Question about 1994 Toyota Land Cruiser

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Coolant leaking at back of engine,could it be the heater core

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Most likely the heater core in passenger compartment.
The coolant is leaking out of the drain tube that is meant for removing the condensed humidity from the passenger compartmant (you knew that).
Bypass the heater core until you replace it. Connect the two heater hoses back to back with a 5/8 inch coupler (like a garden hose repair).

Posted on Sep 30, 2009

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The heater core leaks inside the car, it is either a hose or a core plug.

Posted on Sep 30, 2009

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  • Expert
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No, the heater core is in the passenger cabin, behind the dash. could be one of the hoses going to the heater core through the firewall though...or just about anything else

Posted on Sep 30, 2009

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Posted on Jan 02, 2017

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SOURCE: The Heater core is leaking on my 1998 RAV 4. Has

You do in fact have to take most of the dash board off. Actually it's not that drastic but you do have to take the glove box out and possibly the center console of the dash. Then you can get to it. Not easy, but not too hard. Lots of screws is all.

Posted on Jul 03, 2009

tragedy lok
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SOURCE: Coolant leak of the pipe leading to the heater.

PIPE OR HOSE,IF HOSE YES EASY FIX CAN EASILY BE REROUTED

Posted on Jul 10, 2009

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2 Answers

I have a 1997 bmw 318i that is overheating. Steam comes from back of engine compartment and the fan is not engaging. What could the problem be?


It is likely that the heater core has sprung a leak, or the hoses leading to the heater core have failed. This would cause a loss of coolant that would make the coolant temperature sensor think it wasn't necessary to turn the fan on, and would cause steam to appear to rise out of the back of the engine. If you turn the heater on inside the passenger compartment and get steam through the vents, it's DEFINITELY a heater core breach. Otherwise, check the hoses leading to the heater core and make sure they are still connected and not leaking. Good luck!

May 25, 2014 | 1997 BMW 318

1 Answer

Heater core


May not be heater core, sounds like leaking water into car from some other source.Low coolant could be engine gasket related Check for coolant leaks in engine compartment & under car.
Also check for water leak at winshield before replacing heater core.

Nov 30, 2013 | 2008 Pontiac G6

1 Answer

If heater core is leaking coolant will this cause engine to over heat?


Yes it can, the coolant leaks from the heater core, and causes the engine to lose coolant. The sad part is, if your heater core in underneath your dashboard, you will have coolant in the floorboard.

May 22, 2012 | 2007 Pontiac Grand Prix

2 Answers

Water leaking onto passenger side floorboard,soaking the carpet


Your heater core has developed a leak - the wetness on the passenger side carpet is engine coolant
from a heater core leak, or a leak in one of the two hoses connected to the back of the heater core.
Your strategy: disassemble dash down to heater core, determine whether you'll need a new heater
core or new hose (or new hose clamp), then replace the offending part.

Jul 20, 2011 | 2005 Chrysler Town & Country

1 Answer

Truck is blowing vapors out of heating vents...fogs inside of truck


This is usually a sign of a heater core that has a leak. check for low coolant level in your radiator. there is a condensate drain for the blower box, see if coolant is dripping from the drain under the truck. To make a temporary repair, after confirming leaking heater core, loop one of the heater core hoses back to the engine, bypassing the heater core. I say after confirming because the heater core hose nipples break easily when removing hoses. The smell in the cab would be a sweet smell from leaking coolant.

On a very humid day fog can be seen coming out of vents when using the AC. This would be a normal condition.

Nov 03, 2010 | 1999 Dodge Durango

2 Answers

Smoke coming from a/c vents on ford expedition with sweet smell


The problem is the heater core leaking behind the dashboard. Heater Core Removal & Installation 1997-2002 To Remove:
NOTE: Heater core must be vacuum leak tested before it is remove from vehicle if a heater core leak is suspected.
  1. Drain engine coolant.
  2. Remove instrument panel.
  3. For 5.4L (4V), if quipped, remove junction splash shield.
  4. For 5.4L (4V), if quipped, disconnect starter relay cable. ford-03-00-3579.gif

  5. For 5.4L (4V), if quipped, remove junction block bracket.
  6. Clamp inlet and outlet heater hoses.
  7. Disconnect heater hose from heater core by gently pressing it toward heater core.
  8. Remove A/C plenum demister adapter.
  9. Disconnect vacuum line.
  10. Remove 13 plenum chamber top screws.
  11. Remove blend door assembly from case.
  12. Remove heater core.
To Install:
NOTE: If needed, clean and lubricate coolant hoses with plain water.
ford-10-00-3098.gif

  1. Install heater core.
  2. Install blend door assembly to case.
  3. Install 13 plenum chamber top screws.
  4. Connect vacuum line.
  5. Install A/C plenum demister adapter.
  6. Connect heater hose to heater core.
  7. Release all clamps from inlet and outlet heater hoses.
  8. For 5.4L (4V), if quipped, install junction block bracket.
  9. For 5.4L (4V), if quipped, connect starter relay cable.
  10. For 5.4L (4V), if quipped, install junction splash shield.
  11. Install instrument panel.
  12. Refill engine coolant.
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Aug 17, 2010 | 1999 Ford Expedition

1 Answer

Heater takes to long to get hot and water is dripping form dashboaerd on passenger side i have a 2000 grand jeep cherokee


Sounds like one of two things are happening. Either the hose going to the heater core (on the engine side of the dash) is leaking causing coolant to spray into the passenger compartment or your heater core is leaking which is causing the dripping from the passenger side of the dash. This would also cause a loss of coolant in the engine which would cause the engine to overheat and not enough coolant to get to the heater core to supply heat to the passenger compartment. Check your coolant level (while engine is cold) and refill it with a 50/50 mix of coolant and water after you tighten the leaking hose or replace the heater core.Then start the engine and let it warm up to operating temperature. Again let it cool down and then top off the radiator with the 50/50 mix of coolant. Do not under any circumstances open the radiator cap while the engine is hot.

Nov 16, 2009 | 1999 Chevrolet Cavalier

4 Answers

I get a smell of antifreeze when I put the outside


Firsdt check the radiator cap thats it tight , then check for any anti freeze visible on the engine, then check under the car for any leaks. Is the smell of anti freeze inside the car ? , check the heater core you may have a leak there. the newer heater cores are aluminum and certain anti freezes, are extra acidic , which causes the anti freeze to eat at the heater core causing leaks, it maybe be a pin hole leak in the heater core ,causing the smell.

Jul 12, 2009 | 2000 Chevrolet Blazer

1 Answer

Where is the heater core hose in my 2000 ford expedition?


check closer to just underneath the firewall--it could be a smaller problem than a heater core--Ford 4.6--5.4 engines have a tube just underneath the intake manifold that the rubber hose goes bad and it will leak towards the back of the engine.Lets hope so-what i hear its very expensive to change a heater core in an Expedition.

May 01, 2009 | 2000 Ford Expedition

2 Answers

Car leaking coolant


First of all ensure that your car is leaking coolant fluid, and what is dripping is not just water condensation from the air conditioner.
If you have a coolant liquid leak, it can be from one of the ducts leading to radiator , from water pump or radiator itself. Check liquid levels, and if you have a leak have the car inspected by a qualified mechanic.
A broken water pump, for example, can cause your motor to blow in few miles.


Jun 08, 2008 | 1997 Cadillac Catera

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