Question about 1988 Ford F 250

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Remove the heater core in 1988 F250 pick-up

How do I remove the heater core in a 1988 F250.

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  • Anonymous Mar 24, 2014

    takes a long time to get heat

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1994 F-250 Heater Core


Answer for a 1995 F250:

Remove the glove-box door. Behind that is the heater core cover on the interior, passenger side of the firewall. Remove that cover and there is the heater core. Open the hood and look where the heater hoses enter the front right passenger area of the exterior side of the firewall. Disconnect the two heater hose clamps and you can then remove the heater core.

Jan 13, 2012 | 1994 Ford F250 Supercab

1 Answer

Heater will not blow out hot air in my 1988 ford F250. Thermostat and hoses are all good. Is there a sensor that may be causing the problem and where is it located?


Hello! There isn't a sensor that would disallow heated water to circulate through the heater core...If the temperature gauge rises to normal...And the upper radiator hose is hot along with the lower hose ...I can conclude water is circulating through the block...Question then becomes; Is it circulating through the heater core? And the answer to that is, I don't think so...With the heater control turned on high feel the outlet heater core hose (facing engine it's the one on the left) if it feels cold or not as hot as the inlet then one of two items are at fault...#1...The Plenum assembly, which the heater core sets in has an open vacuum line...#2...The heat control valve cable or the valve itself is not opening...See picture of valve below...It is on the firewall...Let me know if heat is passing through the heater core...If hot water isn't passing through the core and the valve is opening than the core itself is blocked...send a comment...Guru...Saailer

saailer_214.jpgMOTORCRAFT Part # YG229...$20

Oct 09, 2011 | 1988 Ford F 250

1 Answer

How do I replace my heater core on a 1988 my Ford f250


Hello there, here are steps to help you through:
  • Disconnect the negative battery cable.
  • After making sure the engine is cool, drain the coolant from the radiator into a suitable container for recycling. It is always good practice to replace the coolant with fresh coolant after replacing the heater core. The old coolant will contain corrosives and contaminants that will accelerate deterioation of the new core if you reuse it.
  • Disconnect the heater hoses from the heater core connector pipes on the engine side of the firewall.
  • Working in the passenger compartment, remove the glove box for better access.
  • Still working in the passenger compartment, remove the seven screws that attach the heater core cover to the plenum assembly (the plenum assembly is the protective housing into which the heater core is mounted.)
  • Disconnect the vacuum source but leave the vacuum harness attached to the plenum cover.
  • Remove the plenum cover.
  • Remove the heater core from the plenum chamber.
  • Reverse the procedure to install the new heater core.
  • Make sure the radiator drain plug is closed, that the heater hoses are properly tightened.
  • Make sure the new coolant is properly mixed with an equal amount of clean water (distilled water recommended) to produce a 50/50 coolant/water mixture.
  • Fill the radiator with the proper type and amount of fresh 50/50 coolant..
  • Start the engine and check for leaks.
  • Check the coolant level after driving the first few miles and top off the coolant level (after engine cools).
Hope I could be of help. Best of luck

Jan 12, 2011 | 1988 Ford F 250

1 Answer

How to get to the heater core in my 1988 chevy s10


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.

Jan 08, 2011 | 1988 Chevrolet S-10

1 Answer

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

1 Answer

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.

Dec 23, 2010 | 1988 Ford F 250

1 Answer

How to replace heate core 1988 buick reagal


REMOVE OR DISCONNECT
  1. Negative battery cable.
  2. Drain cooling system.
  3. Upper firewall weatherstrip.
  4. Upper secondary cowl.
  5. Heater hoses from core.
NOTE Blowing out residual coolant from inside the heater core will prevent coolant leakage into the passenger compartment when the heater core is removed.


  1. Sound insulator.
  2. Rear seat duct adapter.
  3. Heater duct.
  4. Heater core cover.
  5. Heater core.
INSTALL OR CONNECT

  1. Heater core.
  2. Heater core cover.
  3. Heater duct.
  4. Rear seat duct adapter.
  5. Sound Insulator.
  6. Heater hoses to core.
  7. Upper secondary cowl.
  8. Upper firewall weatherstrip.
  9. Fill cooling system and check for leaks.
  10. Negative battery cable.

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Oct 21, 2010 | 1988 Buick Regal

1 Answer

Ford 1988 f250 will not start up.


Pass side inside on the fire wall inside by the heater core just below it. There's a black box with white botton on top. Push the white button downword to reset the fuel pump.

For the fuel filter, you'll find it along the inside fram rail in the driver's side. Just follow the fuel lines.

Good luck oh and not sure if the 1988 F250 are the same as the 86, but if they are what i typed out should help. Happy Easter

Apr 12, 2009 | 1988 Ford F 250

1 Answer

How do i remove the heater core in a 1988 F250 pickup


I don't have that old of a shop manual but you usually have to open up the heater plenum case under the dash to acess the heater core. The disconnect fr the heater hoses is under the hood at the fire wall near the passenger side.

1996 version

Heater Core Removal
  1. Allow the engine to cool. Observe the safety precautions in Section 03-03 .
  1. Place a thick cloth over the radiator cap. Turn the cap slowly to its first stop to release system pressure. When the pressure has been released, tighten the radiator cap.
  1. Disconnect the heater water hoses (18472) from the heater core (18476). Plug the hoses.
  1. Remove the glove compartment.
  1. From inside the passenger compartment, remove the seven screws that attach the heater core cover (18B300) to the heater air plenum chamber (18471).
  1. Disconnect the vacuum source. Leave the A/C plenum vacuum harness (18C581) attached to the heater core cover. Remove the heater core cover.
  1. Remove the heater core from the heater air plenum chamber.
good luck

Jan 08, 2009 | 1988 Ford F 250

4 Answers

Heater core


You have to pull the dash and all the lower fascia, then remove the box that houses the Heater Core Take the clamps off the heater hoses from the engine compartment side of the firewall and disconnect the heater hoses. Disconnect the bracket that holds the heater core in place from the inside of the passenger compartment (if present.) Carefully remove the heater core and discard it. Install a new heater core reversing the above steps.

Oct 18, 2008 | 1988 Chevrolet Cavalier Z24

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