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Replacing the heater core on my 1989 ford mustang 2.3L. On the heater core one tube is large then the other so which one is what. the top hose on the watr pump goes to which one. please help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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You should have two different size hoses also, usually the smaller one goes to the water pump

Posted on Sep 12, 2010


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Heater core

There's two hoses that run from the front of the engine to the firewall; those tubes sticking out through the firewall are your heater core connections. You'll have to pull the dash out to access the heater core for replacement; once you get the dash out you should be able to figure the rest out.

Aug 02, 2012 | 1989 Ford Mustang

1 Answer

No Heat The AC Compressor is running

Could be a clogged heater core. Take off both hoses at heater core and flush out the core when done fillup core with fluid and put back on hoses and bleed air out of system.

Jan 11, 2012 | 2000 Ford Mustang

1 Answer

Heater core removal 2000 mustang gt

The first thing your going to have to do is take it to a repair shop and have the air conditioning system discharged.Disconnect the battery and drain the cooling system.Disconnect the heater hoses at the firewall and also disconnect and plug the evaporator tubes at the firewall and also plug the heater core tubes so that you dont spill any coolant when you take it out.Cap the evaporator tubes so that you dont get any dirt or water in them.Next you want to remove the instrument panel.Then disconnect the main vacuum line from the heater/evaporater housing to the engine.This is located above the rear of the right valve cover.Then pull the hose through the firewall into the inside of the car.Remove the heater/evaporater housing screws which includes a bolt near the top center of the unit,a nut at the top righ,a bolt near the bottom,and a nut on the engine side of the firewal.Make sure that there are no other wires or hoses connected to the housing and then pull the heater/evaporater housing out from under the cowl and remove it from the vehicle.Take out the 4 screws and the heater core cover then you can take out the heater core.Be very carefull not to tear the foam sealing material.To install it reverse everything.hope that this will help a little.

Apr 10, 2011 | 2000 Ford Mustang

1 Answer

Antifreeze is leaking from a tee looking part that is on top of the motor it has two tubes coming out of it on tube goes to the back of the motor and the other goes to the radiator

This splitter is for the heater core and return. You can fix this. Remove the hoses, and unscrew the T. I'm not sure if the auto parts store will have one, check please( cause they are sooo much cheaper than the dealer) the dealer will have one. Wrap the end going back in the engine block with some plumbers tape, and screw back in. replace your hoses, and you are done.

Jan 14, 2011 | 2001 Ford Mustang

1 Answer

I have a 1989 ford bronco V6 the heater doesn't work, It works sometimes for just a minute and then goes back to cold. Help it has been 7 degrees when I take my kids to school and with no heat it feels...

chances are your core is the problem.

remove the two hoses that go through the firewall and flush water through them both to clean the core. My 70 mustang did the same thing and I flushed the core and it works fine now.

Dec 10, 2009 | 1989 Ford Bronco

2 Answers

I need to replace the heater core in my 1986 Ford Bronco 2. Are there instructions on line on how to do this?

under the dash on the pass side there is a large black plastic box. take out the 6 screws and pull off the cover. there is a wire attached to the top that controls a flap, that just lifts off. under the hood loosen and remove the 2 host clamps right at the firewall area. Push the metal tubes in to the firewall. Then reach back in from under the dash and pull out the old core. put the new one in reverse order.

Nov 16, 2009 | 1986 Ford Bronco

1 Answer

Blower Motor for 89 Mustang

i've replaced three heater cores on a mustang, the only way to get to them is to remove the dashboard i believe the only way to get to the blower motor is the same way, located behind the glove compartment.

Sep 02, 2008 | 1989 Ford Mustang

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