heat doesnt seem warm enough - JeepForum.com

 
LinkBack Thread Tools
post #1 of 11 Old 12-10-2007, 08:59 AM Thread Starter
RH31379
Registered User
1983 CJ7 
 
Join Date: May 2007
Location: MAHOPAC,NY
Posts: 261
heat doesnt seem warm enough

The heat on my 88 YJ, 4.2, automatic doesnt seem warm enough. The temp gauge is showing 210 +/-. the heat gets warm then seems to cool down. new water pump and t- stat. Heater core??

also... on my 87 YJ 4.2 5 speed
the temperature gauge will work then not work for a few days and work again, the fuel gauge did the same the other day, went out and the temp started working then they both worked again and then the temp stopped and started again. I know the cj's are tied together, are the yj's? or just my luck. any suggestion on what to check?

RH31379 is offline  
Sponsored Links
Advertisement
 
post #2 of 11 Old 12-10-2007, 09:47 AM
NewhampshireYJ
Registered User
1993 YJ Wrangler 
 
Join Date: Sep 2007
Location: NH
Posts: 454
Is your heat turning all the way to WARM? Your cables could be stuck causing the heater door to not fully open. This happened on my jeep and i just followed the cable and used my hand to push the door fully open and after that my heat has been HOTTTTTTTTTTT.
NewhampshireYJ is offline  
post #3 of 11 Old 12-10-2007, 10:26 AM Thread Starter
RH31379
Registered User
1983 CJ7 
 
Join Date: May 2007
Location: MAHOPAC,NY
Posts: 261
it's just the one pivot? i believe it is going all the way.
RH31379 is offline  
post #4 of 11 Old 12-10-2007, 10:34 AM
jaw41272
Registered User
 
jaw41272's Avatar
1991 YJ Wrangler 
 
Join Date: Feb 2007
Location: Glendale, NY
Posts: 643
My heat will melt the soles of your shoes, sounds like your heater control cables aren't woking properly like newhamp said

91 Sahara 4.0l Operation Welcome Home Parade Veh #69
PARADE JEEP MEMBER #1Auto posi-lok equipped, 4" susp. lift
K&N Drop in and loaded with battle scars
www.americaisfull.com
FOR SALE 2005 PT CRUISER CONVERTIBLE
2005 Suzuki DRZ400S For SALE
jaw41272 is offline  
post #5 of 11 Old 12-10-2007, 12:47 PM
NewhampshireYJ
Registered User
1993 YJ Wrangler 
 
Join Date: Sep 2007
Location: NH
Posts: 454
Quote:
Originally Posted by RH31379
it's just the one pivot? i believe it is going all the way.
Its the one pivot but you need to make sure its pushed all the way to the driver side. So the little bar that sticks out should be down the bottom. I thought mine stopped but i figure it out after i pushed hard enough it could toward driver seat and that made my heat hotter.
NewhampshireYJ is offline  
post #6 of 11 Old 12-10-2007, 01:05 PM Thread Starter
RH31379
Registered User
1983 CJ7 
 
Join Date: May 2007
Location: MAHOPAC,NY
Posts: 261
I'll check it out, what would be the symptoms of a bad heater core?
RH31379 is offline  
post #7 of 11 Old 12-10-2007, 02:40 PM
NewhampshireYJ
Registered User
1993 YJ Wrangler 
 
Join Date: Sep 2007
Location: NH
Posts: 454
Quote:
Originally Posted by RH31379
I'll check it out, what would be the symptoms of a bad heater core?
The heater core is made up of small piping that has numerous bends. Clogging of the piping may occur if the coolant system is not flushed or if the coolant is not changed regularly. If clogging occurs the heater core will not work properly. If coolant flow is restricted, heating capacity will be reduced or even lost altogether if the heater core becomes blocked. Control valves may also clog or get stuck.

Also check to see if theres pressure in the hoses to make sure the t stat is working properly.
NewhampshireYJ is offline  
post #8 of 11 Old 12-10-2007, 02:46 PM
will_982
Registered User
1994 YJ Wrangler 
 
Join Date: Oct 2007
Location: Earth
Posts: 241
I'd check the coolant level also, if it's low it never makes it to the heater core.
will_982 is offline  
post #9 of 11 Old 10-22-2009, 09:20 PM
roadhog481
Registered User
 
Join Date: Oct 2009
Location: Florida
Posts: 5
Iknow this is a really old post but i just did this procedure and it worked very well.
My symptoms were heater not blowing very hot, and when i did turn the heat up it would blow warm for a second and then cool down really fast. I replaced the thermostat and flushed the cooling system that had been running rusty water for years(not me, previous owner). filled it with a 60/40 mix and Still no joy on the heater.
so i disconnected both heater hoses, snipped off about 2 inches and squeezed the end of the heater hose into the garden hose.
turn on the water slowly and you should get rust and crap coming out of the other hose. then reverse the flow. back and forth until full flow is observed at the other hose. I had it run gloppy rusty crap run for a couple seconds.

note: watch the pressure from the garden hose it might be too high for the core and blow a hole in it.(then again im not an expert)

finally, hook all hoses back up and enjoy the hair cinging hotness.

hope this helps

Daryl
roadhog481 is offline  
post #10 of 11 Old 10-22-2009, 10:22 PM
timatoe
Registered User
 
timatoe's Avatar
1990 YJ Wrangler 
 
Join Date: Aug 2006
Location: Grass Valley California
Posts: 14,835
Take a look through here.... http://www.jeepforum.com/forum/f12/b...oundup-503604/

Quote:
Originally Posted by George Orwell
We sleep safe in our beds because rough men stand ready in the night to visit violence on those who would do us harm.
timatoe is offline  
post #11 of 11 Old 10-23-2009, 05:56 AM
Que89YJ
Web Wheeler
1989 YJ Wrangler 
 
Join Date: Apr 2008
Location: Detroit
Posts: 21,478
Heat in Florida??? What for???? LOL
Que89YJ is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com 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 e-mail address for yourself.



Email Address:
OR

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.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
Heat Doesnt Work!! IH8ROADZ TJ Wrangler Technical Forum 5 01-19-2009 12:41 AM
My heat a/c fan doesnt work right HELP?!?!??? Divebum TJ Wrangler Technical Forum 6 12-24-2008 09:26 PM
My heat doesnt blow hot air??? Divebum TJ Wrangler Technical Forum 8 12-16-2008 05:55 PM
Heat doesnt work shockwavetj01 TJ Wrangler Technical Forum 2 10-16-2008 09:01 AM
AC/HEAT doesnt work in 3rd setting. RedWrangler99 TJ Wrangler Technical Forum 2 05-06-2006 09:50 AM

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 Off
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome