Question about Buick Century
Do you have a "Check engine" light or a "Service engine soon" light.Could be you are just being reminded to get an oil change as the "Service engine soon" light will come on automatically at a certain mileage after it was last reset.Your vehicle handbook in the glove compartment should tell you how to reset your "Service engine soon light" yourself. If you have a "Check engine" light on,you can have someone read your "codes" and find out what system the vehicle is having a problem with.
Posted on Apr 29, 2017
You will need to have a reputable mechanic do a diagnostic check on the car to determine the problem. This should pull up a code number in your car's computer and help point the mechanic and you in the direction of the malfunctioning part/s.
Just today, I had a diagnostic check done on mine for nearly $45.00. The mechanic was able to figure out the reason why my service engine light was staying on. I knew my car's radiator fans failed to run when car's engine was hot except when the A/C was running. I had changed out the sensors and was never able to get the light to go out or get the fans working. They were able to determine that the 25 amp fuse for the fans located under the hood was blown. After replacing it, the fans worked as they should, my car runs cooler and the engine service engine light is now out. Of course there are many possible reasons why the service engine light may come on including problems with the car's emissions. A reputable mechanic can solve your problem.
Posted on Apr 09, 2009
SOURCE: 2004 gmc sierra ext cab
Your vehicle does two types of evaporative leak detections by the on board diagnostics. Depending on the test your a getting a gross leak detection fault this is usually caused by a faulty fuel cap that is not holding the vapor in the tank. The tests have to be done under set conditions so the problem will only occur when the test is commanded and the test fails. You will get the fuel cap then the check engine light.
Posted on Feb 17, 2011
SOURCE: Tighten gas cap and then
Doesn't completely sound like a fuel pump problem...sounds like a vacuum line problem .... check your pcv ...and vacuum lines and when was your fuel filter last changed and how many miles are on the car...your fuel pressure regulator solenoid needs to be dry on the vacuum side too...diaphram could be leaking but if you can't find an obvious problem I would definiately find a qualified mechanic to dive into it...do you have access to a scan tool to read the trouble codes?
Posted on Jun 03, 2011
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Aug 02, 2014 | 2000 Buick Regal LS
The information below was complied by me, it explains what causes the check engine light to come on and the process of finding the cause.
When the Check Engine light (or Service Engine Soon) is turned on, the systems computer control unit (called the PCM) has sensed a fault in the electronic controls of the engine and/or the emission system. When this happens you will seldom feel the car engine run any different. There are about 200 possible system faults (the gas cap is just one of them) that turn the Check Engine light on, to know what has developed a problem you must have the system tested, this is called an OBD2 fault code test, Kragen/Oriley and Autozone parts stores (USA only) do this testing for free.
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