Question about 1992 Buick Century

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1992 buick century..

Service engine soon light goes on and off. the car has 132,000 miles on it

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  • yadayada
    yadayada May 11, 2010

    what is the trouble code?

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  • 365 Answers

Your O2 sensor(s) are fouled. This could be an expensive repair ($200) or inexpensive. Try adding "SeaFoam" ($9) available at Advance Auto Parts and WalMart add to your tank per instructions on the can...(cept you have to drive the car at least 100 miles thereafter).
Good Luck

Posted on Jun 26, 2009

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How do you reset the service engine soon light


Put the key into the ignition and turn it to "Run." Don't start the engine. Press down slowly and fully on the gas pedal, then release it. Do this three times in five seconds. Watch for the "Service Engine Soon" light to start blinking. This indicates that the system is resetting itself. Turn the ignition to "Off" and wait one minute. Start the Century's engine. The Service Engine Soon light will flash for a moment, then turn off. If it doesn't do this, repeat the process.if all else fails...Disconnect your battery for one minute and then reconnect it again that should reset it, if the problem that you have in your car is still there then that light will come on again after whille then you gona need to run diagnostics on your car to find the problem if it will not come on again then that should take care of it.9-08-2006Let me tell you about my experience with my 1995 Buick Century.When my buick sits for a while while running, the radiator fan comes on, you know?Well, after the fan does its thing, SOMETIMES the "SERVICE ENGINE SOON" light comes on.THEN.....when this happens again, it may take a couple times of after the fan comes on, then....the light goes off !!!Its like it needs to go thru some sort of "CYCLE" , THEN THE LIGHT GOES OFF...Who knows though,you may have LEGITIMATE problems with your car.good luck.

Aug 17, 2014 | 2003 Buick Century

1 Answer

Buick Century 2001: the Service Engine Soon warning light came on and was diagnosed as code P0740 Torque Converter Clutch Circuit Open. The transmission fliud has been replaced and the Engine Service...


change your fluid and filter in teansmission WARNING :start car and shut it off just before you do because if you dont you will burn the bands up.I recommend Lucas transmittion conditioner as well.My grand prix calls for sythetic 2003 7 quarts so check with salesman and see what kind it calls for and also count the bolts and pattern before you buy so you make sure you have the right one before you start your project.

Jun 11, 2011 | 2001 Buick Century

1 Answer

Service Vehicle, Trac Off, & ABS lights 2001 Buick Century.


I just put in new fron pads in my 2000 buick century and the track off and the anti lock brake light and the service engine soon stays on

Jun 16, 2010 | 2001 Buick Century

1 Answer

Routine maintenance for 1999 Buick Century


have car scanned to identify the problem code as long as the light is on. go to any auto parts store and they will scan it for free.the codes will tell the problem.

Mar 25, 2010 | 1999 Buick Century

1 Answer

2001 buick century. engine light went on, not sure why? is this just a standard light that comes on every couple thousand miles? need help


no the service engine soon light comes on cause there is a fault code stored you will need to have it scanned and find out what code it is
before i can help you

Dec 04, 2009 | 2001 Buick Century

1 Answer

Service engine soon light comes on my 2002 Buick Century that only has 54000 miles. What could this mean? Nothing seems wrong with the car. It is oiled regularly.


the service engine light means that the computer has detected that there is something wrong. it doesn't mean that it is anything serious. it could be something very simple. if you want to find out what it is exactly and avoid repair shop costs, take it to auto zone or another parts store. most of them have scanners that they will hook up and tell you why the light is on without charge. 

Oct 22, 2009 | 2002 Buick Century

1 Answer

Servie engine light on traction light goes off


It could be your wheel bearings, jack your car so one wheel is off the ground. Make sure the vehicle is properly blocked. Firmly grasp the tire/wheel an shake it back and forth for play.

May 23, 2009 | 1999 Buick Century

1 Answer

Service engine soon light/security light


Probably the dealer will reset the system it for free.

Mar 25, 2009 | 2003 Buick Century

1 Answer

Buick Century 1997


Replace spark plugs and wires. If thats not it, its your intake gasket. Mine did the same thing. I am working on putting my third intake gasket in my buick. 137740 miles

Aug 08, 2008 | 1997 Buick Century

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