Question about 1999 Buick Century

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1999 buick century limited

This started at the end of last summer after running car and stoping for a short time maybe 5 to 30 mins. car will not start but it only happens on hot days above 78 to 85 and it will start and run fine after it sits for 10 to 30 mins and sometime 1 to 2 hours it ran all winter and did not miss starting onetime but summer is here and on the hot days it is doing it again so can anyone tell me that is is

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  • greyfoxva May 31, 2008

    we have a new gas cap on it now and a fuel relay and still the same full tank or haft tank before we put gas in or after we put gas in still the same again it only will not start when the weather is hot

  • jefaehn Aug 01, 2008

    I have the same problem on my 1999 Century. One mechanic replaced the fuel pump ($800.00) and the other shop replaced plugs, wires and coils (another $800) and the problem still exists. Only happens on really hot days. The car only has 30,000 miles on it. I have also put injection cleaner through it several times. Is this problem electronic?

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If your caar is a v-6 or 6 cylinder motor you might have a injector shorting when hot this is very coming on those cars and very very hard to find from mechanics i'm a ase certified tecnichian and had found this as coming problem on this cars
you can ask to a mechanic to check the resistance on the injectors or when it happens again unplug one by one and see if car runs again if it does then replace all the injectors
because shops will keep trowing parts and labor trying to guess

Posted on Jun 02, 2008

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1 Answer

1999 buick century instrument cluster resistors loose on board


4 RESISTOR ON RIGHT SIDE >> CHECK SOLDERING >> RESOLDER , IF MISSING THAN GO TO RADIO SHACK & BUY 150 OHM RESISTORS >> INSTALL THEM & PROBLEM SOLVED >> 4.16 5 MIN, + 20 MIN REMOVING & REINSTALLING CLUSTER !!

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I'm trying to perform a radiator drain (flush) on my 1999 Buick Century Limited. I need to know how.


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then run in top hose to flush back then lower hose again. that should clean it out.

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I have a 1992 Buick Century that runs and drives fine for about 30 min then dies. If i wait for 30-60 Min it will start up and run again for a while. Replaced the fuel pump and that did not fix it.


maybe a coil pack, module, or computer is to blame.

I would recommend that you take the vehicle to a garage that can do an engine analysis that can narrow down the problem.

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I have a 1999 buick century that is hard to start.


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1 Answer

Left the map lights on all day and now car won't start...1999 Buick Century...charged battery but still wont turn over


sounds like the battery got run down so far that it wont hold a charge-maybe take the battery out and take it to a parts store that can "load test"the battery-some testers can actually test the battery even if its dead-also when u charge a battery u have to make sure the clamps from the charger make a good connection. i read somewhere that everytime a battery goes dead it shortens the life of the battery-FYI most batteries last from 4-5 years if there are no other problems with the car.hope this points u in the right direction.

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2002 buick century heater resistor burning out


Sounds like something is drawing too much current for the resistor. Maybe blower motor going bad....

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1990 Buick Century 3.3L Check Engine Light comes on, stalls.


Need to check for fault codes. Possibly a faulty sensor causing the fuel system to run rich or lean.

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Feb 06, 2009 | 1999 Buick Century

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