I changed my spark plugs on my 1999 Buick Century. After I changed them and started my car it just kept revving up. I was wondering what the problem was, if I maybe tightened them to tight? Any ideas, I did have trouble getting one of the back wires off the plug. All of the wires are connected to the right plugs.

Marvin

• 85242 Answers
• Posted on Oct 29, 2008

SOURCE: 1995 buick century transmission trouble

Most likely causes is the OD shift solenoid or less likely the VSS

SOURCE: How to change a water pump on a 1999 Buick Century 3100?

the water pump on the 3.1 isnt to hard to change ...

1. Disconnect the negative battery cable.
2. Partially drain the cooling system into a suitable container.
3. Remove the drive belt guard.
4. Loosen the water pump pulley bolts before removing the drive belt. This should help keep the pulley from turning as the bolts are loosened.
5. Remove the drive belt. Remove the water pump pulley bolts and remove the pulley.
6. Remove the water pump bolts and separate the pump from the engine front cover.

SOURCE: Heater/AC Fan does not work in our 1998 Buick Century

Fan will be under dash on passengers side , Removing glove box might be needed, Gm also uses a blower resister ro control fan speeds. First check your fuse and then check and make sure your getting 12 volts to the terminal at the blower, You could have a blown fuse, a bad switch, or a bad resister , if your getting voltage to blower motor then most likely it will be the motor. These are not to difficult to change. I hope this helps, please be aware I can only guess at what the problem is from my past experience.

SOURCE: 1999 Buick Century thermostat question.

patience , and a 13 MM wrench , you gotta get your arms in there deep , that lower bolt does not need to come all the way off , the thermostat housing has a slot at the bottom for easier access , loosen it about 3.4 of the way and you can get the housing out , experience says a premium thermostat will give you grief trying to reinstall , get a regular duty thermostat .reverse procedure.

SOURCE: crossed wires while changeing plug wires on 3100v/6 with coilpack

Hi Raynellmarti. Here is the image of the firing order on a 3.1L Buick that c17hydro was trying to post for you. He encountered an issue uploading them, and sent them to me so that I could try and post them.