Water leak

[87GMQ]

87 grand marquis water leak onto drivers floor.
Laying under the dash I can see it coming from above the steering column. So far I siliconed around the hood release cable grommet, resealed the wiper cowl gaskets, and still has water coming in, maybe its the windshield? not sure, any ideas?

[87GMQ]

Normally, I start with the hose at the lowest point of what I think is the entry point of water and work my way up and have someone in the car watching, but I am unable to pinpoint it, so if anyone has an idea let me know

[gadget73]

this might be a long shot but the screws that hold the pieces of the wiper linkage where the arms clip on to the car. I don't remember if those go through into the firewall or not, but maybe worth a look there? The driver's side one is just below the edge of the windshield and almost directly above the column.

[87GMQ]

Good idea, i'll try that once the rain stops.

[friskyfrankie]

I would seriously check the area between the trim and the windshield. I've done that on my friend's '96 CV and it stopped all the water on the driver's floor!

[Mainemantom]

Yes check the trim around the windshield and at the bottom. Did you check the drain holes ?

[87GMQ]

Tried a few things, but the water entry is still occuring. The under dash carpet is soaked and the carpet.

Anyone have a write up on dash removal?

I think thats the best way to find the leak, pull the dash forward and have someone spray it with the hose for me and watch for the entry point(s).

[sly]

Heater core write-up covers dash removal for replacing the heater core.

http://www.grandmarq.net/vb/forum/technical/box-tech/electrical-and-wiring-hvac-vacuum-cfi/36506-heater-core-write-up