Question about 2002 Buick Century

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Service soon light on, code says emmission problem. bought a gas cap and do we drive it for 100 miles and it will turn off itself?

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6ya6ya
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Posted on Jan 02, 2017

  • 321 Answers

SOURCE: Service engine soon light

You need to have the vehicle scanned or pull the code out with a code reader,and address/fix the code.If you do not repair the problem,you can clear the code,but the service engine light will come right back on.To clear the code,you can disconnect the negative terminal on the battery for at least 20 minutes,then reconnect the battery,but the car is going to be hard to get to idle,because sometimes the computer has to relearn how to idle the engine without stalling.Good luck.

Posted on Jul 10, 2008

  • 491 Answers

SOURCE: "Service engine soon" light

take car to any local parts store and have them check for codes. or a auto repair shop or the dealer. i would take to local parts store cause they will do it for free and give you the codes and tell you what they mean

Posted on Oct 18, 2008

  • 67 Answers

SOURCE: code displays po440 ;i've replaced evap cannister

your local dealer can perform a smoke test to test your evap system for leaks

Posted on Nov 12, 2009

stumann2
  • 193 Answers

SOURCE: service engine soon light on

That light indicates a malfunction if the computerized engine management system (fuel injection, spark, cooling system). There are literaly dozens of things that can cause the light to come on. You will need to take it somewhere and get the code that caused the light to come on. Then we can help you find the problem. Some of the auto parts chains (AutoZone, O'Reilly's, Advance, etc.) will get the code for you at no charge. Then repost your problem and include the trouble code.

Posted on Feb 24, 2010

  • 2309 Answers

SOURCE: The

the eec is the sensor for the evap system, either the gas cap is leakin or one of the hoses, the system is made to keep the gas tank at minus 1 lbs pressure, anything that disrupts this will send a message, could also be the fuel tank itself

Posted on May 26, 2010

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Dashboard


I'm not a mechanic but I've had this problem with a dodge truck and a Saturn. I bought a new gas cap and the problem stopped. It takes awhile after you install the new cap for the emmission control system to clear. Something about air gas mix. I don't know about the Trac problem.

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