Question about 1991 Pontiac Bonneville

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Evaporator drain hose where does it exit from the body?

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Hi the hose comes through the firewall on the passenger side (look for the heat sheild) on the fire waal and you will see a small black rubber gromet, thats it (probably plugged up) Thanks. good luck

Posted on Jun 18, 2009


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1 Answer

Why is carpet damp or wet?

Sounds like the air conditioning evaporator/heater box has a blocked drain, when using a/c condensation will form on the evaporator, and should drain via hose externally...

The drain hose will run through the floor directly under where the a/c fan/evaporator box is located, you may have to remove some kick panels or part of dashboard to access the evaporator box to clean the drain hose....

Feb 13, 2016 | Cars & Trucks

1 Answer


The drain hose should be at the auxillary ,that means the rear,
  1. Remove the left rear quarter trim panel.

  1. Remove the auxiliary evaporator pipe clamp screw.
  2. Remove the auxiliary evaporator drain hose from the evaporator clamp.
  3. Remove the evaporator drain hose from the auxiliary evaporator housing

Aug 07, 2012 | Cars & Trucks

1 Answer

How to fix leakage of AC on passenger side of Toyota Yaris 2008

It sounds like the evaporator drain tube is blocked or came off the duct inside, pull the carpet back and locate the rubber drain hose on the bottom of the evaporator housing, the hose should go through the firewall so water can drain out, the hose may have become disconnected before the firewall or it come off at the evap housing, pull the hose of the evaporator if water comes out make sure the hose goes out through the firewall and is not clogged.

Jul 11, 2012 | 2008 Toyota Yaris Sedan

1 Answer

The drain line is plugged on my 2007 corolla lwhere is the drain hose?

What drain hose? If it is for the AC, in the engine compartment on the passenger side, the is a black plastic box on the firewall where the AC / heater blower fan is. At the bottom of this box is the drain hose. The box houses the AC evaporator and when the AC is running, water condenses on the evaporator and is drained through the hose.

Jul 04, 2011 | 2007 Toyota Corolla

1 Answer

Air-conditioning leaking inside car

  1. Air conditioner evaporator drain hose is blocked. Clear the drain hose where it exits the passenger compartment.
  2. Air conditioner evaporator drain hose is disconnected. Secure the drain hose to the evaporator drainage tray under the dashboard.

Apr 28, 2011 | 2005 Chrysler Town & Country

1 Answer

I have a 2003 honda civic ex 2 door. I have a rain leak on the drivers side by the gas/trunk lever. I keep reading it most likely is the sunroof drain. Where is the sunroof drain and how do I get to it to...

It may not be clogged. I believe the sunroof drains run down
the roof pillars and then connect to another hose which exits
through the body behind front fender. Unfortunately the hoses
connect inside the car. Then again this might not be the source
of your leak and water leaks are hard to address. Your dealer
might be your best bet. If the sunroof drains are clogged, Honda
knows entry and exit and they have to be unclogged with compressed

Jan 20, 2011 | 2003 Honda Civic

1 Answer

I have a 1998 Jeep Grand Cherokee 5.9 Limited and we have been experiencing a leak from the evaporator housing on the floor on the passenger side of the vehicle. I have tried blowing air through the 3/4"...

On most cars there is a drain on the driver's or passenger's side near the firewall. I would try to seal the leak where it goes into the passenger compartment witih expanding foam or silicon to see if the water will make its way to the slits in the body where water usually drains.

Has the car ever been sandblasted or painted so that the drains would be plugged up with sediment?

Jul 16, 2010 | 1998 Jeep Grand Cherokee

1 Answer

A/c drain pulgged, leaking inside of truck and into carpet

mcdevito75 here, Water drains from your A/C evaporator, as the hot air hits the cool evaporator thru a rubber hose connected to the evaporator and leading thru either the firewall or even under the vehivle. Locate tis hose thru the firewall, it won"t be attached to anything, do not un- attach any rubber hoses you see. If you do find this hose just comming thru the firewall, run a piece of coat hanger thru it to un-cog. If you can Locate this rubber hose at the bottom of the evaporator under the dash, real close to the glove box.

Apr 03, 2010 | 2004 GMC Envoy

2 Answers

Air conditioner drain is clogged

If it is truly a plugged drain... there is a hose that exits under the car near where your feet would be, but a little forward of that. it looks like a 1 inch hose sticking out with nowhere to go. gently poke a coat hanger into that, but not too far or too hard. You may damage the heater core or evaporator. If there is debris, you will see it on the hanger or you will dislodge it and the drain will be clear.

Apr 26, 2009 | 2005 Dodge Caravan

1 Answer

A/C drainage issue

Hi Jay!

The problem is condensation on the evaporator coil not being caught and drained to the outside. There is a catch-pan under the evaporator coil where condensate should collect, and from that catch pan there is a drain hose leading to underneath the floor pan where it should then drain to the ground.

If that hose has become disconnected, clogged, cracked or pulled from it's exit hole, that water will collect on your floor and cause the problem you have described.

I'd be disappointed in a mechanic who could not solve such a simple and common problem... and I'd be looking for a new one!!!

Hope this sheds some light on the issue and helps you get it resolved. Do not hesitate to ask if you have further questions or to post comments, let us know how it goes, and please be so kind as to rate my advice....

Thanks and good luck!

Jun 18, 2008 | 2003 Mitsubishi Eclipse Spyder

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