Over heating Jeep YJ 2.5L - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Wrangler Forums > YJ Wrangler Technical Forum > Over heating Jeep YJ 2.5L

End of Summer Sale, 20% OFF!2007 - 2011 Jeep JK Long Arm Lift KitsIntroducing MONSTALINER™ UV Permanent DIY Roll On Bed Line

Reply
Unread 05-22-2005, 02:23 PM   #1
cody11ca
Registered User
1993 YJ Wrangler 
 
Join Date: May 2004
Location: Sacramento, CA
Posts: 566
Over heating Jeep YJ 2.5L

I have a 93 yj 2.5L. It has a 4 inch lift, 30 inch tires(i know i need bigger ones) and thats about it. Recently the jeep has been getting hot when i go on the freeway and go around 60mph for 15 mins. If i go 55mph i can go forever. I got the notice in the mail to get the jeep smoged for registration. I had to get a new catalytic converter to get this done. Since getting the catalytic converter, my jeep has been overheating when ever i go down the road, whether it is 40mph or 55, it doesnt matter. I have checked the radiator and it has antifreeze and enough water, what else could be the problem? I am in the dark at the moment. THanks.

cody11ca is offline   Reply With Quote
Unread 05-22-2005, 02:37 PM   #2
MugZy_YJ_94
ka-mai
 
MugZy_YJ_94's Avatar
2004 KJ Liberty 
 
Join Date: Mar 2002
Location: Flanders
Posts: 709
could be many things, but all can be brought back to 2 sources: either your cooling system is not working like it should, or you engine is producing to mutch heat. i would start by checking if the fins of the radiator aren't covered with mutt, check the fan (the visco might be shot) and the thermostat is also a good starting point.
__________________
mmmmmm, duvel

Now in the soccer mum class. Missing the YJ, but the KJ isn't bad...for now.
black jeepclub #35
MugZy_YJ_94 is offline   Reply With Quote
Unread 05-22-2005, 04:22 PM   #3
xeon
Registered User
 
Join Date: Sep 2004
Location: Las Vegas, NV
Posts: 722
Thermostat is the best place to start. Make sure you are getting flow to the radiator too. Put your hand on the hoses after driving it for alittle bit. If they are warm you have flow if not you have a thermostat issue. I replaced mine because my engine was not getting hot (open). Replaced it now it gets to 190 and chills there most the time. I wheeled my 4 banger yesterday and ideled for probally 4 hours and not moving never got above 190. The guy with a Chevy 350 adn a 18" high flow fan overheated all day...
__________________
88YJ, 350TBI, 700R4, Atlas 4.3, HP60, 14B (At a mall near you)
Tri-State (NJ-NY-PA) 4x4 Wheeling Group
xeon is offline   Reply With Quote
Unread 05-22-2005, 05:15 PM   #4
mrgeoff
Registered User
 
Join Date: Jan 2005
Location: Fresno area
Posts: 105
a good chance you need to rod out the radiator, its starting to get hot here in cali.
__________________
93, 4 bangin, gutless yj that is ready to crawl this summer.
mrgeoff is offline   Reply With Quote
Unread 05-23-2005, 04:23 AM   #5
JeeperDon
Patience, Grasshopper
 
JeeperDon's Avatar
1993 YJ Wrangler 
 
Join Date: Jan 2005
Location: Albuquerque, NM
Posts: 6,500
The stock 2.5 rad is a single core. Most all of the replacement rads for a YJ are two core, and are reasonably priced. I swapped mine for a two core (I had a 2.5 for 8 yrs) and never had probs afterword.
__________________
'93 YJ, '02 GM 4.3 Vortec V6, SOA, dual ARB's, 8.8+D30(w/WarnHubs), 4.88 gears, 35" BFG KM2's, AX15, 15x7 wheels, NP231+4:1+SYE+2LO, York OBA, Warn M8000, no top or doors Apr-Oct.
Member and Web guy: New Mexico 4 Wheelers My Truck Page on NM4W Site
JeeperDon is offline   Reply With Quote
Reply
Thread Tools


Suggested Threads





Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.