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A connection to a black box next to the firewall of my 94 ls400. Broke and now there is steam coming out of the black hose that connects to the box

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Go to the dealer parts dept and ask to have a parts tech look at this part to id what it is and what you need to repair it. If you ask nice they will gladly help.

Posted on Oct 26, 2012

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Posted on Jan 02, 2017

  • 73 Answers

SOURCE: 2000 gmc sierra

ur gonna have to tear the dash apart to get to the heater core, once u access that u can take the pastic housing off and reconnect the hoses

Posted on Oct 27, 2008

  • 1348 Answers

SOURCE: bad leak from little 2 inch L shaped hose next to lower firewall

its either the hose,or the heater core.
the core can crack where the pipes meet the core and
if you can smell antifreeze in the car and the windshield fogs,it is the core....the hose can also crack on the inside of the firewall and get misdiagnosed as a heater core.
big job,the dash has to come out

Posted on May 14, 2009

jturcotte
  • 8193 Answers

SOURCE: Where is the fuse box on the 94 Lexus LS400

Hi, there should be a box above the driver's feet to the left of the steering column.

Posted on Feb 14, 2011

  • 1252 Answers

SOURCE: Bought heater core replacement for

It should of came with a rubber pug (cap) with clamp....just cap it off....

Posted on Jun 05, 2011

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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

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I have white smoke/steam coming from my air vents and antifreeze leaking from a spout in my firewall. Any ideas/solutions?


Your heater core is leaking steamed antifreeze into the vents and possible out the firewall,where the heater hoses connect to it. Have that checked out.

Mar 14, 2013 | 1995 Jeep Wrangler

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I have a vacuum hose sucking air on the passenger side of the truck and i dont see where it it goes


I have a 94 ram. I just replace a few lines today. There are too lines that are right next to the valve cover close to the injectors. The lower one goes to the pcv. The other connects to a line coming out of the throttle body and then to a check valve that splits into two lines one goes to firewall the other to the other line just above to one that goes to the pcv. Good luck

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94 - 850 non turbo starts and runs okay but after awhile fule starts leaking around the front of car close to or maybe past the firewall where could this possibly be coming from ?


If I'm not mistaken, right about at firewall is a rubber hose that connects steel fuel line coming from tank to steel line to engine. Check there for your leak.

Mar 03, 2011 | 1994 Volvo 850

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How difficult is it to replace the connections to the heater hoses? They broke off trying to disconnect the hoses from the firewall.


Do you mean the pipes that come through the fire wall broke off? Those are part of the heating core. You must replace the heating core.

Jun 30, 2010 | 1997 Cadillac DeVille

1 Answer

Hose broke off the firewall need to know how to get it off to replace.. it has a white thing that was attached to the firewall it broke off in the hose we cant get the piece off the firewall to replace


When you say hose - is it a large water type hose? The hoses that connect near the firewall would be heater hoses. Is there a piece stuck in the end of the hose that came off? That would indicate a damaged heater core and the only repair is to replace it from inside the vehicle.

If it is a smaller hose it could be vacuum tubing that operates equipment inside the cab. A white piece on that would indicate the vacuum port that the tube was connected to and that part would likely need to be replaced.

Dec 19, 2009 | 1999 Chevrolet Silverado 1500

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Front windsheild is steaming up


If you are talking about steaming up on the inside, you could have a heater core leaking coolant. Check the passenger side front carpet and see if it's wet. A big job to replace.

Mar 05, 2009 | 1998 Ford Expedition

1 Answer

Heater hose broke


there should be two bolts on the inside holding it into place or it could be your heater core that they belong to . I have seen them bolted to the inner fire wall .

Feb 02, 2009 | 1999 Chevrolet Silverado 1500

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