Question about 1992 Pontiac Grand Am

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Hose going in to the heater leakes right at the firewall. I replaced the hose and it still leakes.What could be wrong? can i get too it from the inside?

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Your hose should connect to one of the nipples for the heater core. Some times these are brass, so be careful. Look it over for corrosion build up, or even a crack. The heater core is similar to a small radiator, and is almost always very tough to get at.

Posted on Jul 07, 2010

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My 1998 Crown Victoria had steamed the passenger side windshield, digital thermostat never indicated that the engine was hot, i smell antifreeze, water leaking inside passenger side by glove box and a


It sure sounds like the heater core, especially if you have water leaking inside the cabin. The two heater hoses only go from the engine to the firewall, and do not go into or through the firewall. They connect to the heater core right at the firewall.
Check carefully around the back side of the engine and the heater hoses, though. If a freeze plug is leaking, water will be dripping off the bottom of the engine. If it is leaking before the firewall, that would not be the heater core.

Nov 20, 2013 | 1998 Ford Crown Victoria

1 Answer

1991 corsica coolant leaking out of by firewall


Let's hope the first fix is the right one!
You should have two heater hoses running from the engine to the heater core, which you cannot see under the hood.
Typically, the hoses are about 1 & 1/4 inch diameter, and black.
That part ( the heater core) is inside, under the dashboard, sort of behind the glove box.
The heater core is just on the other side of the firewall from the two hoses, which are usually "together" (means they are about an inch apart) where the hoses attach to the heater core through the firewall.
If the problem is coolant ( you can tell by the color and/or taste), you likely have a heater hose that is old and cracked and leaking.
Take a flashlight and look carefully, you should see sign of wetness around the ends of the heater hoses and maybe on the firewall.
Those hoses usually last about 10 years before needing replacement.
If you find one leaking, you should replace both of them, unless the other one has been changed recently.
If you change them, you'll need to drain the radiator coolant and the hoses and collect the coolant for reuse or disposal.
I would also put on new stainless-steel band clamps.
Remember when you put it all back together, you will need to "burp" the air out by running the engine with the heater on full for about 10 minutes at a medium speed to get the water pump to pump accumulated air out.

Jan 13, 2013 | Chevrolet Corsica Cars & Trucks

4 Answers

My antifreeze is leaking and I am trying to find the leak. It also leaks from inside of my truck on the passenger side where their feet are.


Your heater core is leaking. Replacement of this part is a big job and should be done by a professional.

Jan 12, 2013 | Cars & Trucks

2 Answers

Water leaking at fire wall


It may be the drain for the ac check and see if it has antifreeze in whats leaking if not it is ac drain it supposed to drain when using the ac

Aug 11, 2012 | 2000 Dodge Durango

1 Answer

Water leak


Replace that hose. If it's a big hose, it must be one of your two radiator hoses. If it's a small hose (about 1 inch in diameter) it must be one of your two heater hoses, running from the firewall in back of engine to the engine. To replace hoses, drain your radiator before disconnecting hoses, or you will have coolant going everywhere. Good luck.

Jun 16, 2012 | 2004 Pontiac Grand Prix

1 Answer

Im leaking antifreeze from a pipe by the firewall what is that pipe is call, u have one side going to the water pump, and the other side going to the thermostate


this should be the heater core,is the pipe itsself bad or is it just the hose needing replaced?does heat work,is the passengers floorboard wet with coolant?could be the hose bad or the heater core bad,some cars have whats called a heater control valve right there at the firewall that the hoses hook up to,it could be bad,if hoses just hook up to two pipes sticking out of firewall,check hoses first,then look in passengers floor to see if its wet,heater core is inexspensive but costly to have replaced.

Jul 24, 2011 | 2001 Ford Taurus

1 Answer

I have a l shaped house on my firewall as soon as i poor coolant in the overflow tank it runs out of this house


A hose on the firewall is usually a connection to the heater core behind the firewall (which provides cabin heat when the heater is on). If the hose is leaking, it's a simple and inexpensive procedure to replace it. If the leak is coming from BEHIND the firewall, the heater core probably has a leak and should be replaced.

Jul 06, 2011 | 1997 Pontiac Grand Am

2 Answers

Leaking antifreeze between firewall and motor on passenger side. just started when i tried to use the heater. could it be the heater core and where is it located


Could be the heater core, or where your heater hoses connect at the firewall. Heater core leak would more than likely put steam in the vents of you car when heater is on and hot and fan on. If the leak is just in the engine compartment, it`s a hose or a loose connection.

Apr 18, 2011 | 2002 Pontiac Montana

1 Answer

97 f150 noticed it leaking from a little tube on


if it is just the rubber hose going in, the rubber hose can be replaced. if the aluminum tube coming out of the firewall is leaking, it it part of the heater core, and the whole core will need to be replaced. good luck!

Mar 25, 2010 | 1997 Ford F150 Regular Cab

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