Heater core replacement instructions needed

2004 HONDA CRV

100,000 MILES • 1.7L • 4 CYL • 2WD • AUTOMATIC

AUTOCESAR

MEMBER
1 POST

I’m not getting any heat in my car and I feel I need to replace my heater core. I’ve done other procedures but still not getting any heat. Is there a guide for the replacement of it? Thanks

Sep 28, 2020 at 10:09 PM

DANNY L

✓ASE Certified Mechanic
5,648 POSTS

Hello, I'm Danny.

Here is the information you requested. Here also is a tutorial for heater core replacement to get you started:

https://www.2carpros.com/articles/replace-heater-core

I've attached picture steps below for your vehicle. Hope the helps and let us know if you have any further questions on this issue. Thanks for using 2CarPros.

Images (Click to enlarge)

Professional Diagram for 2CarPros Members
Click here to log in and view diagram.

Sep 28, 2020 at 10:36 PM

HERBTHAT

MEMBER
1 POST

Where can I find step by step removal of heater core in my car?

Nov 7, 2023 at 10:45 AM (Merged)

STEVE W.

✓ASE Certified Mechanic
15,200 POSTS

Not a fun job. The basics are that you have to recover the AC charge if it has AC, drain the coolant, then remove the instrument panel and the heater unit. Take the heater apart and change the core and reverse the process. Book time in a fully equipped shop with experience in them is eight hours.

There are a few places that have the factory instructions Mitchell, Alldata and there are even full copies of the factory manuals online from back when Honda had them for free. Honda hookup is one such place, in their downloads area.

Nov 7, 2023 at 10:45 AM (Merged)