrected.

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ok since you said you changed the plug and coil pack, start with the injector wire harness and look it over for any shorts or grounds, also make sure the terminals on the no.2 injector connector aren't loose. if you have access to a noid light you can check to make sure the injector is pulsing. check the no.2 plug wire as well. swap it with another wire if you can and see if the miss follows the plug wire. if those fail to solve your problem and the misfire remains on the no.2 cyl, try swapping an injector. if that also fails then you may have a problem with the cyl head.

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!985 Buick Century >


Do a balance test on the injectors. Remove one injector plug one at a time. Each time you remove one you should have a miss. All 6 should have the same miss. You could have an injector going bad.

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