2nd Gen Non-Engine/Transmission Water coming from floor vent

[widewheel]

I was going into Tulsa yesterday and had the AC set on the upper and lower setting. I had been on the road for about 30 minutes when I made a right hand turn and noticed water coming out of the passanger side floor vent. It kind of spewed a little after I made the turn but every time I made a right hand turn more would come out. I think that there is a drain for the evaporator that is probably plugged up. I looked under the truck but could not find it. Does anyone have any ideas? Thanks.



PS: It's been near 100 degrees for over two weeks and no rain so I don't think it is rainwater.

 

[MAllen1]

If you have a way to pressurize the radiator, do it and check the pressure to make sure it won't go down. The reason is the first thing I would check if it hadn't been raining is that the heater core may be leaking ( i'm hoping you have a plugged drain and you just got done washing it).

 

[B.G. Smith]

I thought the 2nd generation had a visible drain that stuck out just below the AC lines under the hood. If not you should see an indentatoin down there and the best/easiest way to unplug it is to hold an air gun near the opening and give it a little blast of air. I made up a short piece of 1/4" tubing about 2' long with a valve in the line and hooked it to the end of the air hose, bent a 90 in end of tubing and was able to do the job from the top side. bg

 

[BlameCandida]

I just worked on this problem myself, today. I had water coming into the passenger side floorboard for the past few weeks as I've had the AC on max. The source of this water is condensation from the evaporator which is not draining correctly. I did a few things to fix this problem.

1) In the engine bay, I pulled out the plastic housing for the air filter (secured to wheel well with 3 nuts) to gain access to the evaporator drain, located on the firewall. It's a 5/8" diameter spout sticking straight out. I got some 5/8" ID tubing and a hose clamp and extended the spout a few inches, so that water is not forced back into the spout.

2) I pulled off the glovebox door, and then dropped the blower motor. Three philips head screws hold it in place. With the blower motor out of the way, I reached up and to the left and pulled compacted mulch off the evaporator.

3) I put the blow gun attachment on my air compressor and inserted it into the tube i just put on the drain spout. I gave it a few blasts of air, which further loosened debris to be removed through the cab.

I had already removed my carpet for deep cleaning, and I noticed that the source for the water is the area on the floorboard where the drain spout exits the cab. I may put some sort of sealant around this.

This didn't take very long, maybe 3 hours with a lot of breaks (over 100F outside).

 

[Hammer]

This is also a deal that happens to a truck that has had the front end leveled with a leveling kit of springs.

 

[widewheel]

I just worked on this problem myself, today. I had water coming into the passenger side floorboard for the past few weeks as I've had the AC on max. The source of this water is condensation from the evaporator which is not draining correctly. I did a few things to fix this problem.



1) In the engine bay, I pulled out the plastic housing for the air filter (secured to wheel well with 3 nuts) to gain access to the evaporator drain, located on the firewall. It's a 5/8" diameter spout sticking straight out. I got some 5/8" ID tubing and a hose clamp and extended the spout a few inches, so that water is not forced back into the spout.



2) I pulled off the glovebox door, and then dropped the blower motor. Three philips head screws hold it in place. With the blower motor out of the way, I reached up and to the left and pulled compacted mulch off the evaporator.



3) I put the blow gun attachment on my air compressor and inserted it into the tube i just put on the drain spout. I gave it a few blasts of air, which further loosened debris to be removed through the cab.



I had already removed my carpet for deep cleaning, and I noticed that the source for the water is the area on the floorboard where the drain spout exits the cab. I may put some sort of sealant around this.



This didn't take very long, maybe 3 hours with a lot of breaks (over 100F outside).

Thanks for the information. I just went out and checked the drain located on the firewall behind the air cleaner. I took a short piece of bailing wire and gentley inserted it into the drain. It was like Niagra Falls. A fair amount of water flowed out of the drain hole. I think that I will pull the blower motor and check the evaporator. I put a new blower motor in a couple of months ago and I know that is not a big job. It will be worth it to check the evaporator. Thanks again.

 

[grimesja]

Another thing to consider is that you must have a drain hose attached to the outlet or the air pressure will not allow the water to drain at highway speeds. I lost my hose and my truck filled with water. Also, you may need to pull your carpet to allow it to dry. It takes about a week to drain and dry. It will never dry trapped in the truck. Just my experience.



V/R

John G.

 

[SHobbs]

Another thing to consider is that you must have a drain hose attached to the outlet or the air pressure will not allow the water to drain at highway speeds. I lost my hose and my truck filled with water. Also, you may need to pull your carpet to allow it to dry. It takes about a week to drain and dry. It will never dry trapped in the truck. Just my experience.



V/R

John G.

Not here in the south, just open the truck doors for an afternoon it will be nice and toasty.