2nd Gen Non-Engine/Transmission Water on the floor

[WMonroe]

I was cleaning the interior of my truck last night when I saw that when I pushed on the floor right by the passenger door a little bit of water came. So I took the plastic trim piece off that holds the edge of the plastic floor mat down (I have the black plastic floor not the carpet) and the insulation under the floor was soaking wet . I went around and checked the drivers side but it seemed to be dry. I did have the passenger seat out about three weeks ago. Did I maybe not get the bolt holes sealed well enough when I put the seat back in? I used a generous amount of clear silicone caulking and then put the seat back in and ran the bolts in. Or is my problem somewhere else?

I have never hosed the truck out, but usually just wipe the floor with a wet rag. I really want to figure this out. I don't like the idea of my floor being wet all the time.

Thanks for any help.

 

[TowPro]

Assuming you have AC, Somewhere under the hood, on the PS is a drain for your AC evaporator. Its probably clogged with dirt, causing the condensation collected from the AC to drain down onto the passanger side floor.



I am not sure where this drain is, I don't get to look at my truck often enough, it just sits in the driveway. (for looks)

 

[Oil Burner]

Have you had a heavy rain. Sometimes when it rains very heavy I get some water in through a vent or something. Not a whole lot but is does get in.

-Jason

 

[Tom W]

There are two most likely causes. One is a leaking third brake light.

The other, which I experienced, is water blowing back into the A/C drain. The drain extends horizontally from the firewall and the fix is to attach a length of hose to the drain and point it downward.

Tom

 

[mikel]

My truck did this. The drain on the firewall was not plugged up. What was happening was that as the water drained out of the A/C unit it would run right back in the cab around the gasket that is supposed to seal the A/C unit to the firewall on the inside.



I fixed my problem (finally) by clamping a piece of 5/8 radiator hose on the fitting at the firewall and attaching the other end to the frame down by where the control arm mounts. I used a piece of heater hose with a pre-made 90* bend.



I did this about 2 months ago and am still waiting for the mat under the carpet to dry out. I can't have the truck down long enough to pull the interior and let it air dry so I hope it eventually dries out.



Good luck,

Mike

 

[Bill Lins]

Originally posted by mikel

I did this about 2 months ago and am still waiting for the mat under the carpet to dry out. I can't have the truck down long enough to pull the interior and let it air dry so I hope it eventually dries out.

It ain't gonna happen, Mike. What WILL happen is that the wet padding will cause the floor to rust. Pull the carpet back & REMOVE the old wet padding & throw it away. After the floor & carpet are dry, get some new padding & install it.

 

[Jeff H]

Is it yellow.

 

[Mike Ellis]

Strangely enough, I discovered the same situation in my truck on the way to Colorado this week. On the same trip my tape player quit working so I was pretty



I was able to verify quickly that the evaporator was not draining outside right, only a few drops hitting pavement in hot hot weather. Couldn't get anything unplugged with careful probing, so I tried the "pour Lysol cleaner and water in the intake" routine. Results: Nada.



I am going to try blowing air into it tomorrow and see if I can loosen up the clog, sure hate to have to take that whole dash apart to get to the miserable POS.

 

[ecv2001]

I can assure you this is a plugged condensate drain. A paper clip or coat hanger can get this cleared.

It is a small oriface on passenger side firewall area in engine compartment.

Climb under the truck and start looking for a small plastic looking tube not much in diameter and stick the wire up there and look out it holds what seems like 6 gallons of water in there and will get you wet.

Good luck.

jim c

 

[Mike Ellis]

firemanemt,



Will a straight wire do the trick, or do you have to angle it upwards at the rear of the tube? I was probing around with a small screwdriver and it felt like there was a wall at the end of the tube, maybe 2" in. I didn't want to accidentally put a hole in the evaporator so I was using a delicate touch...



Mike

 

[WMonroe]

I too have what felt like a wall at the end of the tube. I didn't find any clog and only had a few drops of water come out when I pulled the screwdriver out.

 

[pwknapp]

The drain tube is right below the AC dryer on a 96. Attach about 2-3 ft of heater hose and secure to the frame going back towards the rear. Now hook up a wet vac to that hose. On the bottom side of the evaporator in the cab there is a switch plate held on by 3-4 phillips screws. Remove this switch for access. Place plastic sheeting on the floor so it drains out the door. Grab a hose and spray the evaporator while running the wet vac. I even spray it down with Cascade to get rid of the nasty smell on the evaporator. First time mine dumped about a gallon on the carpet and then I sucked out almost a gallon of sludge and leaves.



JM02



Paul

 

[MCummings]

Be sure to check the CHSML before you go through to much trouble with the A/C Drain.



Merrick Cummings Jr

 

[ecv2001]

You got me, I just used a paper clip and it took a couple of times and i cleared the blockage. To me it seemed that it was near the bottom of the drain.

You may need to do it a couple of times.

Other wise you may have some other type problem.

I just cant think of anything else it can be.

I know when working it drains alot of condensate. everywhere i park there is a puddle under my truck.

jim c