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Thread: Mysterious water leak beind IP right above accelerator pedal

  1. #1

    Default Mysterious water leak beind IP right above accelerator pedal

    Due to the recent heavy rainstorms here in Germany I noticed water leak from up above the accelerator pedal. Itīs dripping exactly onto the pedal. Right up there behind the IP in the cowl area there is a 3/4" hole in the insulator padding with a smaller appprox. 1/4" hole hole in the sheet metal. It looks like this is for some sort of retainer clip to fasten the padding. No retainer on mine and no impression of such in the rubber backing.

    Waterīs dripping from that small hole. Padding is soaked now of course. Poked a wire inside and expected it to show me the leak in the cowl area. But to my surprise the wire never came up out in the cowl area.

    What is this? A mysterious compartment under the windshield insisde the cowl? And where can it leak from in there?

    I had a similar issue on my 84 F250 but it was the cowl to firewall caulk that was cracked. Canīt see no such thing here on the Town Car.

  2. #2


    Are all your box panthers leak free?? Canīt believe it.

    Any idea on how to find that leak without taking off the hood and pulling the entire dashboard?

  3. #3
    2 decades of DDing Box Panthers, now in a Whale VicCrownVic's Avatar
    Join Date
    Nov 2012
    Shelby Township, MI


    Mine are certainly not leak free, but I've never came across a leak in that area. On mine it has always been the seal for the windshield usually on or near the top around the A-pillar.
    As you were thinking, sticking the wire through should have emerged on the engine bay side. Is that around the windshield wiper motor area? Perhaps removing all of that might help find where that hole emerges on the engine bay side. Although I'm not certain if that is the right area.
    If that is the right area, I have some not very good pictures of the clip that holds the wiper linkage to the motor for reference here: http://www.grandmarq.net/vb/showthre...l=1#post835354

    ~ 1998 Mercury Grand Marquis LS - new DD
    ~ 1991 Mercury Grand Marquis LS "The Scab" - plenty of rot, backup/summer cruiser
    ~ 1997 GMC Yukon SLT - wannabe winter DD - many issues, returning sometime in the 2020s
    ~ 1991 Mercury Grand Marquis GS "The Ice Car" - Rotting Retired Winter DD
    ~ 1989 Mercury Grand Marquis GS - Rotting Retired DD
    Gone but not forgotten:
    ~ 1988 Country Squire ~ 1987 Ford Crown Vic

  4. #4
    all the CFI are belong to me
    Join Date
    Feb 2014
    Windsor, ON, Canada


    My Lincoln and wagon both have water leaks up behind the dash that I haven't been able to trace yet. Can't offer any help as to the source yet, but I definitely have water problems too.

    Current driver: 85 CS
    Currently owned, parked: 83 GM 2dr POTM 10/2019 | 84 TC POTM 1/2017 & 4/2019 | 85 Ranger +trlr | 86 GM | 88 TC | 91 GM POTM 12/2017
    Gone: 97 CV | 83 TC

  5. #5
    GMN Regular WagonMan's Avatar
    Join Date
    Sep 2004
    Bridgewater Ct.


    I would start by checking the the drain "flap" below the wiper motor. If that is clogged the water accumulates in the plastic covers and works its way into the cabin. WagonMan
    1990 Colony Park
    1970 HEMI Superbird

  6. #6
    I'm an air-conditioned gypsy gadget73's Avatar
    Join Date
    Jan 2005


    Mine has lived in the garage for years at this point, but I don't have any memory of water leaks from under the dash.

    The wiper box does accumulate a lot of trash though, so does the air intake box for the HVAC over on the passenger side.

    86 Lincoln Town Car (Galactica).
    5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

    91 Lincoln Mark VII LSC SE, triple black (Timewarp) - poly front bushings, KYB struts and shocks, Holley SystemMax1 lower intake, SilverFox AOD valve body,

    1984 Lincoln Continental TurboDiesel - rolls coal

    Quote Originally Posted by phayzer5 View Post
    I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

  7. #7
    Wagon Addicted Tiggie's Avatar
    Join Date
    Mar 2006
    Bedford, VA


    Both of mine leak under the dash. I've searched but stopped short of pulling the dash. No findings to report.
    1990 Country Squire - weekend cruiser, next project
    1988 Crown Vic LTD Wagon - waiting in the wings

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