Question about 1992 Buick Century

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MY 1992 BUICK CENTURY KEEPS FAILING FOR EMISSIONS

I GOT THIS CAR FROM A FRIEND AND IT WAS IN A GARAGE FOR A LONG TIME. I FIXED BRAKES, CATALYTIC CONVERTER, TUNE UP,OIL CHANGE, AND I HAD A READING OF 131 AND IT NEEDED TO BE 100 THEN THE MECHANIC PUT IN SOME SORT OF TREATMENT IN THE GAS AND I FOLLOWED THE DIRECTIONS TO FILL IT UP AND DRIVE IT TILL ALMOST EMPTY THEN FILL UP AGAIN THEN GO TO INSPECTION. EMISSIONS READING WAS 432 NOW AND THE STATE HAS INCREASED THE NUMBER TO 220 TO PASS. I DO NOT UNDERSTAND WHAT IS WRONG ! HELP????

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Most likely its your EGR valve Find it take it off clean it with a cheep metal brush, get a coat hanger and clean the ports in the manifold.

Posted on Jul 11, 2009

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What numbers is this No2?Ho2,Co?anyway check for any vacuum leaks,has he clean out the throttle body , test the O2 censer .

Posted on Jun 26, 2009

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Posted on Jan 02, 2017

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1 Answer

2002 buick century manual


Bleed the brakes with the battery disconnected first. Then rebleed with the motor running.

Jun 02, 2014 | 2002 Buick Century

1 Answer

2002 buick century brakes will lock after it has been parked for 5 min or 5 hrs and will not move until I go from forward to reverse several time. Intermittent but frustrating.


While I don't have a specific solution to your complaint, I did find a site that lists many, many service bulletins related to braking problems on the 2002 Buick Century. Why not take a look to see if any of these complaints sound like yours.


http://www.faqs.org/car/buick-century-2002/service-brakes/#b

Good luck.

Oct 11, 2013 | 2002 Buick Century

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1994 buick century brakes went out fluid leaking from rear


Brake lines by rear door on drivers side are a common failure point. lines under door failing can cause a total brake failure. Just replace and bleed the lines.

May 31, 2012 | 1994 Buick Century

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1996 buick century, I had a tune up and egr valve


Have an auto parts store check for the code. It is possible that you have a bad O2 sensor or your catalytic converter is clogged.

Apr 10, 2010 | 1996 Buick Century

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1987 Buick Century - stalling out


I had a 1987 Century and when mine started acting like that I took it to a garage and they hooked it up to a computer tester for free. Is she getting the check engine light coming on? They found that mine was running (lean) which ended up being my fuel pump. Which is in the gas tank and can be pricey to get done, between $250-$350 and of course the filter would get done at the same time and that is only$20

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Front brakes on 1999 Century


even thoughy our car may have low miles brakes can easily fade off fast especiall yin stop and go traffic.... that is not uncommon they need to be replaced.

Aug 01, 2008 | 1999 Buick Century

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2002 Buick Century anti-lock brake problems


i recently had this problem too, except i had all the lights on (ABS, service vehicle, trac-off, AND service engine) they are all easy to fix without spending more than 20-30$ for labour (depending how much your mechanic charges you) mine did it for free and he found out why the engine light is on afterwards too. so to fix all these lights (abs, trac-off, and service vehicle you MUST get another ABS cable (i went to a garage, they were towing a GM vehicle to the junk yard so i grabbed some scissors and cut BOTH abs cables on each side (good thing i did because one was bad) and braught them to my mechanic. the reason the lights come on is probably a defect or in my case my mechanic said it was salt buildup in the wires (on the drivers side) so he cut the wire off and rewired the new one and BOOM all the lights came off (service vehicle, abs, and trac-off) now for my service engine it says catalytic converter but im trying to put some fuel system cleaner to help it out i read somewhere that this is a defect of the car, so if you dont have that light yet, SELL your car ASAP for as much as you can get for it (after fixing the lights of course) and always google (car name+recalls) in the search bar to see what youre getting into, take care

Jul 12, 2008 | 2002 Buick Century

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