Question about 1995 Mazda B-Series

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Do you need to remove the dashboard to change the heater core on a Mazda B2300 1995

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  • John Jones Jun 19, 2009

    Thanks pumpkinman but I talked to the mechanic at the dealership he confirmed my worst fears the 95 B2300 you need to remove the Dash to access the heater core which I have done the other day but it's been raining for the last few days

    Thanks Again



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Go inside engine bay.loolk for the heater blower motor.your heater core is behind that.and it will give you an idea to if its easy gotten to.u usually dont have to remove the dash.just some plastic shrouds.see where your heater hoses go in from engine bay and thats where itll be

Posted on Jun 17, 2009


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Changing heater core 94 mazda b2300 2.3

This is a re-badged Ford ranger so watdh the video of rthe ranger heater core change out. How To Replace Heater Core On Ford Ranger

Dec 05, 2016 | Mazda B2300 Cars & Trucks

1 Answer

Heater core replacement

not changing AF every 2 years, cause the acid build up.
then eats the core to death, a 1 hr job becomes 8 or more...

how hard, well on a range of 1 to 10 , (depends on skills and tools)
a 5?
taking things apart is easy , getting it all back and working , now that is is challenging.
the thing is , the heater box just dont drop out of the dash in most cars with say 2 screws. (i had 1961 truck that did)

but i open the FSM for your car.
and it shows 37 steps out, and 38 back in
here is the out. (minus photos)
quote (partial) (buy the book buy the FSM and read it.....)
  1. Before servicing the vehicle, refer to the Precautions Section. Also see the IMA system disabling before proceeding with any procedure. {DEFEAT THE AIR BAGS or DIE !}
  2. Disconnect the negative battery cable and wait for 3 minutes.
  3. Place the front wheels in the straight ahead position.
  4. Drain the cooling system into a clean container for reuse.
  5. In the engine compartment, open the heater valve cable clamp and disconnect the cable from the heater valve arm. Then, turn the heater valve to the fully opened position.
  6. Disconnect the heater hoses from the heater core.
  7. Remove the heater housing-to-chassis n

  1. Remove the front center floor console.
  2. Remove the glove box
  3. Remove the center lower cover.
  4. Remove the radio.
  5. Remove the steering wheel access cover and disconnect the driver air bag connector.
  6. Remove the steering wheel cover and remove the driver air bag.
  7. Loosen the steering wheel nut, then use a puller and remove the steering wheel.
  8. Remove the steering column covers.
  9. Disconnect the cable wheel connectors and remove the cable reel.
  10. Disconnect the combination switch and ignition switch connectors.
  11. Remove the steering joint pinch bolts.
  12. Remove the steering column attaching nuts and remove the steering column.
  13. Disconnect the passenger air bag connector.
  14. Remove the 3 air bag mounting nuts, then pry carefully with a screwdriver and lift the air bag out of the dashboard.
  15. Remove the A pillar trim on both sides.
  16. From under and behind the dashboard, disconnect and label all electrical connectors.
  17. Remove the driver coin tray.
  18. Remove the dashboard attaching bolts (A) and screws (B) as shown.
  19. Carefully lift up on the dashboard and disengage it from the holders (C) and (D).
  20. Remove the dashboard through the door opening.
  21. Discharge and recover the air conditioning system refrigerant.
  22. In the engine compartment, remove the refrigerant lines-to-evaporator housing bolts.
  23. Separate the lines, discard the grommets and plug the openings to prevent contamination.
  24. Disconnect the evaporator housing's temperature sensor connector.
  25. Remove the evaporator housing-to-chassis screws/nut and remove the evaporator housing.
  26. Disconnect the mode control motor and the air mix control motor electrical connectors and remove the wiring harness clips and the wiring harness from the heater housing.
  27. Remove the heater duct clip, the heater housing-to-chassis nuts and the heater housing.
  28. Remove the heater core cover screws and the cover.
  29. Remove the heater core pipe clamp screws and the clamp.
  30. Remove the heater core from the heater housing.

Nov 22, 2013 | 2001 Honda Insight

1 Answer

Need diagram for replacing heater core

    Detach the heater core hoses at the firewall. The two black hoses attach near the firewall on the passenger's side of the engine compartment. Squeeze the hose clamps on the end of the hoses with pliers and slide the hoses from the heater core tubes.

    • 4Remove the lower passenger's-side and driver's-side dashboard panels. The two panels are held in with push-pins. Raise the center of the push-pins with a small, standard screwdriver and pull the pins from the panels. Pull the panels away from the dashboard to separate them from the dashboard.
    • 5Remove the center console. Separate the gear select trim piece from the center console, using a small standard screwdriver to pry the trim piece from the center console. Lift it over the shift knob and rotate it to clear the knob. Remove the retaining screws holding the center console in place with a Phillips screwdriver. Lift the console up over the shift knob and remove it from the interior.
    • 6Remove the glove box. Open the door to the glove box. Squeeze the two retaining tabs on the ends of the glove box and pull the glove box away from the dashboard. Remove it from the interior.
    • 7Detach the drain tube from the heater core cover, which is located behind the glove box. The tube can be pulled from the heater core cover by hand. Detach the air intake duct from the bottom of the heater core cover. The air intake duct runs from the bottom of the cover to the center of the dashboard. Remove the duct by hand.
    • 8Remove the retaining screws on the black heater core cover with a Phillips screwdriver. Pull the cover from the heater core and remove it from the interior. Remove the heater core clamp screw with a Phillips screwdriver, pull the clamp away from the heater core, then pull the heater core from the housing.
    • 9Place the replacement heater core against the housing. Place the clamp over the heater core and install the clamp retaining screw with a Phillips screwdriver. Position the heater core cover over the heater core and install the retaining screws with a Phillips screwdriver.
    • 10Attach the drain tube and the air intake duct to the heater core cover.
    • 11Install the glove box. Squeeze the retaining tabs on the sides of the glove box and push it into position against the dashboard. Release the tabs when the glove box is in position.
    • 12Install the center console. Guide the console over the shift knob and install the retaining screws with a Phillips screwdriver. Slip the shift selector trim piece over the shift knob and push it into the center console.
    • 13Place the lower passenger's-side and driver's-side dashboard panel in position. Install the push-pins into the retaining holes, pushing the in center of the pin to engage the pins.
    • 14Fill the radiator with coolant. Most climates require a 50/50 mix of DEXCOOL coolant and water. 2.2L engines require 8.6 qts., 2.4L

