Top 10 1999 Buick Century Questions & Answers

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1999 buick century odometer light does not work

1999 buick century odometer and gear selecter light does not work. Can part of the speed sensor go out? could this be a fuse or do I have to take dash apart.

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this is a common problem and the dash cluster must be removed and sent out for repair, cost is about $175 to replace the LED (Light emitting diode) display that has burned out, this is a faxtory defect as far as this expert is concerned, it is not a fuse problem.

Posted on Jun 13, 2010

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how do I change the fuel filter in a 1999 Buick Century Custom?

I am looking for directions on how to change the fuel filter on a 1999 Buick Century Custom, V6. I need to know where the filter is located and any precautions I'd need to take when changing it.

Secondly, any ideas for a Low Coolant light that flashes even though the coolant is fine and the car doesnt run hot?

Thanks,

Philly

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Philly, the fuel filter is attached to the frame in front of the gas tank, under the driver side of the car. You must relieve the pressure in the fuel line before you start, and it is also recommended that you disconnect the neg. battery cable. After disconnecting the neg. cable, remove the gas cap. Next, look under the hood on the fuel rail for a shrader valve (like the type on a bicycle tire). Place a rag under the valve, remove the cap, and press the valve in with a plastic pen to relieve the pressure in the line. You can now go under the car to remove the filter. You can disconnect the fuel lines easily with an inexpensive plastic disk made for this purpose (only a few $ for several sizes at a parts store). Be careful of fuel in the line that will drain out, no smoking or sparks during this procedure. Should be 1 bolt securing filter to frame. Note arrow on new filter, and install in the correct direction. Replace cap on shrader valve, put gas cap back on, reconnect battery cable. The low coolant light is probably a faulty sensor signaling that it's low, when it's actually ok. Look for wires coming from the reservoir bottle, you should be able to find the sensor at the end of the wires to replace it. If you change the fuel filter in a garage, leave the door open for air circulation, gas fumes can explode easily, having the door open will help dissipate the fumes.

Posted on Apr 05, 2009

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1999 Buick Century headlights don't work properly

Sometimes the headlights will not work on my 1999 Buick Century unless I hold the dimmer switch up and I am getting the odor of burnt wire coming from the steering column. What is causing this problem and can I remove the steering wheel without deoloying the air bag? Thank you.

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Iam an ASE Certified mechanic and i had the same problem with my 99 century and i wasnt able to drive at night. After hours of testing wires we came to the problem. Its the turn signal switch assembly which is tied into the hazard switch on top of the steering column. Its all one piece with a 3 foot long wiring harness attached to it running down the bottom of the steering column and going underneath the dash. The least expensive place i found the part and had it in stock was my local Auto Zone and still the part was $200.00.

P.S. This is a common problem on these GM cars. Mine did the same thing to the tee! The lights will go on and off then they just went off for good and this solved the problem. I guarantee it. If you have any questions please email me i will do all i can to help.

Posted on Jan 30, 2009

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pic's on the location of the coolant temp sensor

pic's on the location of the coolant temp sensor for a 1999 century 3100 V6

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Top left side of the engine, below the throttle body


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Posted on Feb 25, 2010

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Location for fan blower resistor

Location for fan blower resistor 2000 buick Century

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Under the glove box, there is a removable panel. pull the panel, to access the blower motor and the control / electrical wiring. The resistor looks like this------>>>> mcneb_11.jpgcost about $30.oo at most auto parts stores.

Posted on Jan 23, 2011

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how to reset low coolant sensor on 1999 buick

how to reset low coolant sensor on 1999 buick century

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Answer

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Your cooling sensor is in the white plastic coolant tank that is on your firwall under the hood. If you fill it with coolant and the light continues to stay on. try and slap it a few times and see if that resets it. it could be gunked up. if that doesnt work fill the tank with radiator flush and let it sit for a little while and then flush the tank and refill with coolant.

Posted on Oct 19, 2010

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99 Buick Century Custom; Dash lights stopped working.

I cannot see my speedometer at night, cannot see what gear I am in day or night. All of the system lights light up just fine: low fuel, low washer fluid, change oil soon, Someone said it might be the dimmer switch. That is a $135.00 part. I was hoping it could be something simple and less expensive.

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The problem is with a set of resistors on the back of the instrument cluster. If you remove the trim panel in front of the cluster, there are four screws holding the cluster in. Remove the four screws and remove the cluster. Unplug it from the wire harness and flip it over. Unclip the back black plastic cover. Pull the printed circuit board straight out. Now, flip the board over and look on the top right quadrant just to the left of the trip odometer button. You will see up to four small cylindrical resistors. There should be four, but the solder on these seems to give out and they fall off the board. How I fixed mine was to go to Radio Shack and get 4 1/2Watt 150Ohm resistors and solder them in place of the four lousy ones. Reading the old ones, they ran from 127Ohm, to 154Ohm. Checking on other posts, I have seen that they are supposed to be 125Ohm, but either way, the 150Ohm was the closest I could get and they worked perfectly.

Posted on Aug 26, 2010

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intake manifold bolts torque and rocker arm torque

engine specs

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Intake Manifold Coolant Pipe Bolt .... 89 in lbs (7.4166 ft. lbs)
Lower Intake Manifold Bolt .............. 115 in. lbs (9.5833 ft. lbs)
Upper Intake Manifold Bolt/Stud ...... 18 ft. lbs
Valve Rocker Arm Bolt ................... 168 in. lbs (14 ft. lbs +30 degress

Posted on Feb 06, 2010

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1999 buick century cigarette lighter fuse

1999 buick century cigarette lighter fuse

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open the passenger door fuse box located there.

Posted on Jun 08, 2010

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code p0449.

got this code p0449 evap vent valve.i need some help please. just read some one said check gas cap maybe i put it on to tight?feels little loose side to side.but when i hooked it up to codereader it said p0449 evap vent valve? & where can i find it so i can change?

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Answer

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GM uses an EVAP solenoid that is located under most vehicles near the gas tank and connects to the charcoal filter can. Codes can be set and will drive you crazy trying to figure out if you have a bad gas cap, broke lines---this is where they try to get you to do a smoke test, or you just think the vehicle is no good! Relax, it is usually an easy fix and one GM has known about for years but continues to make easy money off people who cannot do basic maintenance. Now one code that comes up is usually P0449, along with maybe a warning to check the gas cap to see if it is on tight! GM will gladly read this code out for you for around $98.00 and then fix it for another around $100.00 which includes the EVAP part which if you buy at their parts dept. will cost you $32.00 and my dealership parts man told me they sell one a day! It is easy money for them and obviously a defective part they keep using for the last 10 or 15 years but hey, its money in their pocket. Here is how to fix it with ONE single common screwdriver! Get under the vehicle after putting on the parking brake. The EVAP solenoid is easy to spot near the gas tank and it has one electric connector which disconnects by releasing the plastic clip and pulling the connector out. It also has ONE air line connected which goes to the charcoal cannister which also can be removed with the one screwdriver. The whole EVAP solenoid and air can can be removed with the screwdriver which makes it easier to unplug the electric and air line. Get a replacement from the dealer as they certainly are familiar with this part as they sell LOTS of them. Then just go under and plug the new one in and the problem is solved. Now if you do not have a tool to reset the codes, try the local parts places as most of them will do a reset for you.

Posted on Jan 24, 2010

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1999 Buick Century Century

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