Top 10 1998 Buick Regal Questions & Answers

I had this same problem. It is caused by water running downe the windshield and into the cabin air filter located under the cowling on the pasenger side. It is really easy to fix.

I've been told all "W" body GM cars have this same filter set up, so all 1997 through 2004 Buick Regals (mine is a 2001) and many other GMs have this problem. MY 2001 Regal would get 1-2 inches of water on the passenger side floorboard after a rain.

There are three things that can be done to prevent this and all three are quite easily accomplished. There is a water diverter weatherstrip above the filter that can become dislodged. Mine was out of place even though the filter had never been changed. I used RTV to glue this weather strip back in place. I also made a cover out of an old plastic 1 gallon antifreeze jug by cutting the ends off and then splitting it down the middle and doubling it to cover the filter but still remain above it so that air is not blocked. This is so that even if the diverter becomes dislodged again this still won't let water get to the filter. Once you pull the coweling, which is very easy to do with one plastic screw like fastener and two plastic "rivets" that you just pull out with needle nose plyers, you'll see what needs to be done. You'll need to use the ignition key to stop the wpers in mid-stroke on the windshield and open the hood to get clearence to the cowling. Speaking of the coweling, lastely I put a bead of RTV between the coweling and the windshield before puting it back on.
So for one tube of RTV, one old plastic jug, one hour of time using a pair of pliars and a knife I have fixed what had been a real PIA water leak. EASY!

I had the same problem. My mirror has map lights so I disconnected the wiring harness from the mirror. I had trouble getting this done, but there is a small clip you must pull back to release the wiring. Once I had the mirror free the button that you must glue back on the windshield is attached to the mirror by a strong metal spring clip. I placed a screw driver under the button and popped it out of the clip. Make sure you mark the outside of the windshield first before you clean off the old glue so you will know where to glue it back. I just placed a small piece of duct tape on the outside windshield. MAKE SURE YOU GLUE THE BUTTON ON CORRECTLY, so the mirror will slide back on. I let the new glue dry for several hours before I tired to re-attach the mirror. The directions said 15 minutes, but that is not long enough. I also sprayed the clip with some WD-40 so it would slide on the button easier.
Hope this helps

do you have a sun roof, if so start there, because there are two hoses at the back corners of the roof pan that allow water to drain, if they leak, they will soak the rear floorboards, and if not that check the door jam seals.(note that if the plugs on the floor are missing that will be verry hard not to have wet carpet)........let me know?

Replace with a new or used one.

The coolant sensor should be located near where the upper radiator hose is attached to the engine and has a wire connector on it with 2 wires. It's the only sensor near there. Then there's the sensor that'll be attached to your reservoir tank somewhere along the firewall

Hello! The power steering fluid reservoir is located behind the alternator on the left hand side of (as your facing) the engine. Here is a picture to help you locate it - the arrow is pointing at the cap to the reservoir.




Hope this helps and good luck!

Same problem on my 98 Regal GS; remove glove box, locate the blend door actuator, (black odd shaped box with metal "ring"). Remove the box and manually turn the blend door shaft it was attached to. If you get cold air, it's the actuator you removed. About 30-40 dollars.

There is a e/m button on the dash by the mode and reset buttons that switches the odometer from english to metric or vise versa.

Should be a button on the side of the shifter - push it and the light would go off.
It is how you change from regular to performance shifting.

Depends on what went pop. What color was the smoke? If it was white and the engine was hot you may be lucky and just have blown a radiator hose. If the smoke was black or blue that would be more in line with an oil leak which may still not be the end of your car. You need to have someone look under the hook and determine where the pop sound came from.