1995 YJ Heating/Overheating spike - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > YJ Jeep Wrangler Forum > YJ Tech Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 02-03-2011, 07:08 PM   #1
Jeeper
 
Join Date: Dec 2010
Posts: 23
1995 YJ Heating/Overheating spike

Hey guys I have a 4 cylinder 1995 Jeep Wrangler. I am in Kansas and it is -8 degrees with the wind chill. Tonight I got off work, let my Jeep warm up and I headed home. My temperature was at 210 and everything was normal. Then the next thing I know my heater which was on max heat and on high started blowing out "FREEZING" cold air! I looked down and my temperature was shooting up like a rocket! It was about red lining when I pulled over and let her idle. After a few seconds of idle the heat kicked back on and the temperature went down. I have been doing some research and some people said that it could just be that I am lacking some antifreeze. Any help would be amazing! I just want to see what you all think. Thanks so much!

Ashzeigler is offline   Quote Quick Reply
Old 02-03-2011, 07:15 PM   #2
Jeeper
 
Chris Anderson's Avatar
 
Join Date: Dec 2010
Location: Ogden, Ut
Posts: 74
Could be the antifreeze but most likely your thermostat is sticking.

Chris Anderson is offline   Quote Quick Reply
Old 02-03-2011, 07:44 PM   #3
Jeeper
 
Join Date: Dec 2010
Posts: 23
Thanks Chris, I will replace the thermostat and put all new antifreeze in tomorrow!
Ashzeigler is offline   Quote Quick Reply
Old 02-03-2011, 07:52 PM   #4
Jeeper
 
89JEEPYJ's Avatar
 
Join Date: Oct 2010
Posts: 967
lol just check your overflow valve and c if its good or not. hmm its wierd that ur heat went cold. if i member correctly the heater gets its heat from the antifreeze through that hose that goes through the firewall, Its possible that u had cheap antifreeze or some water in there witch froze and clogged it for a second or caused an air pocket. COuld be wrong not sure
89JEEPYJ is offline   Quote Quick Reply
Old 02-04-2011, 11:12 PM   #5
Jeeper
 
Join Date: Dec 2010
Posts: 23
Ok guys so I replaced the thermostat today and I took her out on a test drive. It was weird because it did the EXACT same thing. All of a sudden the heat stops and it goes ICE cold! Then at the exact same time my temperature goes nuclear (The temp was red lining!)! They seem to go hand in hand. I let it cool down and took it back home. During the drive back it again went ICE cold through the vents when I had the heat on high and at the exact same time, my thermostat showed my jeep going nuclear! When I got back home I let it idle and it seemed to be doing ok. I revved it and put her at 2000+ RPM's for 3 minutes straight and the heat did not go away and the Jeep did not go nuclear. Any ideas on what the problem is? I changed the thermostat and the radiator does not have any leaks in it at all. Could this be a water pump issue? It seems that whatever is causing the problem works for a bit and then craps out. My only idea is the water pump, so any other help would be amazing! I am in college and if I do not get this girl back on the road by monday I am screwed. Any help would be amazing. Thanks so much guys!!
Ashzeigler is offline   Quote Quick Reply
Old 02-05-2011, 12:01 AM   #6
Jeeper

WF Supporting Member
 
Tang87's Avatar
 
Join Date: Dec 2010
Location: Illinois
Posts: 7,058
I had a problem with my heat going out in my jeep after I did a water pump thermostat and radiator it worked good. Did you put a new radiator in? What size engine? I have the 4.2 and the waterpump isn't hard at all and im not a great mechanic lol. Make sure water isn't getting in your oil though then there is trouble, and check coolant level too.
__________________
'87 Jeep YJ
Tang87 is offline   Quote Quick Reply
Old 02-05-2011, 12:11 AM   #7
Jeeper
 
Join Date: Dec 2010
Posts: 23
Its a 1995 Jeep wrangler. 4 Cylinder 2.5 Liter. It has just under 130,000 miles. :/
Ashzeigler is offline   Quote Quick Reply
Old 02-05-2011, 12:16 AM   #8
Jeeper

