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Coily-water leaking into passenger floor.
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Author:  HarryHoudini [ Mon Jan 27, 2014 8:33 pm ]
Post subject:  Coily-water leaking into passenger floor.

I've done a search and was in the process of boring a hole to try and clean out heater core as water is pouring in from behind glove box when it rains.I noticed a square plastic box on side of heater(top of passengers feet) that looks like it has clips and was wondering what it is and if there's a filter inside?.Any help would be appreciated as i can't find drain tubes either. TIA

Author:  Wazz [ Mon Jan 27, 2014 11:39 pm ]
Post subject:  Re: Coily-water leaking into passenger floor.

Im doubting it has a pollen filter .

In the case of leaf sprung sierras the drains are in the engine bay on the firewall . Put your finger up these and feel for crap blocking them up.

Author:  Marko_SJ [ Mon Jan 27, 2014 11:53 pm ]
Post subject:  Re: Coily-water leaking into passenger floor.

HarryHoudini wrote:
I've done a search and was in the process of boring a hole to try and clean out heater core as water is pouring in from behind glove box when it rains.I noticed a square plastic box on side of heater(top of passengers feet) that looks like it has clips and was wondering what it is and if there's a filter inside?.Any help would be appreciated as i can't find drain tubes either. TIA


Square plastic box with clips on it, above passengers feet. In my leafy this is the A/C.


Wazz wrote:
Im doubting it has a pollen filter .

In the case of leaf sprung sierras the drains are in the engine bay on the firewall . Put your finger up these and feel for crap blocking them up.


This.

Although mine still leaks after cleaning them, most people resort to plating this up.

Author:  1DYX [ Tue Jan 28, 2014 7:30 am ]
Post subject:  Re: Coily-water leaking into passenger floor.

Take the grill below the windscreen off, and remove the tray. Check for cracks etc?

Author:  Reubs [ Tue Jan 28, 2014 11:18 am ]
Post subject:  Re: Coily-water leaking into passenger floor.

1DYX wrote:
Take the grill below the windscreen off, and remove the tray. Check for cracks etc?

Yes, take that gill off (just a few push-in clips holding it in), but no need to remove anything else and get a garden hose and clean out the drain flap which drains excess water into the engine bay.

I have found the drain flap gets a bit 'sticky' and doesn't drain at all after being clogged with dust, henceforth water running onto the passenger floor after a highspeed r/h corner.

Author:  Marko_SJ [ Tue Jan 28, 2014 12:15 pm ]
Post subject:  Re: Coily-water leaking into passenger floor.

Reubs wrote:
1DYX wrote:
Take the grill below the windscreen off, and remove the tray. Check for cracks etc?

Yes, take that gill off (just a few push-in clips holding it in), but no need to remove anything else and get a garden hose and clean out the drain flap which drains excess water into the engine bay.

I have found the drain flap gets a bit 'sticky' and doesn't drain at all after being clogged with dust, henceforth water running onto the passenger floor after a highspeed r/h corner.


Same goes for a leafy?

Author:  HarryHoudini [ Tue Jan 28, 2014 1:27 pm ]
Post subject:  Re: Coily-water leaking into passenger floor.

Thanks for all the replies,i'll give it a go before boring holes as the heater still works.

Car doesn't have Air,it looks like a square box with clips but will try & take a photo.

Author:  Reubs [ Tue Jan 28, 2014 1:34 pm ]
Post subject:  Re: Coily-water leaking into passenger floor.

The_Amateur wrote:
Reubs wrote:
1DYX wrote:
Take the grill below the windscreen off, and remove the tray. Check for cracks etc?

Yes, take that gill off (just a few push-in clips holding it in), but no need to remove anything else and get a garden hose and clean out the drain flap which drains excess water into the engine bay.

I have found the drain flap gets a bit 'sticky' and doesn't drain at all after being clogged with dust, henceforth water running onto the passenger floor after a highspeed r/h corner.


Same goes for a leafy?

I don't remember a leaf Sierra having removable plastic clips, but same principle. I'm pretty sure on my Stepfathers Sierra we just used forced water from a hose into the grill beneath the windscreen to clear it out.

Author:  Wazz [ Tue Jan 28, 2014 1:52 pm ]
Post subject:  Re: Coily-water leaking into passenger floor.

Tin top leafy definetly doesnt have a removable grille below windscreen.

I took my heater box apart and cleaned it out properly and replaced all the foam seals.

Author:  Marko_SJ [ Tue Jan 28, 2014 5:25 pm ]
Post subject:  Re: Coily-water leaking into passenger floor.

Oh, I thought you were meaning to take the dash apart from the inside.

Nothing unbolts from the outside thats for sure.

Author:  Bozy97 [ Tue Jan 28, 2014 7:37 pm ]
Post subject:  Re: Coily-water leaking into passenger floor.

had same problem. the black grill under windscreen, take that off and fell for gunk and shit in there. clean it out = problem solved

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