Signs of a Bad Heater Core?? - Ford Mustang Forums : Corral.net Mustang Forum
Go Back   Ford Mustang Forums : Corral.net Mustang Forum > Windsor Tech Forums > 5.0/5.8 Engine Tech

Corral.net is the premier Ford Mustang Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 03-16-2002, 11:51 PM   #1
Registered User
 
J.Bo's Avatar

Trader Feedback: (12)
 
Join Date: Apr 2000
Location: Raleigh, NC
Posts: 611

Question Signs of a Bad Heater Core??

What are the signs? When I cut the heat on in the mornings, a light white smoke comes out the vents. Also, a light smell of antifreeze, plus the defost just fogs up and takes 30 minutes to get rid of the fog. Another thing when the heat is off, after driving the drain tube leaks out liquid like the A/C has been on.
__________________
93 cobra intake ported, Twisted Wedge heads stage II ported & milled .030, TFS Stage 1 cam, Accufab Race TB, Pro-M 77mass meter, FRP 1.6 rr., 255 fuel pump, msd 6a, UD crank pulley, 3:73, BBK 1 5/8 LT'S, Dr. Gas X pipe, Dynomax Ultra Flow cat-back.
J.Bo is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 03-16-2002, 11:54 PM   #2
Registered User
 
avbcon12's Avatar

Trader Feedback: (26)
 
Join Date: Jan 2002
Location: West Bloomfield, MI/ Philadelphia PA
Posts: 5,781

all of the above!!

that sure sounds like it to me.

take care,
adam
__________________
-Adam
90 GT black, V2 SI-Trim, Blow-Thru A/A Intercooler
stage 3 "Y" heads/ Bennett Racing intake, TFS#1, long tubes, 3"Pro-Dumps/H-pipe, TKO500, 3.55's, Home made TA and PHB, cobra brakes, 22 gallon Fuel Safe Cell, PMS tuned etc.. built for twisties
avbcon12 is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote Quick reply to this message
Old 03-17-2002, 12:10 AM   #3
Registered User
 
J.Bo's Avatar

Trader Feedback: (12)
 
Join Date: Apr 2000
Location: Raleigh, NC
Posts: 611

NOOOOOOOOOOOOO!! How complicated is it to replace? I have an 86 gt.
J.Bo is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote Quick reply to this message
Old 03-17-2002, 01:44 AM   #4
Registered User
 
Zephyr 351c's Avatar

Trader Feedback: (0)
 
Join Date: Jan 2002
Location: Western NC
Posts: 890

Check your heater hoses first, i started to replace a HC in an 81 Stang but the heater hose was the prob, and it was doin the same things your car is.

The difficulty of replacemant depends on if you have factory AC or not. Ive done three HC replacements in the 79-86 dash. If you have AC and havent done it before, its gonna take a while, first time took me about four hours, although now i could do it in about 2.5 i think.

Does your car have AC? I could try to type it out from memory, but would rather not if you dont have AC.

If you dont have AC, just take the glovebox out, and youll see a cover behind where the glovebox was. Take the screws out and youll see the HC, take the heaterhoses off, push the HC out of the heaterbox a little from the firewall side, then pull it out of the glovebox opening, 15 mins and your done.

Zach
__________________
Zach
'81 Boxtop Zephyr. BPUed 302/C4. A few mods, and a huge pile of parts to be put on.
1990 F150 4WD: 5.8/E4OD. Pretty much stock. Driven Daily.
Zephyr 351c is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote Quick reply to this message
Old 03-17-2002, 08:08 AM   #5
Registered User

Trader Feedback: (0)
 
Join Date: Aug 2000
Location: Ridgecrest, CA
Posts: 535

It is not all that hard, just time consuming. If you don't have AC then just drop your glovebox and the access panel is right there, straight forward. Having done this a couple of times there is no real "short cut" About a 3 hour job, the dash comes apart one piece at a time and is pretty straght forward. Big thing is to baggie and label screws as well as vac lines. PITA when you are looking for where things go. Some people recommend the FORD unit, me I figured they screwed it the first time what is to stop them a second, so in went a unit from Pep Boys. 20 bucks or there abouts. Put JB weld around the in and out tubes this way you will not have to be REAL careful hooking the heater hoses back up. You will see that there is not a whole bunch there. It will take you about 3-4 hours to do. The only "special" tool that was needed was those star screwdrivers. Ford will charge you about 400 to do the job.

Try doing a search on the boards, there was a guy awhile back that put out some awesome detailed instructions on this.
__________________
88 GT, 38# injectors, Ported Cobra intake, 70mm TB, GT-40X heads, E303, 3.73's, KB Super Subs, FMS Aluminum driveshaft, Metco driveshaft loop, MM Torque arm, MM Panhard bar, 4point K brace, FF lower control arms, KYB's and FMS C Springs up front, H&R 650's for the back. 5 Lug conversion w/ 17in. Cobra R's. SN-92 Paxton-9 PSI. AFM Power Pipe. Tremec 3550.

best qtr: 12.3 @114 alt 2400ft on a crappy track, airport runway...
Other toys:

02 Honda CBR 954
03 Lightning
03 Z-4 (GF's)
HighDesert88GT is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote Quick reply to this message
Old 03-17-2002, 12:24 PM   #6
Registered User
 
mikejb's Avatar

Trader Feedback: (0)
 
Join Date: Jan 2000
Location: KCMO/Independence
Posts: 983

J.bo It is easy. But it takes time to do it. I have done this on my 82GT 3 times already. Drop the sterring colum remove the 5 9/32 bolts that hold the dash to the firewall and theres a bolt on each kick panel to remove and pull dash out just enough to slice open the box that holds the core in with a dremal. Have a buddy with you to help put new one in and guide it through the firewall. Here is a link to some pics of mine. I would get a Ford heater core the parts store ones that cost 20 buks are junk and prolly wont last a year. Let me know how it goes. http://mywebpages.comcast.net/mike82gt/heatercore/
__________________
1986GT C9 351W. T-3550
Inner & Outer subs
Griggs GR40 Suspension
Panhard bar & Torque arm. Tub Kmember and A-arms.

1982 Mustang GT with rear wiper.
1991 LX vert. FOR SALE! 14.8 @92mph @Cordova FFW 98
AOD-T-5 Z swap FOR SALE!
3.73
http://home.comcast.net/~mike82gt/MVC-001F.JPG
http://home.comcast.net/~mike82gt/91pics/100KStang2.jpg

Last edited by mikejb; 03-17-2002 at 05:36 PM.
mikejb is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote Quick reply to this message
Old 03-18-2002, 01:08 PM   #7
Registered User
 
J.Bo's Avatar

Trader Feedback: (12)
 
Join Date: Apr 2000
Location: Raleigh, NC
Posts: 611

Quote:
Check your heater hoses first, i started to replace a HC in an 81 Stang but the heater hose was the prob, and it was
What was the problem with the hoses? I replaced the small hose about 1 month ago.
What can I use to cap off the heater lines until I change the core.
__________________
93 cobra intake ported, Twisted Wedge heads stage II ported & milled .030, TFS Stage 1 cam, Accufab Race TB, Pro-M 77mass meter, FRP 1.6 rr., 255 fuel pump, msd 6a, UD crank pulley, 3:73, BBK 1 5/8 LT'S, Dr. Gas X pipe, Dynomax Ultra Flow cat-back.
J.Bo is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote Quick reply to this message
Old 03-18-2002, 02:06 PM   #8
Registered User
 
Zephyr 351c's Avatar

Trader Feedback: (0)
 
Join Date: Jan 2002
Location: Western NC
Posts: 890

The problem with the heater hos was that the bigger one was was leaking right at the firewall, allowing a little bit of steam to shoot into the heaterbox.

I didnt hack into my heaterbox like mikejb did, i took it out. He forgot one bolt though, not only are there two holding the dash shell on at the kick panels, but one more behind the radio on the drivers side of the dash.
Zephyr 351c is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote Quick reply to this message
Old 03-19-2002, 12:16 PM   #9
Registered User
 
J.Bo's Avatar

Trader Feedback: (12)
 
Join Date: Apr 2000
Location: Raleigh, NC
Posts: 611

Thanks guys for all the help. I put on some bypass caps yesterday until I find time to change out the heater core.

Zephry, I checked my hoses and they are o.k.

I almost forgot, when I drained a little of the coolent yesterday, when pouring it back, in the drain pan were particals of brass most likely from the core gone bad.
__________________
93 cobra intake ported, Twisted Wedge heads stage II ported & milled .030, TFS Stage 1 cam, Accufab Race TB, Pro-M 77mass meter, FRP 1.6 rr., 255 fuel pump, msd 6a, UD crank pulley, 3:73, BBK 1 5/8 LT'S, Dr. Gas X pipe, Dynomax Ultra Flow cat-back.
J.Bo is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Ford Mustang Forums : Corral.net Mustang Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

Posting Rules
You may post new threads
You may 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 -4. The time now is 08:41 AM.



Powered by vBulletin® Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Friendly URLs by vBSEO 3.5.2
© 2010-2011 Corral.net

Garage Plus vBulletin Plugins by Drive Thru Online, Inc.