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Mercury Grand Marquis Water Leaks

48 messages,  Last post on Apr 09, 2013 at 10:11 AM

You are in the Ford Crown Victoria/Mercury Grand Marquis Forum.

What is this discussion about? Mercury Grand Marquis, Auto Body, Auto Repair, Sedan

Messages Page 3 of 5

#18 of 48 Re: 2001 Merc water leak [beaton38] by mike41356

Oct 11, 2007 (11:54 am)

Replying to: beaton38 (Oct 11, 2007 9:11 am)
Hi Bill;
 
After my first posting, I did called the local Ford dealer in which I have a friend working at the parts dept., and asked him if he had heard of that problem, he said no but in fact he has a 92 Marquis as well and it leaks at exactly
the same place, but he did not mind as long as it drives good. After checking for the gasket he said the same thing mentioned here, they sell the entire plenun for $65.98. So
I will start today by taking that air intake out and prepare the gasket myself with plummers putty, and observe
how it behave before closing that area again. I will also look for a drain tube that should be somewere around the A/C plenum at the engine side firewall to see if it is clogged., By the way do you know were it might be?. Thanks.
Mike

#19 of 48 Re: 2001 Merc water leak [mike41356] by vernes97

Oct 11, 2007 (5:39 pm)

Replying to: mike41356 (Oct 11, 2007 11:54 am)
That black plastic tray which is under the plastic cover with the slots and holes for the wipers was filling up with water on my 97 crown vic. After I got the leaves and other debris out of it I felt a small round hole at the bottom right side.This is the weep hole that I referred to in my previous post. I swished a 12" cable tie around in it and water immediately began draining behind the drivers side front wheel. I put it all back together and have not had a problem since August. I have no idea why the gasket should have to be replaced if the water does not overflow as it is draining properly.

#20 of 48 Re: 2001 Merc water leak [vernes97] by mike41356

Oct 12, 2007 (8:22 am)

Replying to: vernes97 (Oct 11, 2007 5:39 pm)
Last night I pulled the wipers and plastic cover (everything clean under there), pulled the intake at the right side, which by the way was perfectly clean inside that
housing. I did find the weep hole and make sure was not clogged because I swished the area with the cable tie.
After checking the gasket I've decided it was deformed mainly flattened, so I removed it and applied a thick bead of silicone and tight everything back. I haven't tested out yet, and it's sunny today, so later on today I'll spray some water on that area to see if it made a difference.
Will post result, but still can't understand (as vernes97
mentioned on previous post) if nothing is clogged and water
runs free on that area why water sips thru there and ends up
inside?.

#21 of 48 Re: 2001 Merc water leak [mike41356] by vernes97

Oct 12, 2007 (8:07 pm)

Replying to: mike41356 (Oct 12, 2007 8:22 am)
I hope yours is fixed. A mechanic at a used car dealer told me that they routinely fix interior carpet leaks by doing just what I did. MY 1996 E350 was doing the same thing last year but was much easier to fix as there was a foot long hose that drained the wiper tray into the inside fender area.It was totally clogged with leaves and stuff. I didn't have to remove anything as the hose was right out there in plain sight and easy to remove.
    One thing I didn't mention about the crown vic is that I drilled a small hole just to the right and of that weep hole after all the water drained out in the plastic tray as insurance. The hole was in the side rather than the base of the tray. My carpet has stayed dry after numerous heavy rains.
    Good luck and best wishes.

#22 of 48 Re: 2001 Merc water leak [vernes97] by mike41356

Oct 16, 2007 (12:54 pm)

Replying to: vernes97 (Oct 12, 2007 8:07 pm)
I've been checking every day for leaks after my fix and so far so good, and it did rain quite a bit this morning.
I still have the carpet to one side to allow more time to dry since it was pretty wet before I worked on it. Hopefully it will stay that way. Thanks for the good advice.

#23 of 48 Re: 2001 Merc water leak [mike41356] by mike41356

Oct 19, 2007 (8:43 am)

Replying to: mike41356 (Oct 16, 2007 12:54 pm)
Just to update, two days later it rained cats & dogs and unfortunately it leaked again. Back to square one, pulled again that plastic cover on top of the fan intake and the silicone I've applied was not that thick, so I clean everything up again and this time I've made a thick strip of plummers putty and sealed real tight. I did this just to
see if it really stops the water. Once I'm sure I will prepare a rubber foam gasket of a template I've made from the plastic cover. So far with the hose it doesn't leak, but nothing like a good'ol Florida rain. Will keep all posted.

#24 of 48 Reply to Merc water leak by vernes97

Oct 19, 2007 (7:40 pm)

I'm starting to think that maybe the idea isn't so much to stop the leak as it is to give the water another destination like I did when I drilled that small hole in the side of the black plastic tray to the right of that weep hole. Still dry after 3 days of rain and original fix done in August. As I mentioned before my 96 E350 has a hose hooked up directly to that tray going right to the inner fender and right to the ground- you can see it run out when the van is moved.
    The whole thing looks like a case of bad design with the crown vics and GMC's-sorta like having to close the barn door after the horse is loose.
Good luck and best wishes

#25 of 48 Re: Reply to Merc water leak [vernes97] by mike41356

Oct 22, 2007 (12:47 pm)

Replying to: vernes97 (Oct 19, 2007 7:40 pm)
Well I don't want to get you tired but again it rain and guess what, it leaked at the same place. So last Saturday I just couln't understand why if everything looked pretty sealed it will still sips inside thru the lowest bolt of that black plenum inside the car, so I pulled out the right front tire and moved the inner plastic fender just a bit enough for me to see another angle of that peep hole. At the same time I have my son blow air with the compressor hose just where I was seeing the water coming in, and sure thing it was around the peep hole, not in the actual plenum peep hole. So I spread a bead of silicone around and put everything back. Hopefully this time it'll do the trick but I haven't tried out yet, I will let it dry really good.

#26 of 48 Re: Reply to Merc water leak [mike41356] by vernes97

Oct 22, 2007 (9:07 pm)

Replying to: mike41356 (Oct 22, 2007 12:47 pm)
I never removed that black plastic tray. Once I seen it all filled with water I started looking for the drain so I never got as far as the gasket under it. I probably just got lucky by clearing that weep hole out and going no further. If yours keeps leaking I would either park the car with the front facing downhill,or drill a hole under the carpet to let the water out. Or,if all else fails, take it to the Ford stealership and let them do it. If it wasn't for this leak problem these are pretty good cars.

#27 of 48 Re: Reply to Merc water leak [vernes97] by mike41356

Oct 23, 2007 (11:10 am)

Replying to: vernes97 (Oct 22, 2007 9:07 pm)
I think I 've finally got it, it rained last night and is all dry inside, so the problem was that I was looking in the wrong place all this time. I was already considering throwing a gold fish and have my own fish tank in the passenger side of my Marquis.
Really it has been an excellent car and still is, I just didn't wanted to give up on him.

Messages Page 3 of 5

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