Water leaking into floorboard of passenger side

[Virginia]

The water is coming in at the bottom of the heater fan housing down into the passenger floorboard

to the point of several inches if it's a really hard rain.  I was told that if you take the wipers off and 

take that mesh cover off I would find a weep hole that has become clogged.  So, I did.  

 

If there's a weep hole in that space, I sure as hell can't find it and can't see how water would get

from that trough down to that rubber seal around the heater blower.  I'm considering drilling a hold just below the fan housing

but am not certain that it would come out on the engine side of the firewall.

 

Any other suggestions?

[Warren Mohler]

don't drill holes

[Virginia]

8 minutes ago, Warren Mohler said:

don't drill holes

OK.  How do I stop the leak?

 

[Warren Mohler]

1 minute ago, Virginia said:

OK.  How do I stop the leak?

 

gotta find it first. On a dry day put garden hose in wiper well and fill an inch or so and see if it comes in, leaks can be a b...h

[MiNi Beast]

Check inner fender area. Remove liner if still have it intact. Blow some air to clean out any mess. Windshield seal leaking? Heatercore leak? Spit ball ideas

[fiatslug87]

You said it's coming from below the blower fan but also make sure the antenna wire plug is in place behind the passenger kick panel.

[SVPete]

The cowl drain locations are in the below link.

 

viewtopic.php?f=2&t=9741

 

Also have seen a comment about hood hinge seals, door weatherstripping, and the seal above the triangle window on the door frame.

[armcallister]

Make sure the AC condensate drain is open.  I was getting water in that area, thinking I had a leak, but ended up was actually a plugged drain.

[Deleted]

This thread has been helpful, I have the exact same problem and usually solved it by putting a rag on the floor so it didn't pool up on rainy days or at the car wash lol. AC condensate drain was the ticket for me

[Virginia]

On 11/21/2019 at 1:07 PM, armcallister said:

Make sure the AC condensate drain is open.  I was getting water in that area, thinking I had a leak, but ended up was actually a plugged drain.

Where is that drain?  I might agree with that except I can see where it's running down the motor side of my firewall

and pooling right below the fan motor then getting behind the gasket and into the passenger

foot well.

[Virginia]

Can I get a replacement rear hood lid gasket?

 

[JMO413]

This is the replacement part for the rear hood seal.

 

https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.amazon.com/Precision-6110-Hood-Cowl-55235178AB/dp/B07VS9243M&ved=2ahUKEwjmnrj_oITmAhXM6Z4KHZr6CNgQFjACegQIARAB&usg=AOvVaw3kSwDQ3dwnsA7mDWjAFDSe

 

[Virginia]

9 minutes ago, JMO413 said:

This is the replacement part for the rear hood seal.

 

https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.amazon.com/Precision-6110-Hood-Cowl-55235178AB/dp/B07VS9243M&ved=2ahUKEwjmnrj_oITmAhXM6Z4KHZr6CNgQFjACegQIARAB&usg=AOvVaw3kSwDQ3dwnsA7mDWjAFDSe

 

Thanks!  I ordered it.

[JMO413]

2 minutes ago, Virginia said:

Thanks!  I ordered it.

Welcome hope it helps. Mine still leaks a little if it out right Poor's. It helped allot.

[Virginia]

16 minutes ago, JMO413 said:

Welcome hope it helps. Mine still leaks a little if it out right Poor's. It helped allot.

I'll keep you posted

[armcallister]

Virginia, on my 87, 4.0 Renix it is located near the bottom of the evaporative emissions canister.  Looking up from underneath,  the end looks like a sort of "pinch valve" and appears to me about 3/4" diameter.  Might be different on your 91, but you should be able to find it from underneath in approximately the same position.  Use a stiff wire (i.e. coat hanger) to rod it out.

[Virginia]

Thanks! Will look this afternoon. 

[Virginia]

On 11/24/2019 at 8:12 PM, JMO413 said:

Welcome hope it helps. Mine still leaks a little if it out right Poor's. It helped allot.

I installed the gasket 2 days ago. We've had 2 days of pretty hard rain and so far, no leak. 

[JMO413]

13 minutes ago, Virginia said:

I installed the gasket 2 days ago. We've had 2 days of pretty hard rain and so far, no leak. 

Good to hear!

[Virginia]

On 11/30/2019 at 6:54 PM, JMO413 said:

Good to hear!

Sadness....had some rain this past week and there is still a

leak. Nothing like it was but there was about a pint of water on the passenger side.  

I see where it's entering the engine compartment and running down the firewall

to the inset where the blower motor is.  I'm thinking of using silicone

caulk to make something like a roof gutter to divert the water

away from that blower motor opening.

[Airborne Janitor]

Hey Virginia I just stumbled on this topic, I know it's a few months old. My MJ has 2 small water leaks that end up with water in the passenger floorboard. One is the seal for the rear glass, right in the bottom corner on the passenger side, theres a small trickle that will come down from the seal, down the interior of the cab, then to the floor. The 2nd leak came from where the blower motor seals to the firewall. There was a bit of seam sealer that was interfering with the proper seal. I used a dremel to grind it down, then used some silicone to seal it back up. My 98 XJ leaks here too fyi.

[Virginia]

On 2/14/2020 at 7:29 PM, Airborne Janitor said:

Hey Virginia I just stumbled on this topic, I know it's a few months old. My MJ has 2 small water leaks that end up with water in the passenger floorboard. One is the seal for the rear glass, right in the bottom corner on the passenger side, theres a small trickle that will come down from the seal, down the interior of the cab, then to the floor. The 2nd leak came from where the blower motor seals to the firewall. There was a bit of seam sealer that was interfering with the proper seal. I used a dremel to grind it down, then used some silicone to seal it back up. My 98 XJ leaks here too fyi.

 

What did you grind down and where did you put the silicone?

[Andy in Pa]

3 hours ago, Virginia said:

 

What did you grind down and where did you put the silicone?

Looks to me like he ground down the seam sealer (just a caulk material) that was preventing the blower motor from mounting flat to the fire wall, then used silicone to re-install and seal up around the blower motor.  I am having a similar leak at the bottom of my blower motor, and just plan to put silicone in the bottom edge of the opening where it mounts, from the outside. 

[Virginia]

23 minutes ago, Andy in Pa said:

Looks to me like he ground down the seam sealer (just a caulk material) that was preventing the blower motor from mounting flat to the fire wall, then used silicone to re-install and seal up around the blower motor.  I am having a similar leak at the bottom of my blower motor, and just plan to put silicone in the bottom edge of the opening where it mounts, from the outside. 

 

I'll  work on that when it stops raining.

 

[Airborne Janitor]

2 hours ago, Andy in Pa said:

Looks to me like he ground down the seam sealer (just a caulk material) that was preventing the blower motor from mounting flat to the fire wall, then used silicone to re-install and seal up around the blower motor.  I am having a similar leak at the bottom of my blower motor, and just plan to put silicone in the bottom edge of the opening where it mounts, from the outside. 

 

Correct. The picture shows the problem, not the solution. If you look in the picture you can see a faint white horizontal line where the bottom of the blower motor sat/sealed. In the bottom right you can see some of the brownish seam sealer where it would interfere with the blower motor seal. You can see traces of muddy water below it. I used a grinding stone on a dremel to dig it out, which revealed there is a section of overlapping sheet metal that will have to be "resealed". You're basically grinding out the protrusion of seam sealer, then resealing it as flat as possible with the rest of the firewall to have a clean fit of the blower motor seal.