Question about 1992 Toyota Pickup

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Identify antifreeze leak behind engine; in front of firewall

How do you identify an antifreeze leak before heater core?

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  • mclizard1025 Mar 07, 2009

    I have a 22re (2.4L). It's located back, behind the engine near the firewall with two steel lines.

  • Toyota Guy
    Toyota Guy May 11, 2010

    Do you have a 22r(2.4L) or a 3.0v6?

    Which side of engine,drivers or passenger?or is the back bind the engine head?



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There is a coolent tube runing under the lower intake manifold it will leak or bust open it comes right out the back in the water delivery unit get you book and pull the upper manifold and you should be able to see the problem if it is pull the lower and repair the tube.

Posted on Mar 14, 2009


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My Expedition doesn't transfer ac to heat. .blower works fine , no leaks..slight smell of antifreeze but goes away very overheating just cold air blowing if as dial is set on heat/warm..Please...

LG, first you need to make sure coolant is circulating through the heater core. let the engine reach normal temperature, locate your heater hoses going to the heater core, they both will be near the middle of the firewall a little towards the passenger side of vehicle, be careful but touch both hoses and make sure they BOTH feel hot to the touch. If both do, then coolant is circulating through the core.

Next, you need to make sure the switch in the dash is working the blend door. The blend door is located right in front of the heater core, almost right behind the radio. If you take the little filler panel off at the bottom (depending on year model) you should see the blend door actuator, it should be white in color and has a set of wires (maybe 6-8) that all goes into 1 plug that plugs into it. With it hooked up and truck running as you turn the temp know from cold to hot you should be able to see the actuator turning the blend door rod.

It's not real easy to see, but if the actuator is turning and you have hot water/coolant circulating through your core, then you may have a broken blend door. The only way to fix it would be to go into the air box. Unless you have experience doing this type of work, I don't suggest you trying it. It is a complicated job/task to even get access to the blend door in the air box. Hope this helps you identify your problem.

Dec 10, 2013 | Cars & Trucks

2 Answers

Antifreeze in oil on 05 elantra

You have a blown engine cylinder head gasket most likely.

Jun 14, 2012 | 2005 Hyundai Elantra

1 Answer

My 1995 F250 is leaking radiator fluid under the engine behind the fan

Is antifreeze coming from "weep" hole in bottom of case under shaft nose?
is it coming from the heater hose (small hose coming of side and going into firewall to heater core inside engine compartment?
is it coming from bad gasket between pump and front case?

get a paper towel and dry these areas then start engine. when it starts leaking that will tell you if you need to change the water pump (gasket leak or weep hole shaftseal leak) or if you just need to replace/repair heater hose.

Apr 09, 2012 | 1995 Ford F250

2 Answers

97Z71 leaking antifreeze

I would check the heater core. You can rent a pressure tester from the auto
parts store and put a piece of cardboard under the vehicle, then pressurize
the system to the pressure on the cap. Come back in an hour or so and look
at the cardboard. (if your heater core is leaking it will come out through the
air conditioner drain on the passenger side.) This method will identify where the fluid
is coming from in terms of area on the vehicle. You may want to pressure wash the
engine a day before to make things more visible.

Also check to be sure that the
overflow tank hose is connected to the radiator, these can come off and allow
the radiator fluid to escape the vehicle instead of being transferred back and
forth between the radiator and overflow tank as mine did. I didn't even notice as it
had fallen down behind the battery.
Hope this helps.

Mar 11, 2011 | Chevrolet 1500 Cars & Trucks

1 Answer

Can you tell me where to find my heatercore hoses on my 1994 cadillac sedan deville?

The heater-core hoses are usually paired together behind the engine, and they go through the firewall. Two rubber covers usually hold them tightly to the firewall. They are not that dificult to identify.
If your heater still works, they get quite hot, and you could feel them to further identify.

Dec 21, 2009 | 1994 Cadillac DeVille

1 Answer

I have a 2005 toyota camry.Leaking antifreeze on drivers left hand side. Mechanics took apart dash did presure tests etc. and can't find leak? Any suggestions?

The only antifreeze that goes into your car is two hoses (one in, one out of firewall, behind engine) that connect to what looks like a mini radiator. This is called the heater core. Usually this leaks to the passenger side, however it simply has to be your heater core leaking. Tell them to connect those two hoses together instead of running them into fire wall, and if the problem stops, which it will, to replace the heater core. How big is the leak by the way?

Dec 14, 2009 | 1992 Toyota Camry V6

1 Answer

1992 lumina smokes out of heater, consumes more gas

your heater core has probably sprung a leak.does the smoke smell kinda sweet?....check the floor in the front where the floor mats are for moisture or even puddles of antifreeze.(the replacement of a heater core can be very expensive as the entire dash usually needs to be removed to access the heater core)also look under the engine near the firewall for antifreeze drips.

Dec 29, 2008 | 1992 Chevrolet Lumina

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