WF Supporting Member
 
Tang87's Avatar
 
Join Date: Dec 2010
Location: Illinois
Posts: 7,058
Hm I have an 87 4.2 so not sure how different it is for your jeep. Mine is carbureted lol but waterpump should be easy. When it idles does it have a gravel sound to it?
__________________
'87 Jeep YJ
Tang87 is offline   Quote Quick Reply
Old 02-05-2011, 12:20 AM   #9
Jeeper
 
ropanach's Avatar
 
Join Date: Dec 2010
Location: Hoodsport
Posts: 233
check your radiator hoses, the one at the bottom has a spring in it so it will not calaps(speeling) if that spring has ruted to the point that it will not hold the hose open, the hose will flatton from the suction of the water pump, had this once.
hope this helps.
ropanach is offline   Quote Quick Reply
Old 02-05-2011, 01:59 AM   #10
Jeeper
 
duaneduanet's Avatar
 
Join Date: May 2009
Location: Greenville,SC
Posts: 349
If your not loosing any fluids and the hoses aren't clogged, it would have to be the water pump. Have you ever done a radiator flush?
__________________
1997 Jeep Wrangler 4.0 5 speed
duaneduanet is offline   Quote Quick Reply
Old 02-05-2011, 11:53 AM   #11
Jeeper
 
Join Date: Dec 2010
Posts: 23
No I have never done a radiator flush before. I really hope it is not the radiator tho. I will check all the hoses, especially the upper and lower radiator hoses today. If they are in good shape then I will replace the water pump. I guess if it still acts up and over heats then the only explanation is that the radiator is giving out... Thanks a lot guys and if you have any other ideas please let me know!
Ashzeigler is offline   Quote Quick Reply
Old 02-05-2011, 11:54 AM   #12
Jeeper
 
Join Date: Dec 2010
Posts: 23
Oh and Tang I do not think it has a gravel sound to it while idling. It sounds fairly normal!
Ashzeigler is offline   Quote Quick Reply
Old 02-05-2011, 04:09 PM   #13
Jeeper
 
ironmike08's Avatar
 
Join Date: Oct 2010
Location: Dearborn,MI
Posts: 64
I had the same thing happen to me 2 weeks ago,I'm in michigan and its cold as hell here . Checked my anti-freeze and sure enough it was low.Topped it off and has been fine ever since.
ironmike08 is offline   Quote Quick Reply
Old 02-06-2011, 01:55 AM   #14
Jeeper
 
Join Date: Dec 2010
Posts: 23
Well I replaced the thermostat and the water pump. Then I "Burped" the radiator. Everything seems to be ok now! I took her out for a test drive and the temperature in the engine was within 175-210 degrees the whole time. It seems to fluctuate a lot now though. It used to stay at 210 degrees the whole time, but now since I have put the new parts in it goes up and down a lot. The GOOD thing is that it does not go over 210 degrees and I have heat. Any idea why it is not constantly at 210 degrees now? Not that I mind because when it goes under 210 it obviously means that my jeep is cooling itself down very effectively. Any ideas would be great. Thanks again guys, all your input is greatly appreciated!
Ashzeigler is offline   Quote Quick Reply
Old 02-06-2011, 01:58 AM   #15
Jeeper
 
Join Date: Dec 2010
Posts: 23
Oh an I also drained all the old antifreeze and put in all new 50/50 today as well! I have pretty much done everything that I know except replace the radiator and its hoses. Lol, I hope that she does ok tomorrow when I drive her!
Ashzeigler is offline   Quote Quick Reply
Old 02-06-2011, 03:31 AM   #16
Deaky

WF Supporting Member
 
Fweaky's Avatar
 
Join Date: Aug 2009
Location: Central Virginia
Posts: 2,202
Images: 18
Its probably circulating a little better with the new pump and proper level. The better it circulates and the colder it is outside the faster it will drop when the thermostat opens which is likely the reason it is dropping lower than before.

__________________
Nothing is foolproof to a sufficiently talented fool.
Fweaky is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler 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:
If you do not want to register, fill this field only and the name will be used as user name for your post.
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

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 Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
IL: 1995 Rio Grande MANGO under 90k AUTO Trans Phrankoff Classifieds Archive 5 12-07-2010 04:12 PM
Just bought another 1995 YJ Tarby YJ General Discussion Forum 5 11-07-2010 08:45 AM
Yj 1995 perrydoctor WF New Member Check In 7 10-31-2010 06:21 AM
1995 Wrangler dbdyj YJ Tech Forum 0 10-26-2010 06:54 PM
How to fix the Amp guage spike and Check Gauges light Bobthegod TJ Tech Forum 0 05-18-2010 06:45 PM


logo carid shop wrangler parts carid fender flares custom wheels store avs deflectors at carid

» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 12:51 PM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC