Honda Car Forum


 

Go Back   Honda Car Forum - Accord Parts Civic Tuning Acura Racing > Discussion > Honda Technical

Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 28 Jan 2008, 12:12 pm
RSL RSL is offline
Junior Member
 
Join Date: Jan 2008
Posts: 5
Default Heater core or evaporator?

The windows on my ’94 Accord started fogging so badly that I cannot even drive the car. After searching the threads, I quickly diagnosed the problem as the heater core.

However, after crawling into the passenger foot well to look around, it appears the moisture in the passenger floorboard is coming from the area beneath the glove box (A/C evaporator) rather than the center console area (heater core). I felt the carpet in the foot well that goes up toward the center console, and it was dry. The whole passenger floor mat was damp, but the carpet underneath was not. At the extreme top of the passenger floorboard area (directly below the glove box), there is a spattered residue that didn’t appear to come from a slow leak – more like an explosion. The fluid doesn’t smell like antifreeze to me.

I pulled off the rubber drain tube from the evaporator, and it was not clogged.

Besides the extreme fogging and damp passenger floor mat, other symptoms of the problem are: the air conditioner was not very cold last summer, vapor rises from the air conditioner vents when the system is first turned on, and an unpleasant odor has been in the car for several months.

I appreciate your help!

Last edited by RSL; 28 Jan 2008 at 12:39 pm. Reason: misnamed a part
Reply With Quote
  #2 (permalink)  
Old 02 Sep 2008, 06:27 pm
Junior Member
 
Join Date: Sep 2008
Posts: 3
Default Re: Heater core or evaporator?

Dude...
Did you ever get any replies on this???
I'm totally experiencing the same thing on my 1994 accord ... to the "Tee" that you described ... the fogging up, the wet passenger floor, which I do see the leaks from time to time.
The shop just told me that they suspect a leaky evaporator since refrigerant dye is not detected on any visible A/C lines.
I was wondering what you ended up doing? I'm considering trying to replace tje evaporator myself, but have never done that kind of job before.
Thanks.
Reply With Quote
  #3 (permalink)  
Old 04 Sep 2008, 10:06 am
RSL RSL is offline
Junior Member
 
Join Date: Jan 2008
Posts: 5
Default Re: Heater core or evaporator?

I successfully changed the heater core myself and have had no problems since. The repair was extremely difficult and time consuming, but it cost me $300 vs. $1,200 to have it fixed. There were several challenging aspects of the repair, the worst of which were removal of the dash (keeping track of all the electrical connections and fasteners) and removal and reinstallation of heater hoses. I ended up cutting the heater hoses because they wouldn’t come off, and installing the new hoses without removing major engine components was almost impossible. I nearly gave up and considered having the dismantled car towed to a shop several times. But, with lots of persistence and some new tools (swiveling socket wrench and curved needle-nose pliers), I eventually put it all back together. I probably spent 16 hours on the project from start to finish. I can tell you where I bought the heater core and hoses if you need help finding them. Good luck!
Reply With Quote
  #4 (permalink)  
Old 04 Sep 2008, 10:42 am
Junior Member
 
Join Date: Sep 2008
Posts: 3
Default Re: Heater core or evaporator?

I assume that the heater core and evaporator is roughly in the same place.
Since the suspect in my A/C issue is the evaporator, it's likely I won't be dealing with the same hoses you did, but probably the same toughness in removing 14 year hoses off.

Anyhow ... I wanted to know which, if any, service manual you used to complete the job. Do you recall how "good" the service manual was in detailing the steps?

Thanks.
Reply With Quote
  #5 (permalink)  
Old 04 Sep 2008, 12:22 pm
RSL RSL is offline
Junior Member
 
Join Date: Jan 2008
Posts: 5
Default Re: Heater core or evaporator?

I used the Haynes manual. It wasn't as detailed as I would have liked, but I don't remember any glaring omissions. I had to hunt for some hard to reach fasteners that weren't pictured, but I found everything.
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
I have a 94 civic lx that has a/c problems. Have replaced compressor, evaporator core,... jobird_77 Honda Technical 4 15 Oct 2007 04:12 pm
how do i install a heater core on a 91 legend? big ray Acura Technical 4 18 Aug 2007 10:42 am
How to Clean Heater Core? - 93 Civic Dan Beaton Honda 3 1 19 May 2005 10:46 am
1987 Accord DX - Clogged Heater Core Ken Abrahamsen Honda 2 1 31 Dec 2004 07:23 am
heater core Pars Honda 3 1 02 Mar 2004 05:13 pm


All times are GMT -5. The time now is 04:33 am.


Attribution:
Honda News | Autoblog
Powered by Yahoo Answers




Powered by vBulletin®
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
LinkBacks Enabled by vBSEO 3.6.0 PL2 © 2011, Crawlability, Inc.
HondaCarForum.com is not affiliated with Honda Motor Company in any way. Honda Motor Company does not sponsor, support, or endorse HondaCarForum.com in any way. Copyright/trademark/sales mark infringements are not intended or implied.