Flushing the heater core - Honda-Tech

Flushing the heater core

LinkBack Thread Tools Search this Thread
Old 10-31-2008, 08:04 PM   #1
Thread Starter
Revolver123's Avatar
Join Date: Jun 2008
Posts: 35
Default Flushing the heater core

I think that's my problem based on other threads.

Question is - to do this, do I have to take apart the entire dash? Because for one, I don't know how to and two, a mechanic would charge a FORTUNE for this.
Revolver123 is offline   Reply With Quote
Old 11-01-2008, 05:02 AM   #2
iTrader: (1)
toyomatt84's Avatar
Join Date: Apr 2005
Location: ALL BLUE
Posts: 25,566

No you don't have to take apart the dash, as there is no real need to take the heater core out of the car.

Look at this picture:

The two longest/largest hoses leading out of the heater core, lead to your engine. So, disconnect the sides of those hoses that are nearest the two "E-15" labels. Then, with your car set to full heat (inside the cabin, since it controls the valve leading coolant into the heater core), push water through the valve side of the heater core hoses (top left in that picture). You should get fluid out of the top right hose.
toyomatt84 is offline   Reply With Quote
Old 11-04-2008, 09:37 PM   #3
Junior Member
RISRdotNet's Avatar
Join Date: Dec 2006
Location: 401, RI
Posts: 200
Default Re: Flushing the heater core (Revolver123)

you can buy a kit cheap at autozone... for backflushing,

(attachments for your garden hose)
RISRdotNet is offline   Reply With Quote
Old 11-12-2008, 04:07 AM   #4
Junior Member
hondasghost's Avatar
Join Date: Nov 2007
Location: St Louis, MO, USA
Posts: 21
Default Re: Flushing the heater core (RISRdotNet)

Be careful with these kits tho.. their easy to use and seem to work for the most part.. but i did it when i had my dakota... and maybe a week later my heater core went out... it started blowing smoke into the cab.. and leaking on the passenger floor... i don't know if the 2 are related but hey it's worth a heads up..
hondasghost is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
F23 h23 Hharrishonda Honda Accord (1990 - 2002) 2 06-18-2008 11:25 AM
HOW DO I PUT ON A DEACHABLE STEERING WHEEL? Devious951 Honda Civic / Del Sol (1992 - 2000) 2 12-25-2007 02:57 PM
how do I "check for continuity" ZipTieGUy Honda Civic / Del Sol (1992 - 2000) 24 03-12-2006 04:49 PM
How Do You Reset Idle Speed??? spcrxracer Honda CRX / EF Civic (1988 - 1991) 8 09-10-2004 05:15 AM
how to take off door molding without tearing anything up? 91hondacrx Honda CRX / EF Civic (1988 - 1991) 7 08-19-2004 06:53 AM

1990, 2001, 91, accord, civic, core, flushing, heater, honda, hose, location, pic, pictures, prelude, valves

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -8. The time now is 07:24 PM.

Honda and the Honda marquee are registered trademarks of the American Honda Motor Company, Inc. Neither American Honda Motor Company nor its subsidiaries or affiliates shall bear any responsibility for Honda-Tech.com content, comments, or advertising. Honda-Tech.com is not affiliated with American Honda Motor Company in any way. American Honda Motor Company does not sponsor, support, or endorse Honda-Tech.com in any way. Copyright/trademark/sales mark infringements are not intended or implied.