Question about 1990 Ford F150

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Heater core 1990 Ford F-150

How do I get the old heater core out?

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I believe this is the easiest heater core ever invented. If it is like the 1986 model. I believe it is. You take out the glove box door. The heater core is right there under a cover in the duct work.

Posted on Oct 13, 2008

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Iv changed everything that i can for my heater and i only blows cold air. Is there a device that opens and close for the heater and AC?


Its probably your vacuum lines for the heater doors under the dash. These lines open a close doors to allow air to blow through the heater core.

Jan 05, 2011 | 1988 Ford F 150

1 Answer

No heating in ford econoline 1990 150 6 cyl 4.9


Thermostate or heater core take it to someone that has a computor that plugs into your car or manual one and enter the year and make of your car then get more results.

Jan 01, 2011 | 1990 Ford Econoline

1 Answer

How do you access the 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 20, 2010 | 1990 Ford Tempo

1 Answer

How to remove heater core from truck ???


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 | 1990 Ford F250

1 Answer

How do I change a Heater core on a 1990 Buick Century


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.

Nov 26, 2010 | 1990 Buick Century

1 Answer

I have a 1990 Camaro, I had the heater disconnected - cost was $150, they said to replace it with a new heater would be over $800 - is this a fair price ?- The car is not worth more than $1,000


if you mean to replace a heater core,
the heater core is about $40.00 from Autozone,So the $150.00 is labor,this job can be done in one hour and at shop rates today that would be $50.00,
you need to buy the heater core yourself and find another shop.

Jan 23, 2010 | 1990 Chevrolet Camaro

2 Answers

89 Ford F-150, 4x4, 4 spd Manual,4.9 L 6 cyl, Need to have instructions on location and R & R on the heater core. Thanks.


the heater core is behind the glove box, remove the glove box open excess panel and you will see the core. remove heater hoses and pull core out installation is reverse order. berrydalewolf

Oct 29, 2009 | 1989 Ford F 150

1 Answer

Does the dash need to be removed on a 1990 F-150 to replace the heater core?


No, just remove the glove box and then the plastic cover behind it. Once the cover is removed, you'll find your heater core.

Jun 07, 2009 | 1990 Ford F150

1 Answer

How to replace heater core on 1990 ford ranger


Remove the glove box door. Behind the glove box there will be a big plastic panel that contains the evaporator and the heater core. The heater core will be copper. That is the one you need to remove. Do not try to disconnect the aluminum one. That is for your AC. Remove the two heater hoses on the outside of the firewall that connect to the heater core and it will slide right out.

Mar 03, 2009 | 1990 Ford Ranger SuperCab

1 Answer

How do you take out the heater core in a 1990 thunderbird?


disconeck heater hoses under the hood on right side of motor and then inside car under dash remove the heater box on right and the core is inside,4-5 hour job.

Nov 28, 2008 | 1990 Ford Thunderbird

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