1998 buick lesabre stays accelerated - 1998 Buick LeSabre

SOURCE: Buick Lesabre 1998, How you check the coil packs?

you can take them off and have them tested or you can pull the plugs and there should be two plugs that will be really black follow those wires back to the coil that is bad. or you could also have someone crank it while you stick a screwdriver in the end of the wire on the plug and hold the screwdriver next to the engine or a good ground and there should be a bright blue spark but be careful and dont touch the car or it might tickle a little bit

SOURCE: Re: Location of the radiator drain plug on a 1998 Lesabre

its in the lower right or left hand corner of radiator.
refer to this links diagram for more help.
http://www.autozone.com/addVehicleId,2380201/initialAction,repairGuide/shopping/repairGuide.htm?pageId=0900c152800b1cd7

SOURCE: I have a 1998 Buick Lesabre that keeps losing antifreeze.

Buick 3.8's are notorious for intake manifold leaks. If you are sure you are not leaking externally (look under the alternator and on the top of the transmission), it could be an intake manifold leak. I've replaced mine...I didn't think it was too hard a job for an amateur.
It could also be a head gasket, but the intake leaks are much more common.

SOURCE: where is pcv valve 1998 buick lesabre

Remove the sight shield from the fuel rail. (it's the large plastic shield that dresses up the engine) As you stand in front of the car the alternator is located on rear left side. In front of it is an electrical connector to the MAP sensor. Remove it. Press the PCV valve cover down and rotate it 1/4 turn counterclockwise. It is actully on the intake manifold. Lift the cover, the upper O-ring and the spring from the housing. Remove the pcv valve and the lower O-ring from the intake manifold.

SOURCE: 1998 buick lesabre dome light stays on while

Open the door and where the hindges bolt to the body of the car you should see a push button type switch.Once you have located the switch, wiggle it to see if it still has a snug fit, also work the button in and out to see if it will turn the dome light off and on.If you can not find the switch, but you find an empty hole about the size of the end of your babby finger then the switch probably came lose from vibration and fell down inside. It will half to be retrived and reinstalled.Repeat for each door untill you find the problem switch. The problem is usually with the drivers door because it gets the most use.