Question about 2001 Honda Insight

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Heater core replacement

I believe I need to replace the heater core in my Honda insight. I smell coolant but I do not see any. I smell the coolant inside the vehicle. It has usually been my experience that this is the heater core. How hard is this to change?

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  • Honda Master
  • 20,706 Answers

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.

Posted on Nov 22, 2013


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Posted on Jan 02, 2017

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SOURCE: How to replace heater core

Heater Core Honda Civic/CRX/del Sol 1984-1995 Repair Guide REMOVAL&INSTALLATION
See Figures 1, 2 and 3

  1. Disconnect the negative battery cable and disable the SRS system (if equipped.)
WARNING All SRS wire harnesses are covered with a yellow insulation. Read the SRS precautions found in this section and install the short connectors as described.
  1. Properly drain the cooling system.
  2. Disconnect and plug the heater hoses at the firewall.
  3. Disconnect the heater valve control cable.
  4. Remove the heater unit attaching nut on the firewall.
  5. Remove the dashboard as follows:
    1. Remove the center panel.
    2. Disconnect the wire connectors at the fuse box.
    3. Disconnect the sunroof switch connector, if equipped.
    4. Disconnect the ground cable at the right of the steering column and the power mirror switch wire connector.
    5. Remove the side air vent knob and face plate.
    6. Remove the screws attaching the air vent control lever.
    7. Remove the center panel, radio and heater control head.
    8. Remove the gauge upper panel (4-door) or instrument panel (3-door).
    9. Disconnect the speedometer cable.
    10. Remove the center upper lid.
    11. Remove the side defroster garnishes on both ends of the dash.
    12. Lower the steering column.
    13. Remove the dashboard mounting bolts.
    14. Lift and remove the dashboard assembly.
  6. Remove the heater duct.
0900c15280061a21.jpgFig. 1: Removing the heater duct assembly
  1. Remove the steering column bracket and duct assembly.
  2. Remove the heater assembly mounting bolts.
  3. Remove the heater assembly and remove the heater core.
0900c15280061a22.jpgFig. 2: Removing the heater case assembly 0900c15280061a23.jpgFig. 3: Removing the heater core from the heater caseTo install:
  1. Install the heater core into the heater unit.
  2. Install the heater assembly and the attaching bolts.
  3. Install the heater duct and steering column bracket.
  4. Install the dashboard assembly. Tighten the mounting bolts until just snug.
  5. Raise and attach the steering column.
  6. Install the center upper panel.
  7. Connect the speedometer cable and install the instrument gauge assembly.
  8. Install the control head, radio and center panel.
  9. Install the side vent and face plate.
  10. Connect the ground cable at the right of the steering column and the power mirror switch wire connector.
  11. Connect the sunroof switch connector, if equipped.
  12. Connect wire connectors at fuse panel.
  13. Install the heater unit attaching nut on the firewall.
  14. Connect the heater valve control cable.
  15. Connect the heater hoses at the firewall.
  16. Connect the negative battery cable.
  17. Fill, bleed and leak check the cooling system.

Posted on Sep 01, 2008

  • 2 Answers

SOURCE: Replace heater core for Honda Accord 1992 LX 2.2L

It's probably the valve in the cooling hose that lets coolant flow into your heater core. This is up against the firewall about 3/4 of the way down on the passenger side. When you switch the knob from warm to cool, you should be able to see the little "arm" on the hose move back and forth. You may need someone else to watch as you move the temperature knob back and forth.

Also, watch out for over heating (not due to the valve), because it could mean that you could need to replace your water pump and/or thermostat in the near future. If you haven't replaced your timing belt recently (or if you have) and didn't change the water pump at the same time (Honda recommended) Your water pump could be failing.

Odds are pretty good though that it's just where the cable connects to the valve. It may have rusted over time and stuck, or broke the end of the cable, or just need lubricating/bending back into place.

If this is not the case, then you may just have a clogged heater core and should have your coolant system thoroughally flushed in the near future. If none of these work, you may need to replace your heater core.

Drop me a line when you check these over and I'll see what I can come up with.


Posted on Sep 18, 2008

  • 3 Answers

SOURCE: windows fog up,small anti-freeze smell

try looking at the air filters. MIne was totally clogged with ****. No air circulaton equals foggy windows

Posted on Dec 29, 2008

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SOURCE: Replace Timing Chain for 2003 Honda CRV?

Rule of thumb this is a timeing belt and it should be changed every 75,000 mile as a general practice. I hope this helps, dont forget to rate my answer, thanks

Posted on Feb 20, 2009

  • 1050 Answers

SOURCE: 07 Honda Civic air conditioner has a musty smell.

You need to make sure that the evaporator housing drain is clear. There will be a small tube or opening that usually drains out under the engine compartment near the passenger side. Run the A/C with the car raised safely, and look underneath, you should see it dripping, if not, you'll have to find where it is supposed to be dripping and clean it out with something like a pipe cleaner. Even if you see it dripping, clean it out. Then you have to buy a can of aerosol A/C disinfectant, this should be available at any good auto parts store. Turn the A/C on high and spray the disinfectant into the intake vent of the system. The location of the intake may depend how you have the A/C set. "Fresh" pulls from the outside, usually the valence right in front of the window, "recirculation" pulls from inside the car under the center of the dash. I would do both.

Posted on Apr 30, 2009

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You can find examples of the heater core at this link

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