Nov 22, 2012 | 2000 Oldsmobile Alero

1 Answer

Replace heater core

    • Drain the cooling system. Draining the cooling system will prevent toxic engine coolant from leaking into the passenger cabin of the vehicle during removal of the heater core. To drain the cooling system, simply disconnect the lower radiator hose from the radiator by loosening the hose clamp and pulling the hose off. Be sure to drain the fluid into a sealable container and dispose of the coolant at an appropriate disposal site.
    • 2Pull the dashboard six inches rearward. In order to do this, you must remove the following parts; the center dash bolt (located under the defroster vent cover), the bolts under the driver and passenger kick boards, the bolt connecting the dashboard to the radio mount, and the the bolt connecting the dashboard to the rear of the glove box. The locations of these bolts are immediately apparent upon looking under the dash. Once you have removed these bolts, you can pull the dashboard rearward and secure it.
    • 3Remove the heater core box. The heater core box is a black plastic box that surrounds the heater core. This part should be visible when looking down into the dashboard from the passenger side seat. Remove the two bolts on top holding it to the firewall and another on the bottom near the foot well. After removal of these bolts, the heater core and box are attached to the vehicle only by the coolant lines, which you can now disconnect by reaching into the box and pulling them off of the heater core (you may have to loosen the clamps first).
    • 4Install the new heater core. This is accomplished by applying steps 1 through 3 in reverse order; re-connect heater core coolant line, re-install heater core box (be sure to apply silicon sealant to the edges of the box, hermetically sealing it), replace the dashboard and install bolts, and re-fill the cooling system.

Oct 22, 2012 | 1999 Chrysler 300M

1 Answer

929 Mazda (1992) No Heat But A/C Works I have a 929 Mazda 1992 year. Does not blow any heat. I noted that the 30 amp fusible link for the heater was busted. Replaced it but still no heat. A busted fuse...

First check your fluid in your radiator if its low your heater will not work. Check all your heater hoses and make sure they are not kinked.
Your heater core may be plugged That will stop the heat flowing as well. If it's the heater core it will have to come out and replaced most likely. Not sure if there is a heater valve on that car.

Mar 05, 2017 | 1992 Mazda 929

1 Answer

Do I have to drob the steering colum in my 1991 licoln TC in order to replace the heater core?

No you do not have to drop the steering column to change the heater core. It should be located under the passenger side of the dashboard. The easiest way to find where it is located would be to look under the hood for two hoses that go from the front of the engine through the firewall and that will tell you exactly where it is located. To replace the heater core you will have to disconnect the two hoses under the hood from the heater core then remove the heater box from underneath the dashboard.

Dec 28, 2010 | Lincoln Town Car Cars & Trucks

1 Answer

How do i remove the heater core in a 2001 mazda b2500?

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 27, 2010 | 2001 Mazda Pickup Regular Cab

1 Answer

Heater wont warm up in a 2000 chev tahoe

Check that the heater core's two tubes that enter the firewall are getting hot. If they are, then you are having a blend door problem which will require disassembling the dashboard instruments to get at the vacuum motors that control the blend doors.

If the heater core is not getting hot at both tubes, then the following procedure outlines how to change the heater core out:

Removal & Installation

Heater core removal

To Remove:

  1. Remove the HVAC assembly.
  2. Remove the heater core cover screws.
  3. Remove the heater core cover from the HVAC assembly.
  4. Remove the heater core gasket from the core.
  5. Remove the heater core from the HVAC module assembly.

To Install:

  1. Install the heater core to the HVAC module assembly.
  2. Install the heater core cowl gasket to the HVAC module assembly.
  3. Install the heater core cover and screws to the HVAC module assembly.
  4. Install the HVAC module assembly to the vehicle.

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Oct 29, 2010 | 2000 Chevrolet Tahoe

1 Answer

Where is the heater core in my 2002 chevy Tahoe and do I need to remove the entire dashboard to change it out?

To find the heater core, follow the inlet and outlet lines from your cooling system.

Yes you will be required to remove the dash to replace it.

Dec 31, 2009 | 2002 Chevrolet Tahoe

1 Answer

Expansion valve for a mazda 626 where does it go

it attaches to the A/C evaporater core inside the a/c module that is in/behind the dashboard. To access it you would need to remove the dash assembly and then remove the a/c/heater core assembly. Not an easy task for the do it yourself person as special tools and equipment are nneeded to recover and recharge the a/c system itself

Jul 16, 2009 | 1999 Mazda 626

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