Question about 1993 Ford Aerostar Extended

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1993 Ford Aerostar - Replacing heater core

How do I replace the heater core? Where is the housing located on the engine?

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  • 240cpa May 11, 2010

    It is most likely under the dash. Most heater cores are found there and you will know when you look under the dash to find hoses coming in through the firewall. Hopefully it is fairly accessible.

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Inside on the passenger side under the dash you will find a large black box. It has several screws holding the cover on. You remove the core from there. It helps to take the jockey box out first. But, the hoses to the core are outside under the hood on the passenger side. These usually have C-hook clamps on them. That means you need a special tool to get the clamps off, then the hoses slide off the rubber gromet on the core from the outside, by simply pulling on them. You can find the two hoses on the far left when you are outside on the front of the vehicle. They project from a small are on the side of the heater fan housing. Remember to save the clamps, most new cores do not come with.

Posted on Jan 19, 2009

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1990 ford arostar heater core replacment


Under dash is a small unit that looks like a small radiator "inside" a case. Located under the dash on the passenger side.

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If it is necessary to remove the heater assembly, the cooling system must be drained before removing the heater core.
When a heater core leaks, a new heater core is installed or the old one repaired.
Heater Housing
  • The heater housing is usually under the dash and must be removed to gain access to the heater core.
  • Procedures for replacing the heater core vary with the year, make, and model of car. It threfore necessary to consult the manufacturer's repair manuals for the proper procedure for replacement.
f74-01.gif The heater housing is disassembled to get to the heater core. Heater Core
  • Remove the access panels(s) or the split heater/air conditioning case to gain acess to the heater core.
  • Remove the heater coolant hoses.
  • Remove the cable and/or vacuum control lines (if equipped).
  • Remove the heater core securing brackets and/or clamps.
  • Lift the core from the case. Do not use force. Take care not to damage the fins of the heater core when removing.
  • To reinstall the heater core, reverse the removal steps.
When the heater core leaks and must be repaired or replaced, it is a very difficult and time-consuming job primarily because of the core's location deep within the firewall of the car. For this reason always leak test a replacement heater core before installation.

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Where do the heater core hoses attach to engine on an 1988 f-250 with air


If it is necessary to remove the heater assembly, the cooling system must be drained before removing the heater core.
When a heater core leaks, a new heater core is installed or the old one repaired.
Heater Housing
  • The heater housing is usually under the dash and must be removed to gain access to the heater core.
  • Procedures for replacing the heater core vary with the year, make, and model of car. It threfore necessary to consult the manufacturer's repair manuals for the proper procedure for replacement.
f74-01.gif The heater housing is disassembled to get to the heater core. Heater Core
  • Remove the access panels(s) or the split heater/air conditioning case to gain acess to the heater core.
  • Remove the heater coolant hoses.
  • Remove the cable and/or vacuum control lines (if equipped).
  • Remove the heater core securing brackets and/or clamps.
  • Lift the core from the case. Do not use force. Take care not to damage the fins of the heater core when removing.
  • To reinstall the heater core, reverse the removal steps.
When the heater core leaks and must be repaired or replaced, it is a very difficult and time-consuming job primarily because of the core's location deep within the firewall of the car. For this reason always leak test a replacement heater core before installation.

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2000 windstar is leaking coolant behind motor and smells with ac on...Heater core?


Yes u have a leaking heater core, below fin d the instructions to replace it.
1997-2000 Ford Windstar 3.8
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Drain the cooling system

Heater Housing

The heater housing is usually under the dash and must be removed to gain access to the heater core. Procedures for replacing the heater core vary with the year, make, and model of car. It is therefore necessary to consult the manufacturer's repair manuals for the proper procedure for replacement.
The heater housing is disassembled to get to the heater core.
Heater Core Remove the access panels(s) or the split heater/air conditioning case to gain access to the heater core. Remove the heater coolant hoses. Remove the cable and/or vacuum control lines (if equipped). Remove the heater core securing brackets and/or clamps. Lift the core from the case. Do not use force. Take care not to damage the fins of the heater core when removing. To reinstall the heater core, reverse the removal steps. When the heater core leaks and must be repaired or replaced, it is a very difficult and time-consuming job primarily because of the core's location deep within the firewall of the car. For this reason always leak test a replacement heater core before installation.

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Working in the passenger compartment, remove the six screws attaching the heater core access cover to the plenum assembly. Remove the access cover.

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Heater core and case

Depress the retainer bracket at the top of the heater core and pull the heater core rearward and down, removing it from the plenum assembly.

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Answer
Once again you have an ALL DAY JOB ahead of you. YES, You have to remove the "whole dash".

However, Sometimes you can get LUCKY and only unbolt it without pulling all the wires and cables and junk and it will come back just far enough to be able to remove the heater box.

NOTE: I have found that on SOME Ford models.,:

They install the heater core in the interior plastic housing and mount it on the firewall with the studs protruding thru the firewall then they put on the NUTS from the engine compartment side onto the bolts to hold the assembly onto the firewall.

Then when they mount the engine compartment housing OVER these same studs that protrude thru the firewall and then they install a SECOND NUT to hold the firewall compartment on.

So you have 2 nuts on the same bolt. Therefore you have to take the engine compartment side housing side off FIRST and then you will see the set of NUTS that hold the interior housing onto the firewall,

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1 Answer

How to get to the thermostat on a ford aerostar 93 awd van?? where is it located??


1993 Ford Aerostar 4WD 4.0L MFI 6 Cyl Repair Guide

1. Drain the cooling system with the engine cold.

CAUTION When draining coolant, keep in mind that cats and dogs are attracted by ethylene glycol antifreeze, and are quite likely to drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantity. Always drain the coolant into a sealable container. Coolant should be reused unless it is contaminated or several years old.

2. Remove the retaining bolts for the thermostat housing. Lift the housing clear and remove the thermostat. It may be easier to clean the gasket mating surfaces with the heater and radiator hoses removed from the thermostat housing.


Exploded view of the thermostat housing on the 2.3L engine

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Exploded view of the water outlet housing and thermostat-make sure that the thermostat is correctly positioned as shown

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Exploded view of the thermostat housing and thermostat-3.0L engine

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Exploded view of the water outlet housing and thermostat-4.0L engines

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I hope help you whit this (rated this help) Good luck.

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2 Answers

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If you are not seeing any coolent of the floor when parked, the chances are that you may have an internal engine leak, such as leaking thru headgasket and coming out as steam. Take your van to PepBoys for pressure testing for which they carge about $40.

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1 Answer

Replace heater core


Warning: Allow the engine to completely cool before beginning.
Using a thick cloth, turn the radiator cap slowly to the first stop.
Step back and let the pressure release.
Once the pressure has been released, tighten the radiator cap.
Disconnect the heater hoses at the engine compartment firewall and plug the ends to prevent further draining out of the system.
In the passenger compartment, remove the 6 screws attaching the heater core access cover to the plenum assembly. Remove the access cover.
Depress the retainer bracket at the top of the heater core. Pull the heater coer rearward and down, removing it from the plenum assembly.
Position the new heater core and seal in the plenum assembly.
Install the heater core access cover to the plenum assembly.
Install the heater hoses.
Check the coolant level and add coolant as required.
Check the system for proper operation and for leaks.......I hope this helps, Adios

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