Question about 1998 Ford F150 Regular Cab

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1999 4x4 F-150 - Replace heater Core

The hater core is leaking and from what I see on this modelI need to remove the entire dash to perfirm the R&R. Is there a better way?

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From my experience I would say that you need to take apart half the dash in your truck. I replaced a heater core in my truck and it wasnt to hard....as long as you have the right tools of course

Posted on Nov 21, 2008

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How do i replace a heater coil


In order to replace the heater core the entire dash will need to be removed from the vehicle. The heater core access door can then be removed and the heater core replaced. This is a huge job!

Apr 10, 2013 | 1994 Ford Taurus

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How do i remove the heater core from a 1988 audi 90? ... my heater core blew and i was wondering if i can get to it from under the dash or if i will have to remove the entire dash to get to it?


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 27, 2010 | 1988 Audi 90

2 Answers

Need to replace heater core


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 11, 2010 | 2006 Pontiac Grand Prix

2 Answers

Heater core no good neede intrutions on how to replace it? Need a web site that could show me how?


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.

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How do i change a leaking evaporator core.


the entire dash, door to door top to bottem has to be removed to be able to take out hvac housing so you can take apart to get at the core [recomend do heater core at same time] the dash comes out as an entire unit guages and all. bolts on ends under plastic covers,on top near winshield under vent trim.,bolts on floor in center below radio and a/c controlls,steering column has to come out. multiple wire connectors etc. its an all day job for a pro so its going to take awhile but its pretty straight forward

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Ive bypassed my heater core and was wondering if i can hook up a new heater core in the engine bay im assuming this wont work but thought id ask so i dont have to take apart my entire dash


How would u direct airflow over another heater core to the passenger compartment?
no u must remove the entire dash to replace the heater core, there is no other way to get heat into the car.

Jan 10, 2010 | 1995 Ford Thunderbird

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If leaking coolant under dash on passenger side floor broad it's your heater core. Call's for 2.8 labor flat time to remove heater core, in some case's you'll have to recover, evacuate and recharge your A/C system to remove your heater core.Sit under dash on passenger side.

Dec 28, 2009 | 1999 Pontiac Grand Prix

3 Answers

Need help


Its not hard to change. The hardest part is getting to it. Start by removing the glove box. It should be behind that.

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Water under dash board 1983 buick skylark


Your heater core needs to be replaced. The heater core is like a mini radiator, providing heat for the interior by coolant circulating from the engine, into the heater core, and back to the engine again. Like a radiator, a heater core can spring a leak, especially w/ age as a factor. This results in the leak inside the car, which also causes the 'smoke' you see, which is actually vapor form of coolant.

Nov 17, 2008 | 1983 Buick Skylark

1 Answer

Heater core


Ok to replace the heater core in the allante you must first take the door off the glove box by removing 4 screws in the corners by the hinges. Remove the valence below the dash on the passenger side.

Now follow these steps

1. remove the radio module disconnect all wires and set it aside
2. Remove the bracket that holds the engine control module slide it out and away
3. Remove the duct control unit slide it down and out from under the dash
4 remove the screws that hold the duct work together, rotate to right and then down from under the dash
5. After the prior the heater core is in view. it has two 8 mm screws holding it in place remove them
6. Now go under the hood with a long extension loosen the clamps on the heater core
7. with at least a 12 inch thin bent flat screwdriver at a 90 degree angle loosen the hose and wiggle it off the heater core nipples
8. Go back into the cockpit and remove the heater core by sliding rearward and to the right
9. Angle hater core down and slide out.
10. reverse to reassemble.

Aug 11, 2008 | 1993 Cadillac Allante

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