The hose that goes into heater fan on my 2000 Mercury Sable is loose, and leaking water onto passenger-side floorboard. Before finding loose leaky hose, I had checked air cabin filter, one end was slightly wet, cleared out a few leaves, and cleared out leaves and mud between wheel well and door. Can hose be tightened? Or does this indicate a bigger problem? The AC unit only blows warm air now.

SOURCE: heater doesn't work

Sounds like the heater core is stopped up. Try removing the heater hoses and backflushing the core.If this doesn't work replace the core.

Paul Thoegersen

• 95 Answers
• Posted on Dec 02, 2008

SOURCE: 2002 mercury sable heater wont get hot

you have a broken or stuck temp blend door in the heater case. or the servo motor is broken. this sits on top of the heater case

SOURCE: water leak internal on buick regal gs 1998

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!

SOURCE: 2000 MERCURY SABLE

My 2000 Sable starts blowing hot air about every 6 months. I mean like an oven. All I do is disconnect the battery negative terminal for about 5 minutes. After I re-connect the problem is solved. This solves many problems on this car, it just needs a re-boot. It must be powered by Microsoft (ha ha). Good luck. ps my auto headlamps never did work right either. Dave.

SOURCE: power steering leak on passengers side of 1999 mercury sable.

If it "RED" in color, like p/s fluid, and coming from the BOOT, then its your p/s rack assembly.The unit has to be replaced and alignment reset. ..also check the HOSES they are prone to leak also...hope this helped..GL