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The rear heater core is clogged, how hard is it to replace on a 1999 expedition

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About 1-2 day's job. You gotta remove the dash.Usually, it is in the center console by the firewall.

Posted on Nov 12, 2009


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Rear heat not working in 1999 ford expedition. the blend door is operating, is it a good idea to back flush rear heater core ? only one hose getting hot!

It won't hurt to backflush it, but be sure to isolate it from the rest of the system to prevent flushing the blockage somewhere else upstream. Don't be supprised if it won't flush out and you have to replace the core.

Feb 17, 2013 | 1998 Ford Expedition

1 Answer

1999 ford Expedition heater core removal

If the hose is leaking at heater hose,maybe heater core is bad,here's a repair guide to the heater core and hose.

Dec 22, 2012 | 1999 Ford Expedition

1 Answer

Heater coil on a 1999 ford expedition how hard is it to change out?

Inspect/Replace 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.

Dec 03, 2010 | 1999 Ford Expedition

2 Answers

How to replace heater core ford expedition 1999
Go to the above link for a video procedure to explain the removal of heater core.

Nov 12, 2009 | 1998 Ford Expedition

1 Answer

I have a 1999 Ford Expedition SLT, 4.6L, 2WD, I hear water splashing in the dash and radiator fluid leaking out of the rear heater core overflow hose, I had the front heater core replace two years ago. Has...

hi the problem with the coil rusting out is that it accumulates a/c water and it's not draining out fix the draining problem and then replace coil core good luck

Sep 02, 2009 | Ford Expedition Cars & Trucks

1 Answer

Have a 2000 ford expedition and the ac in the front blows hot but the rear ac works fine. what could it be

Listen and see if the vent flap is moving from the hot position, to the cold position. If that's working then the evaporator may be clogged. It sits inside the same box that the heater core is inside of and if it becomes clogged with hair or dust, then it wont allow the blower to blow through it. But it would then bring hot air through the vents because the heater core is there too.

Jun 15, 2009 | 1998 Ford Expedition

1 Answer

2000 expedition heat problem

first of all I would make sure the car has proper amount of coolant and you are right it is very possible you have an air pocket in the system also ask your self did you change the thermastat after you did the heater core when the car is cold make sure there is coolant at the cold mark on the reservior bottle because you might not have enough coolant then start the car and get it up to temp and if the coolant goes not go up to the hot mark when the car gets to temp you do not have enought coolant just keep adding coolant and you will see the bubble after the thermastat opens

Jan 02, 2009 | 1999 Ford Expedition

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